Ligand Pharmaceuticals Incorporated

PROSPECTUS FILED PURSUANT TO RULE 424(B)(3)

LIGAND PHARMACEUTICALS INCORPORATED

Filed Pursuant to Rule 424(b)(3)
Registration No. 333-131029

Prospectus Supplement No. 13
(to Prospectus dated April 12, 2006, as supplemented and amended by that Prospectus Supplement No.
1 dated May 15, 2006, that Prospectus Supplement No. 2 dated June 12, 2006, that Prospectus
Supplement No. 3 dated June 29, 2006, that Prospectus Supplement No. 4 dated August 4, 2006, that
Prospectus Supplement No. 5 dated August 9, 2006, that Prospectus Supplement No. 6 dated August 30,
2006, that Prospectus Supplement No. 7 dated September 11, 2006, that Prospectus Supplement No. 8
dated September 12, 2006, that Prospectus Supplement No. 9 dated October 2, 2006, that Prospectus
Supplement No. 10 dated October 17, 2006, that Prospectus Supplement No. 11 dated October 20, 2006,
and that Prospectus Supplement No. 12 dated October 31, 2006)

This Prospectus Supplement No. 13 supplements and amends the prospectus dated April 12, 2006 (as supplemented and amended by that Prospectus Supplement No. 1 dated May 15, 2006, that Prospectus Supplement No. 2 dated June 12, 2006, that Prospectus Supplement No. 3 dated June 29, 2006, that Prospectus Supplement No. 4 dated August 4, 2006, that Prospectus Supplement No. 5 dated August 9, 2006, that Prospectus Supplement No. 6 dated August 30, 2006, that Prospectus Supplement No. 7 dated September 11, 2006, that Prospectus Supplement No. 8 dated September 12, 2006, that Prospectus Supplement No. 9 dated October 2, 2006, that Prospectus Supplement No. 10 dated October 17, 2006, that Prospectus Supplement No. 11 dated October 20, 2006, and that Prospectus Supplement No. 12 dated October 31, 2006), or the Prospectus, relating to the offer and sale of up to 7,790,974 shares of our common stock to be issued pursuant to awards granted or to be granted under our 2002 Stock Incentive Plan, or our 2002 Plan, up to 147,510 shares of our common stock to be issued pursuant to our 2002 Employee Stock Purchase Plan, or our 2002 ESPP, and up to 50,309 shares of our common stock which may be offered from time to time by the selling stockholders identified on page 110 of the Prospectus for their own accounts. Each of the selling stockholders named in the Prospectus acquired the shares of common stock upon exercise of options previously granted to them as an employee, director or consultant of Ligand or as restricted stock granted to them as a director of Ligand, in each case under the terms of our 2002 Plan. We will not receive any of the proceeds from the sale of the shares of our common stock by the selling stockholders under the Prospectus. We will receive proceeds in connection with option exercises under the 2002 Plan and shares issued under the 2002 ESPP which will be based upon each granted option exercise price or purchase price, as applicable.

On November 14, 2006, we filed with the Securities and Exchange Commission our Quarterly Report on Form 10-Q for the quarter ended September 30, 2006. The information set forth below supplements and amends the information contained in the Prospectus.

This Prospectus Supplement No. 13 should be read in conjunction with, and delivered with, the Prospectus and is qualified by reference to the Prospectus except to the extent that the information in this Prospectus Supplement No. 13 updates or supersedes the information contained in the Prospectus.

Our common stock is quoted on The Nasdaq Global Market under the symbol “LGND.” On November 13, 2006, the closing price of our common stock was $11.18 per share.

Investing in our common stock involves risk. See “Risk Factors” beginning on page 7 of the Prospectus and beginning on page 62 of this Prospectus Supplement No. 13.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if the Prospectus or this Prospectus Supplement No. 13 is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this Prospectus Supplement No. 13 is November 14, 2006.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

Mark One


þ		Quarterly Report Pursuant to Section 13 or 15 (d) of the Securities Exchange Act of 1934

For the quarterly period ended September 30, 2006 or


o		Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the Transition Period From to .

Commission File Number: 0-20720

LIGAND PHARMACEUTICALS INCORPORATED

(Exact Name of Registrant as Specified in its Charter)


Delaware (State or Other Jurisdiction of		77-0160744 (I.R.S. Employer
Incorporation or Organization)		Identification No.)

10275 Science Center Drive		92121-1117
San Diego, CA		(Zip Code)
(Address of Principal Executive Offices)

Registrant’s Telephone Number, Including Area Code: (858) 550-7500

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes þ No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, or a non-accelerated filer.

Large Accelerated Filer o Accelerated Filer þ Non-Accelerated Filer o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes o No þ

As of October 31, 2006, the registrant had 79,229,629 shares of common stock outstanding.

PART 1. FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

LIGAND PHARMACEUTICALS INCORPORATED

CONDENSED CONSOLIDATED BALANCE SHEETS

(Unaudited)

(in thousands, except share data)


	September 30,			December 31,
	2006			2005
ASSETS

Current assets:
Cash and cash equivalents	$	10,029		$	66,756
Short-term investments		21,862			20,174
Accounts receivable, net		7,077			20,954
Current portion of inventories, net		5,039			9,333
Other current assets		12,465			15,750
Current portion of assets held for sale		8,055			—

Total current assets		64,527			132,967
Restricted investments		1,826			1,826
Long-term portion of inventories, net		—			5,869
Property and equipment, net		21,453			22,483
Acquired technology and product rights, net		84,990			146,770
Long-term portion of assets held for sale		57,807			—
Other assets		1,264			4,704

Total assets	$	231,867		$	314,619


LIABILITIES AND STOCKHOLDERS’ DEFICIT

Current liabilities:
Accounts payable	$	16,080		$	15,360
Accrued liabilities		52,902			59,587
Current portion of deferred revenue, net		80,395			157,519
Current portion of co-promote termination liability		47,722			—
Current portion of equipment financing obligations		2,150			2,401
Current portion of long-term debt		363			344
Current portion of liabilities related to assets held for sale		26,803			—

Total current liabilities		226,415			235,211
Long-term debt		139,371			166,745
Long-term portion of co-promote termination liability		95,258			—
Long-term portion of equipment financing obligations		2,699			3,430
Long-term portion of deferred revenue, net		2,546			4,202
Long-term portion of liabilities related to assets held for sale		2,017			—
Other long-term liabilities		2,406			3,105

Total liabilities		470,712			412,693

Commitments and contingencies
Common stock subject to conditional redemption; 997,568 shares issued and outstanding at September 30, 2006 and December 31, 2005		12,345			12,345

Stockholders’ deficit:
Convertible preferred stock, $0.001 par value; 5,000,000 shares authorized; none issued		—			—
Common stock, $0.001 par value; 200,000,000 shares authorized; 77,789,924 and 73,136,340 shares issued at September 30, 2006 and December 31, 2005, respectively		78			73
Additional paid-in capital		753,947			720,988
Accumulated other comprehensive (loss) income		(138	)		490
Accumulated deficit		(1,004,166	)		(831,059	)

		(250,279	)		(109,508	)
Treasury stock, at cost; 73,842 shares		(911	)		(911	)

Total stockholders’ deficit		(251,190	)		(110,419	)

	$	231,867		$	314,619

See accompanying notes.

LIGAND PHARMACEUTICALS INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(Unaudited)

(in thousands, except share data)


	Three Months						Nine Months
	Ended September 30,						Ended September 30,
	2006			2005			2006			2005
Revenues:
Product sales	$	36,707		$	29,908		$	102,853		$	79,367
Collaborative research and development and other revenues		—			2,095			3,977			7,944

Total revenues		36,707			32,003			106,830			87,311

Operating costs and expenses:
Cost of products sold		5,800			6,422			16,768			17,987
Research and development		10,468			7,920			29,013			23,787
Selling, general and administrative		20,085			14,484			58,077			43,133
Co-promotion		11,776			7,766			33,656			22,472
Co-promote termination charges		3,643			—			142,980			—

Total operating costs and expenses		51,772			36,592			280,494			107,379

Loss from operations		(15,065	)		(4,589	)		(173,664	)		(20,068	)

Other income (expense):
Interest income		577			483			1,737			1,325
Interest expense		(2,547	)		(3,118	)		(7,920	)		(9,247	)
Other, net		66			(60	)		1,068			173

Total other expense, net		(1,904	)		(2,695	)		(5,115	)		(7,749	)

Loss before income taxes		(16,969	)		(7,284	)		(178,779	)		(27,817	)
Income tax benefit		828			—			2,290			—

Loss from continuing operations		(16,141	)		(7,284	)		(176,489	)		(27,817	)
Income (loss) from discontinued operations, net of income tax		1,223			1,003			3,382			(5,860	)

Net loss	$	(14,918	)	$	(6,281	)	$	(173,107	)	$	(33,677	)


Basic and diluted per share amounts:
Loss from continuing operations	$	(0.21	)	$	(0.10	)	$	(2.26	)	$	(0.38	)
Income (loss) from discontinued operations		0.02			0.02			0.05			(0.08	)

Net loss	$	(0.19	)	$	(0.08	)	$	(2.21	)	$	(0.46	)

Weighted average number of common shares		78,670,137			74,041,204			78,239,868			73,998,594

See accompanying notes.

LIGAND PHARMACEUTICALS INCORPORATED

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Unaudited)

(in thousands)


	Nine Months Ended September 30,
	2006			2005
Operating activities
Net loss	$	(173,107	)	$	(33,677	)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of acquired technology and license rights		10,248			10,376
Depreciation and amortization of property and equipment		2,576			2,779
Amortization of debt issue costs		705			775
Gain on sale of Exelixis stock		(953	)		(171	)
Stock-based compensation		3,981			—
Non-cash interest expense		60			—
Other		(16	)		79
Changes in operating assets and liabilities:
Accounts receivable, net		13,877			6,469
Inventories, net		(514	)		(3,103	)
Other current assets		1,976			5,041
Accounts payable and accrued liabilities		(5,753	)		2,286
Other liabilities		(14	)		(24	)
Deferred revenue, net		(50,498	)		5,463
Co-promote termination liability		142,980			—

Net cash used in operating activities		(54,452	)		(3,707	)


Investing activities
Purchases of short-term investments		(18,324	)		(28,253	)
Proceeds from sale of short-term investments		16,963			24,748
Increase in restricted investments		¾			(170	)
Purchases of property and equipment		(1,592	)		(1,770	)
Payment to buy-down ONTAK royalty obligation		¾			(33,000	)
Capitalized portion of payment of lasofoxifene royalty rights		¾			(558	)
Other, net		72			165

Net cash used in investing activities		(2,881	)		(38,838	)


Financing activities
Principal payments on equipment financing obligations		(2,012	)		(2,147	)
Proceeds from equipment financing arrangements		1,030			1,390
Repayment of long-term debt		(255	)		(238	)
Proceeds from issuance of common stock		1,981			912
Decrease in other long-term liabilities		(138	)		(94	)

Net cash provided by (used in) financing activities		606			(177	)

Net decrease in cash and cash equivalents		(56,727	)		(42,722	)
Cash and cash equivalents at beginning of period		66,756			92,310

Cash and cash equivalents at end of period	$	10,029		$	49,588


Supplemental disclosure of cash flow information
Interest paid	$	5,283		$	5,569


Non-cash impact of the conversion of 6% convertible subordinated notes into common stock:
Conversion of principal amount of convertible notes	$	27,100		$	—
Conversion of unamortized debt issue costs		(362	)		—
Conversion of unpaid accrued interest		264			—

	$	27,002		$	—

See accompanying notes.

LIGAND PHARMACEUTICALS INCORPORATED

Notes to Condensed Consolidated Financial Statements

(Unaudited)

1. Basis of Presentation

The accompanying condensed consolidated financial statements of Ligand Pharmaceuticals Incorporated (the “Company” or “Ligand”) were prepared in accordance with instructions for Form 10-Q and, therefore, do not include all information necessary for a complete presentation of financial condition, results of operations, and cash flows in conformity with accounting principles generally accepted in the United States of America. However, all adjustments, consisting of normal recurring adjustments, which, in the opinion of management, are necessary for a fair presentation of the condensed consolidated financial statements, have been included. The results of operations for the three and nine month periods ended September 30, 2006 and 2005 are not necessarily indicative of the results that may be expected for the entire fiscal year or any other future period.

As further discussed in Note 2, the Company sold its oncology products (“Oncology”) effective October 25, 2006. The operating results for Oncology for all periods presented have been presented in the accompanying condensed consolidated financial statements as “Discontinued Operations”. Likewise, assets and liabilities associated with Oncology are presented as “Assets held for sale” and “Liabilities related to assets held for sale” as of September 30, 2006. Additionally, as discussed in Note 13, on September 7, 2006 the Company announced plans to sell its AVINZA product line, subject to shareholder approval. Due to the uncertainty surrounding shareholder approval, the operating results for the AVINZA product line do not qualify for discontinued operations (held for sale) presentation and therefore are presented in the accompanying condensed consolidated financial statements as continuing operations. Furthermore, the Company, along with its wholly-owned subsidiary Nexus Equity VI, LLC (“Nexus”) entered into an agreement with Slough Estates USA, Inc. (“Slough”) for the sale of the Company’s real property located in San Diego, California. The transaction closed in November 2006 and includes an agreement between the Company and Slough for the Company to leaseback the building for a period of 15 years. In connection with the sale transaction, on November 6, 2006, the Company paid off the existing mortgage on the building of approximately $11.6 million.

These statements should be read in conjunction with the consolidated financial statements and related notes, which are included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2005.

Principles of Consolidation

The condensed consolidated financial statements include the Company’s wholly owned subsidiaries, Ligand Pharmaceuticals International, Inc., Ligand Pharmaceuticals (Canada) Incorporated, Seragen, Inc. (“Seragen”) and Nexus Equity VI LLC (“Nexus”). Intercompany accounts and transactions have been eliminated in consolidation.

Use of Estimates

The preparation of consolidated financial statements in conformity with generally accepted accounting principles requires the use of estimates and assumptions that affect the reported amounts of assets and liabilities, including disclosure of contingent assets and contingent liabilities, at the date of the consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. The Company’s critical accounting policies are those that are most important to both the Company’s financial condition and results of operations and require the most difficult, subjective or complex judgments on the part of management in their application, often as a result of the need to make estimates about the effect of matters that are inherently uncertain. Because of the uncertainty of factors surrounding the estimates or judgments used in the preparation of the consolidated financial statements, actual results may materially vary from these estimates.

Income (Loss) Per Share

Net loss per share is computed using the weighted average number of common shares outstanding. Basic and diluted income (loss) per share amounts are equivalent for the periods presented as the inclusion of potential common shares in the number of shares used for the diluted computation would be anti-dilutive to loss per share from continuing operations. In accordance with SFAS No. 128, Earnings Per Share, no potential common shares

are included in the computation of any diluted per share amounts, including income (loss) per share from discontinued operations, as the Company reported a net loss from continuing operations for all periods presented. Potential common shares, the shares that would be issued upon the conversion of convertible notes and the exercise of outstanding warrants and stock options, were 28.6 million and 32.6 million at September 30, 2006 and 2005, respectively. As of October 6, 2006, all outstanding warrants to purchase 748,800 shares of the Company’s common stock expired.

Guarantees and Indemnifications

The Company accounts for and discloses guarantees in accordance with Financial Accounting Standards Board (“FASB”) Interpretation No. 45 (“FIN 45”), Guarantor’s Accounting and Disclosure Requirements for Guarantees Including Indirect Guarantees of Indebtedness of Others, an interpretation of FASB Statements No. 5, 57 and 107 and rescission of FIN 34. The following is a summary of the Company’s agreements that the Company has determined are within the scope of FIN 45:

Under its bylaws, the Company has agreed to indemnify its officers and directors for certain events or occurrences arising as a result of the officer’s or director’s serving in such capacity. The term of the indemnification period is for the officer’s or director’s lifetime. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited. However, the Company has a directors and officers liability insurance policy that limits its exposure and enables it to recover a portion of any future amounts paid. As a result of its insurance policy coverage, the Company believes the estimated fair value of these indemnification agreements is minimal and has no liabilities recorded for these agreements as of September 30, 2006 and December 31, 2005.

The Company enters into indemnification provisions under its agreements with other companies in its ordinary course of business, typically with business partners, contractors, customers and landlords. Under these provisions the Company generally indemnifies and holds harmless the indemnified party for direct losses suffered or incurred by the indemnified party as a result of the Company’s activities or, in some cases, as a result of the indemnified party’s activities under the agreement. The maximum potential amount of future payments the Company could be required to make under these indemnification provisions is unlimited. The Company has not incurred material costs to defend lawsuits or settle claims related to these indemnification agreements. As a result, the Company believes the estimated fair value of these agreements is minimal. Accordingly, the Company has no liabilities recorded for these agreements as of September 30, 2006 and December 31, 2005.

Accounting for Stock-Based Compensation

Prior to January 1, 2006, the Company accounted for stock-based compensation in accordance with Accounting Principles Board (“APB”) Opinion No. 25, Accounting for Stock Issued to Employees, and related interpretations. The pro forma effects of employee stock options were disclosed as required by Financial Accounting Standard Board Statement (“SFAS”) No. 123, Accounting for Stock-Based Compensation (“SFAS 123”).

Effective January 1, 2006, the Company adopted Statement of Financial Accounting Standards (“SFAS”) 123 (revised 2004), Share-Based Payment (“SFAS 123(R)”), using the modified prospective transition method. No stock-based employee compensation cost was recognized prior to January 1, 2006, as all options granted prior to 2006 had an exercise price equal to the market value of the underlying common stock on the date of the grant. In March 2005, the Securities and Exchange Commission issued Staff Accounting Bulletin No. 107 (“SAB 107”) relating to SFAS 123(R). The Company has applied the provisions of SAB 107 in its adoption of SFAS 123(R). Under the transition method, compensation cost recognized in 2006 includes: (a) compensation cost for all share-based payments granted prior to, but not yet vested as of January 1, 2006, based on the grant date fair value estimated in accordance with the original provisions of SFAS 123, and (b) compensation cost for all share-based payments granted in the nine months ended September 30, 2006, based on grant-date fair value estimated in accordance with the provisions of SFAS 123(R).

Additionally, the Company accounts for the fair value of options granted to non-employee consultants under Emerging Issues Task Force (“EITF”) 96-18, Accounting for Equity Instruments That Are Issued to Other Than Employees for Acquiring, or in Conjunction with Selling, Goods or Services.

Results for the three and nine months ended September 30, 2005 have not been retrospectively adjusted. The fair value of the options was estimated using a Black-Scholes option-pricing formula and amortized to expense over the options’ vesting periods.

The following table illustrates the pro forma effect of share-based compensation on net loss and loss per share for the three and nine months ended September 30, 2005 (in thousands, except per share data):


	Three Months Ended			Nine Months Ended
	September 30, 2005			September 30, 2005
Net loss, as reported	$	(6,281	)	$	(33,677	)

Stock-based employee compensation expense included in reported net loss		—			—
Less: total stock-based compensation expense determined under fair value based method for all awards continuing to vest		(723	)		(2,261	)
Less: total stock-based compensation expense determined under fair value based method for options accelerated in January 2005 (1)		—			(12,455	)

Net loss, pro forma	$	(7,004	)	$	(48,393	)


Basic and diluted per share amounts:
Net loss per share as reported	$	(0.08	)	$	(0.46	)

Net loss per share pro forma	$	(0.09	)	$	(0.65	)


(1)		Represents pro forma unrecognized expense for accelerated options as of the date of acceleration.

The estimated weighted average fair value at grant date for the options granted for the three and nine months ended September 30, 2005 was $7.37 and $7.25, respectively.

On January 31, 2005, Ligand accelerated the vesting of certain unvested and “out-of-the-money” stock options previously awarded to the executive officers and other employees under the Company’s 1992 and 2002 stock option plans which had an exercise price greater than $10.41, the closing price of the Company’s stock on that date. The vesting for options to purchase approximately 1.3 million shares of common stock (of which approximately 450,000 shares were subject to options held by the executive officers) were accelerated. Options held by non-employee directors were not accelerated.

Holders of incentive stock options (“ISOs”) within the meaning of Section 422 of the Internal Revenue Code of 1986, as amended, were given the election to decline the acceleration of their options if such acceleration would have the effect of changing the status of such option for federal income tax purposes from an ISO to a non-qualified stock option. In addition, the executive officers plus other members of senior management agreed that they will not sell any shares acquired through the exercise of an accelerated option prior to the date on which the exercise would have been permitted under the option’s original vesting terms. This agreement does not apply to a) shares sold in order to pay applicable taxes resulting from the exercise of an accelerated option or b) upon the officers’ retirement or other termination of employment.

The purpose of the acceleration was to eliminate any future compensation expense the Company would have otherwise recognized in its statement of operations with respect to these options upon the implementation of SFAS 123(R).

Other Stock-Related Information

The 2002 Stock Incentive Plan contains four separate equity programs – Discretionary Option Grant Program, Automatic Option Grant Program, Stock Issuance Program and Director Fee Option Grant Program (“the 2002 Plan”). On January 31, 2006, shareholders of the Company approved an amendment to the 2002 Plan to increase the number of shares of the Company’s common stock authorized for issuance by 750,000 shares, from 8.3 million shares to 9.1 million shares. As of September 30, 2006, options for 7,058,435 shares of common stock were outstanding under the 2002 plan and 499,535 shares remained available for future option grant or direct issuance.

The Company grants options to employees, non-employee consultants, and non-employee directors. Additionally, the Company granted restricted stock to non-employee directors in the first quarter of 2006. Non-employee directors are accounted for as employees under SFAS 123(R). Options and restricted stock granted to certain directors vest in equal monthly installments over one year. Options granted to employees vests 1/8 on the six month anniversary and 1/48 each month thereafter for forty-two months. Options granted to non-employee consultants generally vest between 24 and 36 months. All option awards generally expire ten years from the date of the grant.

Stock-based compensation cost for awards to employees and non-employee directors is recognized on a straight-line basis over the vesting period until the last tranche vests. Compensation cost for consultant awards is recognized over each separate tranche’s vesting period. The Company recognized compensation expense of approximately $1.9 million and $4.0 million for the three and nine months ended September 30, 2006, respectively, associated with option awards and restricted stock. Of the total compensation expense associated with option awards, approximately $0.1 million and $0.3 million related to options granted to non-employee consultants for the three and nine months ended September 30, 2006, respectively. There was no deferred tax benefit recognized in connection with this cost.

The fair-value for options that were awarded to employees and directors was estimated at the date of grant using the Black-Scholes option valuation model with the following weighted average assumptions:


	Three Months Ended						Nine Months Ended
	September 30						September 30
	2006			2005			2006			2005
Risk-free interest rate		4.8	%		4.2	%		4.8	%		4.2	%
Dividend yield		—			—			—			—
Expected volatility		70	%		73	%		70	%		73	%
Expected term	5.7 years			5 years			5.9 years			5 years

The expected term of the employee and non-employee director options is the estimated weighted-average period until exercise or cancellation of vested options (forfeited unvested options are not considered). SAB 107 guidance permits companies to use a “safe harbor” expected term assumption for grants up to December 31, 2007 based on the mid-point of the period between vesting date and contractual term, averaged on a tranche-by-tranche basis. The Company used the safe harbor in selecting the expected term assumption in 2006. The expected term for consultant awards is the remaining period to contractual expiration.

Volatility is a measure of the expected amount of variability in the stock price over the expected life of an option expressed as a standard deviation. SFAS 123(R) requires an estimate of future volatility. In selecting this assumption, the Company used the historical volatility of the Company’s stock price over a period equal to the expected term.

For options granted to the Company’s former Chief Executive Officer (“CEO”) and for shares purchased under the Company’s employee stock purchase plan (“ESPP”), an expected volatility of 50% was used for the three and nine months ended September 30, 2006. The expected term of the options granted to the former CEO is 5.5 months. The expected term for shares issued under the ESPP is three months.

Stock Option Activity


				Weighted-		Weighted-Average
				Average		Remaining		Aggregate
				Exercise		Contractual Term		Intrinsic Value
	Shares			Price		in Years		(in thousands)
Balance at December 31, 2005		7,001,657		$	11.76
Granted		1,161,518			10.84
Exercised		(233,885	)		7.98
Forfeited		(177,834	)		9.51
Cancelled		(693,021	)		13.09

Balance at September 30, 2006		7,058,435		$	11.66		6.11	$	4,377


Exercisable at September 30, 2006		5,384,044		$	12.20		5.18	$	2,978


Options expected to vest as of September 30, 2006		6,891,572		$	11.70		6.03	$	4,239

The weighted-average grant-date fair value of all stock options granted during the nine months ended September 30, 2006 was $7.15 per share. The total intrinsic value of all options exercised during the nine months ended September 30, 2006 was approximately $0.9 million. As of September 30, 2006, there was approximately $8.3 million of total unrecognized compensation cost related to nonvested stock options. That cost is expected to be recognized over a weighted average period of 2.7 years.

Cash received from options exercised for the nine months ended September 30, 2006 and 2005 was approximately $1.9 million and $0.9 million, respectively. There is no current tax benefit related to options exercised because of net operating losses (“NOLs”) for which a full valuation allowance has been established.

Restricted Stock Activity


				Weighted-Average
	Shares			Stock Price
Balance at December 31, 2005		—		$	—
Granted		15,566			11.56
Vested		(11,677	)		11.56
Forfeited		—			—

Nonvested at September 30, 2006		3,889		$	11.56

As of September 30, 2006, there was $47,000 of total unrecognized compensation cost related to nonvested restricted stock. That cost is expected to be recognized over the remainder of 2006.

Employee Stock Purchase Plan

The Company also has an employee stock purchase plan (the “2002 ESPP”). The 2002 ESPP was originally adopted July 1, 2001 and amended through June 30, 2003 to allow employees to purchase a limited amount of common stock at the end of each three month period at a price equal to the lesser of 85% of fair market value on a) the first trading day of the period, or b) the last trading day of the Lookback period (the “Lookback Provision”). The 15% discount and the Lookback Provision make the 2002 ESPP compensatory under SFAS 123(R). Stock purchases under the 2002 ESPP in the third quarter of 2006 resulted in an expense of $0.03 million. There were no stock purchases under the 2002 ESPP during the six months ended June 30, 2006. Since the adoption of the 2002 ESPP in 2001, a total of 510,248 shares of common stock has been reserved for issuance by Ligand under the 2002 ESPP (includes shares transferred from the predecessor plan). As of September 30, 2006, 376,937 shares of

common stock had been issued under the 2002 ESPP to employees and 133,311 shares are available for future issuance. For the nine months ended September 30, 2006, there were 14,199 shares of common stock issued under the 2002 ESPP.

Accounts Receivable

Accounts receivable consist of the following (in thousands):


	September 30,			December 31,
	2006			2005
Trade accounts receivable	$	6,164		$	1,344
Due from finance company (Note 3)		1,197			20,464
Less: discounts and allowances		(284	)		(854	)

	$	7,077		$	20,954

Inventories

Inventories are stated at the lower of cost or market. Cost is determined using the first-in, first-out method. Inventories consist of the following (in thousands):


	September 30,			December 31,
	2006			2005
Raw materials	$	¾		$	1,508
Work-in-process		1,074			9,115
Finished goods		4,021			6,324
Less: inventory reserves		(56	)		(1,745	)

		5,039			15,202
Less: current portion		(5,039	)		(9,333	)

Long-term portion of inventories, net	$	—		$	5,869

Inventories related to the Oncology product line have been reclassified as assets held for sale as of September 30, 2006 (Refer to Note 2).

Property and Equipment

Property and equipment is stated at cost and consists of the following (in thousands):


	September 30,			December 31,
	2006			2005
Land	$	5,176		$	5,176
Equipment, building, and leasehold improvements		62,526			61,732
Less accumulated depreciation and amortization		(46,249	)		(44,425	)

	$	21,453		$	22,483

Depreciation of equipment and building is computed using the straight-line method over the estimated useful lives of the assets which range from three to thirty years. Leasehold improvements are amortized using the straight-line method over their estimated useful lives or their related lease term, whichever is shorter. Property and equipment related to the Oncology product line have been reclassified as assets held for sale as of September 30, 2006 (Refer to Note 2).

Other Current Assets

Other current assets consist of the following (in thousands):


	September 30,		December 31,
	2006		2005
Deferred royalty cost	$	2,575	$	5,203
Deferred cost of products sold		3,327		5,103
Prepaid insurance		381		1,071
Prepaid other		1,550		2,807
Due from insurance company (Note 6)		4,000		—
Other		632		1,566

	$	12,465	$	15,750

Other current assets related to the Oncology product line have been reclassified as assets held for sale as of September 30, 2006 (Refer to Note 2).

Other Assets

Other assets consist of the following (in thousands):


	September 30,		December 31,
	2006		2005
Prepaid royalty buyout, net	$	—	$	2,312
Debt issue costs, net		1,125		2,193
Other		139		199

	$	1,264	$	4,704

Other assets related to the Oncology product line have been reclassified as assets held for sale as of September 30, 2006 (Refer to Note 2).

Amortization of debt issue costs was $0.2 million and $0.3 million for the three months ended September 30, 2006 and 2005, respectively, and $0.7 and $0.8 million for the nine months ended September 30, 2006 and 2005, respectively. Estimated annual amortization of this asset in both of 2006 and 2007 is approximately $1.0 million. As further discussed under “Long-term Debt”, during the three and six months ended June 30, 2006, convertible notes with a face value of $1.0 million and $27.1 million, respectively, were converted into approximately 0.2 million and 4.4 million shares of common stock. In connection with the conversions, unamortized debt issue costs of $0.01 million and $0.4 million for the three and six months ended June 30, 2006, respectively, were recorded as additional paid-in capital. There were no conversions during the three months ended September 30, 2006.

Acquired Technology and Product Rights, Net

In accordance with SFAS No. 142, Goodwill and Other Intangibles, the Company amortizes intangible assets with finite lives in a manner that reflects the pattern in which the economic benefits of the assets are consumed or otherwise used up. If that pattern cannot be reliably determined, the assets are amortized using the straight-line method.

Acquired technology and product rights, net as of September 30, 2006 represent payments related to the Company’s acquisition of license rights for AVINZA. Because the Company cannot reliably determine the pattern in which the economic benefits of the acquired technology and products rights are realized, acquired technology and product rights are amortized on a straight-line basis over 15 years, which approximated the remaining patent life at the time the asset was acquired and otherwise represents the period estimated to be benefited. Specifically, the AVINZA asset is being amortized through November 2017, the expiration of its U.S. patent.

Acquired technology and product rights, net consist of the following (in thousands):


	September 30,			December 31,
	2006			2005
AVINZA	$	114,437		$	114,437
Less accumulated amortization		(29,447	)		(23,725	)

		84,990			90,712


ONTAK		—			78,312
Less accumulated amortization		—			(22,254	)

		—			56,058

	$	84,990		$	146,770

Amortization of AVINZA acquired technology and product rights was $1.9 million and $5.7 million for the three and nine month periods ended September 30, 2006 and 2005, respectively. Estimated annual amortization for this asset in each of the years in the period from 2006 through 2010 is approximately $7.6 million and a total of $52.6 million, thereafter. Acquired technology and product rights related to ONTAK have been reclassified as assets held for sale as of September 30, 2006 (Refer to Note 2).

Deferred Revenue, Net

Under the sell-through revenue recognition method, the Company does not recognize revenue upon shipment of product to the wholesaler. For these shipments, the Company invoices the wholesaler, records deferred revenue at gross invoice sales price, and classifies the inventory held by the wholesaler (and subsequently held by retail pharmacies for AVINZA) as deferred cost of goods sold within “other current assets.” Deferred revenue is presented net of deferred cash and other discounts. Other deferred revenue reflects certain collaborative research and development payments and the sale of certain royalty rights.

Deferred revenue related to the Oncology product line has been reclassified as liabilities related to assets held for sale as of September 30, 2006 (Refer to Note 2).

The composition of deferred revenue, net is as follows (in thousands):


	September 30,			December 31,
	2006			2005
Deferred product revenue	$	81,436		$	158,030
Other deferred revenue		2,546			5,296
Deferred discounts		(1,041	)		(1,605	)

Deferred revenue, net	$	82,941		$	161,721


Deferred revenue, net:
Current, net	$	80,395		$	157,519
Long term, net		2,546			4,202

	$	82,941		$	161,721


Deferred product revenue, net (1):
Current	$	80,395		$	156,425
Long term		—			—

	$	80,395		$	156,425


Other deferred revenue:
Current	$	—		$	1,094
Long term		2,546			4,202

	$	2,546		$	5,296


(1)		Deferred product revenue, net does not include other gross to net revenue adjustments made when the Company reports net product sales. Such adjustments include Medicaid rebates, managed health care rebates, and government chargebacks, which are included in accrued liabilities in the accompanying condensed consolidated financial statements.

Accrued Liabilities

Accrued liabilities consist of the following (in thousands):


	September 30,		December 31,
	2006		2005
Allowances for loss on returns, rebates, chargebacks, other discounts, ONTAK end-customer and Panretin product returns (1)	$	10,397	$	15,729
Co-promotion		18,443		24,778
Distribution services		2,477		4,044
Employee compensation		8,106		5,746
Securities class action and derivative lawsuit liability (2)		4,150		—
Royalties		1,662		1,994
Seragen purchase liability (2)		¾		2,925
Interest		2,883		1,164
Other		4,784		3,207

	$	52,902	$	59,587


(1)		Liabilities related to ONTAK end-customer and Panretin product returns will be retained by the Company after the close of the sale of the Company’s oncology products (refer to Note 2) and therefore have not been classified as “Liabilities related to assets held for sale.”

(2)		Refer to Note 6, “Litigation”.

The following summarizes the activity in the accrued liability accounts related to allowances for loss on returns, rebates, chargebacks, other discounts, and ONTAK end-customer and Panretin returns (in thousands):


	Losses on						Managed						ONTAK End-
	Returns Due						Care and						customer and
	to Changes			Medicaid			Other						Panretin
	In Price			Rebates			Rebates			Chargebacks			Returns			Total
Nine Months Ended September 30, 2006:
Balance at December 31, 2005	$	4,038		$	5,348		$	3,467		$	200		$	2,676		$	15,729
Provision		2,126			3,645			6,682			5,026			1,812			19,291
Payments		¾			(8,022	)		(6,040	)		(5,028	)		¾			(19,090	)
Charges		(3,350	)		¾			¾			¾			(2,183	)		(5,533	)

Balance at September 30, 2006	$	2,814		$	971		$	4,109		$	198		$	2,305		$	10,397

The accrual for other rebates as of September 30, 2006, reflects the release of a $1.8 million accrual previously recorded for billings received from the Department of Veteran Affairs under the Department of Defense’s TriCare Retail Pharmacy refund program. In September 2006, the U.S. Court of Appeals for the Federal Circuit struck down the TriCare program.

Long-term Debt

Long-term debt consists of the following (in thousands):


	September 30,			December 31,
	2006			2005
6% Convertible Subordinated Notes	$	128,150		$	155,250
Note payable to bank		11,584			11,839

		139,734			167,089
Less current portion		(363	)		(344	)

Long-term debt	$	139,371		$	166,745

During the six months ended June 30, 2006, certain holders of the Company’s outstanding 6% convertible subordinated notes converted notes with face values of $27.1 million into approximately 4.4 million shares of common stock. Accrued interest and unamortized debt issue costs related to the converted notes of $0.3 million and $0.4 million, respectively, were recorded to additional paid-in capital during the six months ended June 30, 2006. There were no conversions during the three months ended September 30, 2006.

On October 30, 2006, the Company gave notice of redemption to the noteholders of its 6% convertible subordinated notes due November 2007. The redemption date of the notes has been set for November 29, 2006. The noteholders may elect to convert the 6% notes, on or before November 29, 2006, into shares of common stock at a conversion rate of 161.9905 shares per $1,000 principal amount of the notes (approximately $6.17 per share). Based on the current price of the Company’s common stock, the majority of the noteholders are expected to convert their notes into shares of the Company’s common stock prior to the redemption date. The $128.2 million of principal amount of the notes outstanding may be converted into approximately 20.8 million shares of common stock. The Company will pay the holders of those notes that are not converted into shares a redemption price equal to 101.2% of the outstanding principal amount plus accrued and unpaid interest.

As discussed more fully in Note 14, on October 25, 2006, the Company, along with its wholly-owned subsidiary Nexus Equity VI, LLC (“Nexus”) entered into an agreement with Slough Estates USA, Inc. (“Slough”) for the sale of the Company’s real property located in San Diego, California. The transaction closed in November 2006 and includes an agreement between the Company and Slough for the Company to leaseback the building for a period of 15 years. In connection with the sale transaction, on November 6, 2006, the Company paid off the existing mortgage on the building of approximately $11.6 million.

Condensed Changes in Stockholders’ Deficit

Condensed changes in stockholders’ deficit for the nine months ended September 30, 2006 are as follows (in thousands, except share data):


							Accumulated
					Additional		other												Total
	Common Stock				paid-in		comprehensive			Accumulated			Treasury Stock						stockholders’
	Shares		Amount		capital		income (loss)			deficit			Shares			Amount			deficit
Balance at December 31, 2005		73,136,340	$	73	$	720,988	$	490		$	(831,059	)		(73,842	)	$	(911	)	$	(110,419	)
Issuance of common stock upon exercise of stock options and restricted stock grants		263,650		1		1,980		—			—			—			—			1,981
Issuance of common stock on conversion of debt		4,389,934		4		26,998		—			—			—			—			27,002
Unrealized losses on available-for-sale securities		—		—		—		(613	)		—			—			—			(613	)
Foreign currency translation adjustments		—		—		—		(15	)		—			—			—			(15	)
Equity- based compensation		—		—		3,981		—			—			—			—			3,981
Net loss		—		—		—		—			(173,107	)		—			—			(173,107	)


Balance at September 30, 2006		77,789,924	$	78	$	753,947	$	(138	)	$	(1,004,166	)		(73,842	)	$	(911	)	$	(251,190	)

Comprehensive Loss

Comprehensive loss represents net loss adjusted for the change during the periods presented in unrealized gains and losses on available-for-sale securities less reclassification adjustments for realized gains or losses included in net loss, as well as foreign currency translation adjustments. The accumulated unrealized gains or losses and cumulative foreign currency translation adjustments are reported as accumulated other comprehensive income (loss) as a separate component of stockholders’ deficit. Comprehensive loss is as follows (in thousands):


	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2006			2005			2006			2005
Net loss as reported	$	(14,918	)	$	(6,281	)	$	(173,107	)	$	(33,677	)
Unrealized (losses) gains on available-for-sale securities		(93	)		108			282			(512	)
Reclassification adjustment for (losses) gains on sale of available-for-sale securities		(75	)		143			(895	)		143
Foreign currency translation adjustments		—			(13	)		(15	)		(42	)

Comprehensive loss	$	(15,086	)	$	(6,043	)	$	(173,735	)	$	(34,088	)

The components of accumulated other comprehensive (loss) income are as follows (in thousands):


	September 30,			December 31,
	2006			2005
Net unrealized holding gain on available-for-sale securities	$	130		$	743
Net unrealized loss on foreign currency translation		(268	)		(253	)

	$	(138	)	$	490

Net Product Sales

The Company’s AVINZA net product sales are determined on a sell-through basis less allowances for rebates, chargebacks, discounts, and losses to be incurred on returns from wholesalers resulting from increases in the selling price of the Company’s products. In addition, the Company incurs certain distributor service agreement fees related to the management of its product by wholesalers. These fees have been recorded within net product sales.

The Company’s total net product sales from continuing operations for the three months ended September 30, 2006 were $36.7 million compared to $29.9 million for the same 2005 period. Total net product sales from continuing operations for the nine months ended September 30, 2006 were $102.9 million compared to $79.4 million for the same 2005 period.

Collaborative Research and Development and Other Revenues

Collaborative research and development and other revenues are recognized as services are performed consistent with the performance requirements of the contract. Non-refundable contract fees for which no further performance obligation exists and where the Company has no continuing involvement are recognized upon the earlier of when payment is received or collection is assured. Revenue from non-refundable contract fees where the Company has continuing involvement through research and development collaborations or other contractual obligations is recognized ratably over the development period or the period for which the Company continues to have a performance obligation. Revenue from performance milestones is recognized upon the achievement of the milestones as specified in the respective agreement. Payments received in advance of performance or delivery are recorded as deferred revenue and subsequently recognized over the period of performance or upon delivery.

The composition of collaborative research and development and other revenues is as follows (in thousands):


	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2006		2005		2006		2005
Collaborative research and development	$	—	$	894	$	1,678	$	2,618
Development milestones and other		—		1,201		2,299		5,326

	$	—	$	2,095	$	3,977	$	7,944

Income Taxes

The Company recognizes liabilities or assets for the deferred tax condensed consolidated consequences of temporary differences between the tax bases of assets or liabilities and their reported amounts in the condensed consolidated financial statements in accordance with SFAS No. 109, Accounting for Income Taxes (“SFAS 109”). These temporary differences will result in taxable or deductible amounts in future years when the reported amounts of the assets or liabilities are recovered or settled. SFAS 109 requires that a valuation allowance be established when management determines that it is more likely than not that all or a portion of a deferred tax asset will not be realized. The Company evaluates the reliability of its net deferred tax assets on a quarterly basis and valuation allowances are provided, as necessary. During this evaluation, the Company reviews its forecasts of income in conjunction with other positive and negative evidence surrounding the reliability of its deferred tax assets to determine if a valuation allowance is required. Adjustments to the valuation allowance will increase or decrease the Company’s income tax provision or benefit. At September 30, 2006 and December 31, 2005, the Company has established a full valuation allowance against net deferred tax assets. In accordance with SFAS 109, income taxes from continuing operations for the three and nine months ended September 30, 2006 reflect a tax benefit equal to the tax expense attributed to the income from discontinued operations. Tax expense on income from discontinued operations was computed using statutory rates.

2. Discontinued Operations

On September 7, 2006, the Company, Eisai Inc., a Delaware corporation and Eisai Co., Ltd., a Japanese company (together with Eisai Inc., “Eisai”), entered into a purchase agreement (the “Oncology Purchase Agreement”) pursuant to which Eisai agreed to acquire all of the Company’s worldwide rights in and to the Company’s oncology products, including, among other things, all related inventory, equipment, records and intellectual property, and assume certain liabilities (the “Oncology Product Line”) as set forth in the Oncology Purchase Agreement. The Oncology Product Line includes the Company’s four marketed oncology drugs: ONTAK, Targretin capsules, Targretin gel and Panretin gel. Pursuant to the Oncology Purchase Agreement, at closing on October 25, 2006, Ligand received approximately $205.0 million in cash and Eisai assumed certain liabilities. As of the closing date, the Company was also required to transfer manufactured product to Eisai of at least $9.8 million. To the extent the actual inventory amount is less than $9.8 million, the Oncology Purchase Agreement provides for a corresponding decrease to the purchase price. The Company believes that oncology inventory on October 25, 2006 exceeded $9.8 million. Until Eisai agrees with the determination of the amount transferred, however, there can be no assurance that the final purchase price will not be adjusted. Of the $205.0 million, $20.0 million was funded into an escrow account to support any indemnification claims made by Eisai following the closing of the sale.

As more fully described in Note 13, $38.6 million of the funds received from Eisai have been deposited into a restricted account to be used to repay a loan, plus interest, the Company received from the expected acquirer of the Company’s product, AVINZA. If the transaction to sell the AVINZA product line closes as expected, the principal and interest on the loan will be forgiven.

After closing of the Oncology purchase, Ligand will receive no further direct cash flows related to the oncology products. The Company has, however, in connection with the Oncology Purchase Agreement with Eisai, entered into a transition services agreement whereby Ligand will perform certain transition services for Eisai, in order to effect, as rapidly as practicable, the transition of purchased assets from Ligand to Eisai. In exchange for these services, Eisai will pay a monthly service fee to the Company. The term of the transition services provided is generally three months; however, certain services will be provided for a period of up to eight months.

Assets and liabilities of the Company’s Oncology Product Line classified as held for sale as of September 30, 2006 are as follows (in thousands):


	September 30,
	2006
	(unaudited)
ASSETS
Current assets:
Current portion of inventories, net (1)	$	6,764
Other current assets (2)		1,291

Total current portion of assets held for sale		8,055

Long-term portion of inventories, net (1)		3,913
Equipment, net of accumulated depreciation (1)		50
Acquired technology, product rights and royalty buy-down, net (1)		51,717
Other assets (1)		2,127

Total long-term portion of assets held for sale		57,807

Total assets held for sale	$	65,862


LIABILITIES
Current liabilities:
Current portion of deferred revenue, net (2)	$	26,803

Total current portion of liabilities related to assets held for sale		26,803

Long-term portion of deferred revenue, net (2)		1,479
Other long-term liabilities (1)		538

Total long-term portion of liabilities related to assets held for sale		2,017

Total liabilities related to assets held for sale	$	28,820


(1)		Represents assets acquired or liabilities assumed by Eisai in accordance with the terms of the Oncology Purchase Agreement.

(2)		Represents assets or liabilities that will be eliminated from the Company’s condensed consolidated balance sheet in connection with the Oncology sale transaction.

The following table summarizes results from discontinued operations for the three and nine months ended September 30, 2006 and 2005 included in the condensed consolidated statements of operations (in thousands):


	Three Months						Nine Months
	Ended September 30,						Ended September 30,
	2006			2005			2006			2005
	(unaudited)
Product sales	$	13,292		$	12,676		$	42,457		$	39,997
Collaborative research and development and other revenues		75			77			188			232

Total revenues		13,367			12,753			42,645			40,229

Operating costs and expenses:
Cost of products sold		3,410			3,385			12,448			13,552
Research and development		4,166			4,991			11,734			18,383
Selling, general and administrative		3,722			3,303			12,688			14,018

Total operating costs and expenses		11,298			11,679			36,870			45,953

Income (loss) from operations		2,069			1,074			5,775			(5,724	)
Interest expense		(1	)		(54	)		(51	)		(82	)

Income (loss) before income taxes		2,068			1,020			5,724			(5,806	)
Income tax expense		(845	)		(17	)		(2,342	)		(54	)

Net income (loss)	$	1,223		$	1,003		$	3,382		$	(5,860	)

Selected Information Regarding Discontinued Operations

Inventories

Inventories consist of the following (in thousands):


	September 30,
	2006
Raw materials	$	1,246
Work-in-process		8,004
Finished goods		2,631
Less: inventory reserves		(1,204	)

		10,677
Less: current portion		(6,764	)

Long-term portion of inventories, net	$	3,913

In 2005, the Company completed a multi-year process of transferring its filling and finishing of ONTAK from Eli Lilly (Lilly) and Company to Hollister-Stier. In anticipation of this transfer, the Company used Lilly to fill and finish, in 2003, a higher than normal number of ONTAK lots, each of which required a forward dating determination. ONTAK otherwise has a shelf life projection of up to 36 months. As of September 30, 2006 total ONTAK inventory amounted to approximately $7.0 million, of which $2.0 million is classified as long-term, respectively.

During 2005, the Company manufactured a higher than normal amount of drug substance (bexarotene) for Targretin capsules in the event the Company’s non-small cell lung cancer (“NSCLC”) clinical trials were successful. In March 2005, the Company disclosed that the trials did not meet their endpoints of improved overall survival and projected two year survival. The additional manufactured bexarotene has a shelf life projection of approximately 10

years. As of September 30, 2006, total Targretin capsules inventory amounted to $3.4 million, of which $1.9 million is classified as long-term.

Acquired Technology, Product Rights and Royalty Buy-Down, Net

Acquired technology, product rights and royalty buy-down, net as of September 30, 2006 include payments made in 2005 totaling $33.0 million to Lilly in exchange for the elimination of the Company’s ONTAK royalty obligations in 2005 and 2006 and a reduced reverse-tiered royalty scale on ONTAK sales in the U.S. thereafter. Other acquired technology and product rights represent payments related to the Company’s acquisition of ONTAK. As these assets are classified as held for sale effective September 7, 2006, the Company ceased amortizing these assets as of that date.

Acquired technology, product rights, and royalty buy-down, net consist of the following (in thousands):


	September 30,
	2006
ONTAK		78,312
Less accumulated amortization		(26,595	)

	$	51,717

Amortization of acquired technology, product rights and royalty buy-down, net was $1.2 million and $4.3 million for the three and nine months ended September 30, 2006 and $1.6 million and $4.5 million, respectively, for the same 2005 periods.

Deferred Revenue, Net

The composition of deferred revenue, net is as follows (in thousands):


	September 30,
	2006
Deferred product revenue	$	26,648
Other deferred revenue		1,778
Deferred discounts		(144	)

Deferred revenue, net	$	28,282


Deferred revenue, net:
Current, net	$	26,803
Long term, net		1,479

	$	28,282


Deferred product revenue, net:
Current	$	26,504
Long term		—

	$	26,504


Other deferred revenue:
Current	$	299
Long term		1,479

	$	1,778

Net Product Sales

A comparison of sales by product is as follows (in thousands):


	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2006		2005		2006		2005
ONTAK	$	6,574	$	7,371	$	23,960	$	24,173
Targretin capsules		5,610		4,394		15,608		13,080
Targretin gel and Panretin gel		1,108		911		2,889		2,744

Total product sales	$	13,292	$	12,676	$	42,457	$	39,997

3. Accounts Receivable Factoring Arrangement

During 2003, the Company entered into a one-year accounts receivable factoring arrangement under which eligible accounts receivable are sold without recourse to a finance company. The agreement was renewed for a one-year period in the second quarter of 2004 and for two years in the second quarter of 2005 through December 2007. Commissions on factored receivables are paid to the finance company based on the gross receivables sold, subject to a minimum annual commission. Additionally, the Company pays interest on the net outstanding balance of the uncollected factored accounts receivable at an interest rate equal to the JPMorgan Chase Bank prime rate. The Company continues to service the factored receivables. The servicing expenses for the three and nine months ended September 30, 2006 and 2005 were not material. There were no material gains or losses on the sale of such receivables. The Company accounts for the sale of receivables under this arrangement in accordance with SFAS No. 140, Accounting for Transfers and Servicing of Financial Assets and Extinguishment of Liabilities. The gross amount due from the finance company at September 30, 2006 and December 31, 2005 was $1.2 million and $20.5 million, respectively.

4. Buyout of Salk Royalty Obligations

In January 2005, Ligand paid the Salk Institute (“Salk”) $1.1 million to exercise an option to buy out milestone payments, other payment-sharing obligations and royalty payments due on future sales of lasofoxifene for vaginal atrophy. This payment resulted from a supplemental lasofoxifene new drug application (“NDA”) filing by Pfizer. As the Company had previously sold rights to Royalty Pharma AG of approximately 50% of any royalties to be received from Pfizer for sales of lasofoxifene, it recorded approximately 50% of the payment made to Salk, approximately $0.6 million, as development expense in the first quarter of 2005. The balance of approximately $0.5 million was capitalized to be amortized over the period any such royalties were to be received from Pfizer for the vaginal atrophy indication. In connection with Pfizer’s receipt of a non-approvable letter from the FDA for the vaginal atrophy indication in February 2006, however, the Company wrote-off the remaining capitalized balance of $0.5 million in the fourth quarter of 2005.

In August 2006, Ligand paid Salk $0.8 million to exercise an option to buy out milestone payments, other payment sharing obligations and royalty payments due on future sales of bazedoxifene, a product being developed by Wyeth. This payment resulted from a bazedoxifene NDA filed by Wyeth for postmenopausal osteoporosis therapy. The Company recognized the $0.8 million payment as development expense in the three months ended September 30, 2006.

5. AVINZA Co-Promotion

In February 2003, Ligand and Organon Pharmaceuticals USA Inc. (“Organon”) announced that they had entered into an agreement for the co-promotion of AVINZA. Under the terms of the agreement, Organon committed to a specified minimum number of primary and secondary product calls delivered to certain high prescribing physicians and hospitals beginning in March 2003. Organon’s compensation was structured as a percentage of net sales based on generally accepted accounting principles (“GAAP”), which paid Organon for their efforts and also provided Organon an economic incentive for performance and results. In exchange, Ligand paid Organon a percentage of AVINZA net sales based on the following schedule:


	% of Incremental Net Sales
Annual Net Sales of AVINZA	Paid to Organon by Ligand
$0-150 million	30% (0% for 2003)
$150-300 million		40	%
$300-425 million		50	%
> $425 million		45	%

In January 2006, Ligand signed an agreement with Organon that terminated the AVINZA co-promotion agreement between the two companies and returned AVINZA co-promotion rights to Ligand. The effective date of the termination agreement is January 1, 2006; however, the parties agreed to continue to cooperate during a transition period that ended September 30, 2006 (the “Transition Period”) to promote the product. The Transition Period co-operation included a minimum number of product sales calls per quarter (100,000 for Organon and 30,000 for Ligand with an aggregate of 375,000 and 90,000, respectively, for the Transition Period) as well as the transition of ongoing promotions, managed care contracts, clinical trials and key opinion leader relationships to Ligand. During the Transition Period, Ligand was responsible for paying Organon an amount equal to 23% of AVINZA net sales as reported by Ligand. Ligand was also responsible for the design and execution of all clinical, advertising and promotion expenses and activities.

Additionally, in consideration of the early termination and return of rights under the terms of the agreement, Ligand agreed to pay Organon $37.8 million on or before October 15, 2006. Ligand will further pay Organon $10.0 million on or before January 15, 2007, provided that Organon has made its minimum required level of sales calls. Under certain conditions, including closing of the planned sale of AVINZA to King as further discussed below, the $10.0 million payment will accelerate. In addition, after the termination, Ligand agreed to make quarterly payments to Organon equal to 6.5% of AVINZA net sales through December 31, 2012 and thereafter 6.0% through patent expiration, currently anticipated to be November of 2017.

The unconditional payment of $37.8 million to Organon and the estimated fair value of the amounts to be paid to Organon after the termination ($95.2 million as of January 1, 2006), based on the net sales of the product (currently anticipated to be paid quarterly through November 2017) were recognized as liabilities and expensed as costs of the termination as of the effective date of the agreement, January 2006. Additionally, the conditional payment of $10.0 million, which represents an approximation of the fair value of the service element of the agreement during the Transition Period (when the provision to pay 23% of AVINZA net sales is also considered), was recognized ratably as additional co-promotion expense over the Transition Period. For the three and nine months ended September 30, 2006, the pro-rata recognition of this element of co-promotion expense amounted to $3.3 million and $10.0 million, respectively.

for Costs Associated with Exit or Disposal Activities. Any changes to the Company’s estimates of future net AVINZA product sales will result in a change to the liability which will be recognized as an increase or decrease to co-promote termination charges in the period such changes are identified. The adjustment to recognize the fair value of the termination liability for the three and nine months ended September 30, 2006 was $3.6 million and $10.4 million, respectively.

On a quarterly basis, management reviews the carrying value of the co-promote termination liability. Due to assumptions and judgments inherent in determining the estimates of future net AVINZA sales through November 2017, the actual amount of net AVINZA sales used to determine the current fair value of the Company’s co-promote termination liability may be materially different from its current estimates. In addition, because of the inherent difficulties of predicting possible changes to the estimates and assumptions used to determine the estimate of future AVINZA product sales, the Company is unable to quantify an estimate of the reasonably likely effect of any such changes on its results of operations or financial position. For the three months ended June 30, 2006, the Company recorded a reduction in the co-promote termination liability and a corresponding credit to “co-promote termination charges” of approximately $0.4 million based on the Company’s updated estimate of future AVINZA net sales.

The components of the co-promote termination liability as of September 30, 2006 are as follows (in thousands):


Payment due October 15, 2006	$	37,750
Net present value of payments based on estimated future net AVINZA product sales as of January 1, 2006		95,191
Reduction in net present value of liability resulting from updated estimate of net AVINZA product sales		(404	)
Fair value adjustment to payments based on net AVINZA product sales as of September 30, 2006		10,443

		142,980
Less: current portion of co-promote termination liability		(47,722	)

Long-term portion of co-promote termination liability	$	95,258

On September 6, 2006, Ligand and King entered into a Purchase Agreement (the “Purchase Agreement”), pursuant to which King agreed to acquire all of the Company’s rights in and to AVINZA and to assume certain liabilities, including the product-related liabilities owed by the Company to Organon of approximately $47.8 million (or reimbursement to Ligand at closing of the asset sale to the extent any such amounts have been paid). King will also assume the Company’s co-promote termination obligation to make payments to Organon based on net sales of AVINZA (approximately $105.2 million as of September 30, 2006). In connection with the transaction, King committed to loan the Company, at the Company’s option, $37.8 million to be used to pay the portion of the Company’s co-promote termination obligation to Organon due October 15, 2006. This loan was drawn, and the $37.8 million co-promote liability settled in October 2006. As more fully described in Note 13, $38.6 million of the funds received from Eisai have been deposited into a restricted account to be used to repay the loan, plus interest. If the transaction to sell the AVINZA product line closes as expected, the principal and interest will be forgiven.

6. Litigation

Securities Litigation

Since August 2004, the Company has been involved in several securities class action and shareholder derivative actions which followed announcements by the Company in 2004 and the subsequent restatement of its financial results in 2005. In June 2006, the Company announced that these lawsuits had been settled, subject to certain conditions such as court approval.

Background

The actions were brought on behalf of purchasers of the Company’s common stock during several time periods, the longest of which runs from July 28, 2003 through August 2, 2004. The complaints generally allege that the Company violated Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 of the Securities and Exchange Commission by making false and misleading statements, or concealing information about the Company’s business, forecasts and financial performance, in particular statements and information related to drug development issues and AVINZA inventory levels. These lawsuits have been consolidated and lead plaintiffs appointed. A consolidated complaint was filed by the plaintiffs in March 2005. On September 27, 2005, the court granted the Company’s motion to dismiss the consolidated complaint, with leave for plaintiffs to file an amended complaint within 30 days. In December 2005, the plaintiffs filed a second amended complaint again alleging claims under Section 10(b) and 20(a) of the Securities Exchange Act against the Company, David Robinson and Paul Maier. The amended complaint asserts an expanded Class Period of March 19, 2001 through May 20, 2005 and includes allegations arising from the Company’s announcement on May 20, 2005 that it would restate certain financial results. Defendants filed their motion to dismiss plaintiffs’ second amended complaint in January 2006.

Beginning on or about August 13, 2004, several derivative actions were filed on behalf of the Company by individual stockholders in the Superior Court of California. The complaints name the Company’s directors and certain of its officers as defendants and name the Company as a nominal defendant. The complaints are based on the same facts and circumstances as the purported class actions discussed in the previous paragraph and generally allege breach of fiduciary duties, abuse of control, waste and mismanagement, insider trading and unjust enrichment. These actions were in the discovery phase.

In October 2005, a shareholder derivative action was filed on behalf of the Company in the United States District Court for the Southern District of California. The complaint names the Company’s directors and certain of its officers as defendants and the Company as a nominal defendant. The action was brought by an individual stockholder. The complaint generally alleges that the defendants falsified Ligand’s publicly reported financial results throughout 2002 and 2003 and the first three quarters of 2004 by improperly recognizing revenue on product sales. The complaint generally alleges breach of fiduciary duty by all defendants and requests disgorgement, e.g., under Section 304 of the Sarbanes-Oxley Act of 2002. In January 2006, the defendants filed a motion to dismiss plaintiffs’ verified shareholder derivative complaint. Plaintiffs’ opposition was filed in February 2006.

The Settlement Agreements

In June 2006, the Company entered into agreements to resolve all claims by the parties in each of these matters, including those asserted against the Company and the individual defendants in these cases. Under the agreements, the Company agreed to pay a total of $12.2 million in cash for a release and in full settlement of all claims. $12.0 million of the settlement amount and a portion of the Company’s total legal expenses was funded by the Company’s Directors and Officers Liability insurance carrier while the remainder of the legal fees incurred ($1.4 million for the three months ended June 30, 2006) was paid by the Company. Of the $12.2 million settlement liability, $4.0 million was paid in October 2006 to the Company directly from the insurance carrier and then disbursed to the claimants’ attorneys, while $8.0 million will be paid by the insurance carrier directly to an independent escrow agent responsible for disbursing the funds to the class action suit claimants. In July 2006, the Company’s insurance carrier funded the escrow account with the $8.0 million to be disbursed to the claimants. Under SFAS No. 140, “Accounting for Transfers and Servicing of Financial Assets and Extinguishments of Liabilities”, funding of the escrow account represents the extinguishment of the Company’s liability to the claimants. Accordingly, the Company derecognized the $8.0 million receivable and accrued liability in its consolidated financial statements as of September 30, 2006.

As part of the settlement of the state derivative action, the Company has agreed to adopt certain corporate governance enhancements including the formalization of certain Board practices and responsibilities, a Board self-evaluation process, Board and Board Committee term limits (with gradual phase-in) and one-time enhanced independence requirements for a single director to succeed the current shareholder representatives on the Board. Neither the Company nor any of its current or former directors and officers has made any admission of liability or wrongdoing. On October 12, 2006, the Superior Court of California approved the settlement of the state derivative actions and entered final judgment of dismissal. The United States District Court has preliminarily approved the

settlement of the Federal class action, however, that settlement and the settlement of the Federal derivative actions are all subject to final approval and orders of the court.

SEC Investigation and Other Matters

In connection with the restatement of the Company’s consolidated financial statements, the SEC instituted a formal investigation concerning the consolidated financial statements. These matters were previously the subject of an informal SEC inquiry. Ligand has been cooperating fully with the SEC and will continue to do so in order to bring the investigation to a conclusion as promptly as possible.

The Company’s subsidiary, Seragen, Inc. and Ligand, were named parties to Sergio M. Oliver, et al. v. Boston University, et al., a putative shareholder class action filed on December 17, 1998 in the Court of Chancery in the State of Delaware in and for New Castle County, C.A. No. 16570NC, by Sergio M. Oliver and others against Boston University and others, including Seragen, its subsidiary Seragen Technology, Inc. and former officers and directors of Seragen. The complaint, as amended, alleged that Ligand aided and abetted purported breaches of fiduciary duty by the Seragen related defendants in connection with the acquisition of Seragen by Ligand and made certain misrepresentations in related proxy materials and seeks compensatory and punitive damages of an unspecified amount. On July 25, 2000, the Delaware Chancery Court granted in part and denied in part defendants’ motions to dismiss. Seragen, Ligand, Seragen Technology, Inc. and the Company’s acquisition subsidiary, Knight Acquisition Corporation, were dismissed from the action. Claims of breach of fiduciary duty remain against the remaining defendants, including the former officers and directors of Seragen. The court certified a class consisting of shareholders as of the date of the acquisition and on the date of the proxy sent to ratify an earlier business unit sale by Seragen. On January 20, 2005, the Delaware Chancery Court granted in part and denied in part the defendants’ motion for summary judgment. Prior to trial, several of the Seragen director-defendants reached a settlement with the plaintiffs. The trial in this action then went forward as to the remaining defendants and concluded on February 18, 2005. On April 14, 2006, the court issued a memorandum opinion finding for the plaintiffs and against Boston University and individual directors affiliated with Boston University on certain claims. The opinion awards damages on these claims in the amount of approximately $4.8 million plus interest. Judgment, however, has not been entered and the matter is subject to appeal. While Ligand and its subsidiary Seragen have been dismissed from the action, such dismissal is also subject to appeal, and Ligand and Seragen may have possible indemnification obligations with respect to certain defendants. As of September 30, 2006, the Company has not accrued an indemnification obligation based on its assessment that the Company’s responsibility for any such obligation is not probable or estimable.

In addition, the Company is subject to various lawsuits and claims with respect to matters arising out of the normal course of business. Due to the uncertainty of the ultimate outcome of these matters, the impact on future financial results is not subject to reasonable estimates.

7. New Accounting Pronouncements

In November 2005, the FASB issued Staff Positions (“FSPs”) Nos. FSPs 115-1 and 124-1, The Meaning of Other-Than-Temporary Impairment and Its Application to Certain Investments, in response to EITF 03-1, The Meaning of Other-Than-Temporary Impairment and Its Application to Certain Investments (“EITF 03-1”). FSPs 115-1 and 124-1 provide guidance regarding the determination as to when an investment is considered impaired, whether that impairment is other-than-temporary, and the measurement of an impairment loss. FSPs 115-1 and 124-1 also include accounting considerations subsequent to the recognition of an other-than-temporary impairment and requires certain disclosures about unrealized losses that have not been recognized as other-than temporary-impairments. These requirements are effective for annual reporting periods beginning after December 15, 2005. The adoption of the impairment guidance contained in FSPs 115-1 and 124-1 did not have a material impact on the Company’s results of operations or financial position.

In November 2004, the FASB issued SFAS No. 151, Inventory Pricing (“SFAS 151”). SFAS 151 amends the guidance in ARB No. 43, Chapter 4, “Inventory Pricing,” to clarify the accounting for abnormal amounts of idle facility expense, freight, handling costs, and wasted material (spoilage). This statement requires that those items be recognized as current-period charges. In addition, SFAS 151 requires that allocation of fixed production overheads

to the costs of conversion be based on the normal capacity of the production facilities. This statement is effective for inventory costs incurred during fiscal years beginning after June 15, 2005. The adoption of SFAS No. 151 did not have a material impact on the Company’s results of operations or financial position.

In February 2006, the FASB issued SFAS No. 155, Accounting for Certain Hybrid Financial Instruments (“SFAS 155”) which amends SFAS No. 133, Accounting for Derivative Instruments and Hedging Activities (“SFAS 133”) and SFAS 140, Accounting or the Impairment or Disposal of Long-Lived Assets (“SFAS 140”). Specifically, SFAS 155 amends SFAS 133 to permit fair value remeasurement for any hybrid financial instrument with an embedded derivative that otherwise would require bifurcation, provided the whole instrument is accounted for on a fair value basis. Additionally, SFAS 155 amends SFAS 140 to allow a qualifying special purpose entity to hold a derivative financial instrument that pertains to a beneficial interest other than another derivative financial instrument. SFAS 155 applies to all financial instruments acquired or issued after the beginning of an entity’s first fiscal year that begins after September 15, 2006, with early application allowed. The adoption of SFAS 155 is not expected to have a material impact on the Company’s results of operations or financial position.

In March 2006, the FASB issued SFAS No. 156, Accounting for Servicing of Financial Assets (SFAS 156) to simplify accounting for separately recognized servicing assets and servicing liabilities. SFAS 156 amends SFAS No. 140, Accounting for Transfers and Servicing of Financial Assets and Extinguishments of Liabilities. Additionally, SFAS 156 applies to all separately recognized servicing assets and liabilities acquired or issued after the beginning of an entity’s fiscal year that begins after September 15, 2006, although early adoption is permitted. The adoption of SFAS 156 is not expected to have a material impact on the Company’s results of operations or financial position.

In July 2006, the FASB issued FASB Interpretation No. 48 (“FIN 48”) Accounting for Uncertainty in Income Taxes- an interpretation of FASB Statement No. 109. FIN 48 clarifies the accounting for uncertainty in income taxes recognized in a company’s financial statements in accordance with FASB Statement No. 109. It prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. Additionally, FIN 48 provides guidance on derecognition, classification, interest and penalties, accounting in interim periods, disclosure, and transition. FIN 48 is effective for fiscal years beginning after December 15, 2006. The adoption of FIN 48 is not expected to have a material impact on the Company’s results of operations or financial position.

In September 2006, the FASB issued SFAS No. 157, Fair Value Measurements (SFAS 157). SFAS 157 defines fair value, establishes a framework for measuring fair value under GAAP, and expands disclosures about fair value measurements. SFAS 157 applies under other accounting pronouncements that require or permit fair value measurements where fair value has previously been concluded to be the relevant measurement attribute. SFAS No. 157 is effective for financial statements issued for fiscal years beginning after November 15, 2007. The adoption of SFAS No. 157 is not expected to have a material impact on the Company’s results of operations or financial position.

In September 2006, the FASB issued SFAS No. 158, Employers’ Accounting for Defined Benefit Pension and Other Postretirement Plans, an amendment of FASB Statement No. 87, 88, 106 and 132(R) (“FAS 158”). Under FAS 158, companies must recognize a net liability or asset to report the funded status of their defined benefit pension and other postretirement benefit plans (collectively referred to herein as “benefit plans”) on their balance sheets, starting with balance sheets as of December 31, 2006 if they are calendar year-end public company. FAS 158 also changed certain disclosures related to benefit plans. The adoption of FAS 158 is not expected to have a material impact on the Company’s results of operations or financial position.

In September 2006, the SEC released Staff Accounting Bulletin No. 108, “Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements” (“SAB 108”). SAB 108 provides guidance on how the effects of prior-year uncorrected financial statement misstatements should be considered in quantifying a current year misstatement. SAB 108 requires registrants to quantify misstatements using both an income statement (rollover) and balance sheet (iron curtain) approach and evaluate whether either approach results in a misstatement that, when all relevant quantitative and qualitative factors are considered, is material. If prior year errors that had been previously considered immaterial are now considered material based on either approach, no restatement is required as long as management properly applied its previous approach and all relevant

facts and circumstances were considered. If prior years are not restated, the cumulative effect adjustment is recorded in opening retained earnings as of the beginning of the fiscal year of adoption. SAB 108 is effective for fiscal years ending on or after November 15, 2006. The Company does not expect the adoption of SAB 108 to have a material impact on our consolidated financial condition or results of operations.

8. Commitments and Contingencies

Stockholders Agreement

In October 2005, a lawsuit was filed in the Court of Chancery in the State of Delaware by Third Point Offshore Fund, Ltd. requesting the Court to order Ligand to hold an annual meeting for the election of directors within 60 days of an order by the Court. Ligand’s annual meeting had been delayed as a result of the previously announced restatement. The complaint sought payment of plaintiff’s costs and attorney’s fees. Ligand agreed on November 11, 2005 to settle this lawsuit and schedule the annual meeting for January 31, 2006. On December 2, 2005, Ligand and Third Point also entered into a stockholders agreement under which, among other things, Ligand agreed to expand its board from eight to eleven, elect three designees of Third Point to the new board seats and pay certain of Third Point’s expenses, not to exceed approximately $0.5 million. Of such amount, approximately 50% was paid and expensed in the fourth quarter of 2005. A second payment of approximately $0.2 million was made and expensed in the second quarter of 2006. Unless approved by the Board of Directors of the Company, Third Point may not purchase additional shares of Ligand, sell its Ligand shares, solicit proxies or take certain other stockholder actions as long as its designees remain on the board.

9. Employee Retention and Severance Agreements

In March 2006, the Company entered into letter agreements with approximately 67 of its key employees, including a number of its executive officers. In September 2006, the Company entered into letter agreements with ten additional key employees and modified existing agreements with two employees. These letter agreements provide for certain retention or stay bonus payments in cash under specified circumstances as an additional incentive to remain employed in good standing with the Company. The Compensation Committee of the Board of Directors has approved the Company’s entry into these agreements. The retention or stay bonus payments generally vest at the end of 2006 and total payments to employees of approximately $3.0 million would be made in January 2007 if all participants qualify for the payments. In accordance with SFAS 146, Accounting for Costs Associated with Exit or Disposal Activities, the cost of the plan is ratably accrued over the term of the agreements. For the three and nine months ended September 30, 2006, the Company recognized approximately $1.0 million and $2.1 million, respectively, of expense under the plan. As an additional retention incentive, certain employees were also granted stock options totaling approximately 122,000 shares at an exercise price of $11.90 per share.

In August 2006 and October 2006, the Company’s Compensation Committee approved and ratified, and the Company provided additional severance agreements to certain of its officers and executive officers as additional retention incentives and to provide severance benefits to these officers that are more closely equivalent to severance benefits already in place for other executive officers.

These additional agreements consist of a) change of control severance agreements (“Change of Control Severance Agreement”) and b) “ordinary” severance agreements that apply regardless of a change of control (“Ordinary Severance Agreement”). Each Change of Control Severance Agreement provides for payment of certain benefits to the officer in the event their employment is terminated without cause in connection with a change of control of the Company.

These benefits include one year of salary, plus the average bonus (if any) for the prior two years and payment of health care premiums for one year. With certain exceptions, the officer must be available for consulting services for one year and must abide by certain restrictive covenants, including non-competition and non-solicitation of the Company’s employees. Each Ordinary Severance Agreement provides for payment of six months salary in the event the officer’s employment is terminated without cause, regardless of a change of control.

Additionally, in October 2006, the Company implemented a 2006 Employee Severance Plan for those employees who were not covered by another severance arrangement. The plan provides that if such an employee is involuntarily terminated without cause, and not offered a similar or better job by one of the purchasers of the Company’s product lines (i.e. King or Eisai) such employee will be eligible for severance benefits. The benefits consist of two months’ salary, plus one week of salary for every full year of service with the Company plus payment of COBRA health care coverage premiums for that same period.

10. Lilly Collaboration Update

In May 2006, after review of all preclinical and clinical data including recently completed two year animal safety studies, Lilly informed the Company that it had decided not to pursue further development at this time of LY818 (“Naveglitazar”), a compound in Phase II development for the treatment of Type II diabetes. Naveglitazar, a dual PPAR agonist was developed through the Company’s collaborative research and development agreement with Lilly. This decision is specific with regard to Naveglitazar.

In September 2006, Lilly informed the Company that it had suspended an ongoing mid-stage human trial of LY674 in order to assess unexpected findings noted during animal safety studies of the same compound and evaluate collective clinical efficacy and safety from the human data already gathered. LY674, a PPAR alpha agonist compound in Phase II development for the treatment of atherosclerosis, was developed through the Company’s collaborative research and development agreement with Lilly. This decision is specific with regard to LY674.

11. NASDAQ Relisting

On June 12, 2006, NASDAQ approved the Company’s application for relisting its common stock on the NASDAQ Global Market (formerly National Market). The Company commenced trading on the NASDAQ Global Market on June 14, 2006, under the symbol “LGND.” The Company’s common stock was previously delisted from the NASDAQ National Market on September 7, 2005.

12. Resignation of CEO and Appointment of New Interim CEO

On July 31, 2006, the Company entered into a separation agreement with David Robinson providing for Mr. Robinson’s resignation as Chairman, President, and Chief Executive Officer of the Company. Under the separation agreement, Mr. Robinson will receive his base salary and certain benefits for 24 months, payable in five equal monthly installments beginning August 1, 2006 and ending December 1, 2006. In addition, the agreement provides for the immediate vesting of Mr. Robinson’s unvested stock options and an extension of the exercise period of his options to January 15, 2007. In connection with the resignation, the Company recognized expense of approximately $1.9 million for the three months ended September 30, 2006, comprised of cash payments of $1.4 million and stock-based compensation of $0.5 million associated with the modification of the vesting and exercise period of the stock options.

On August 1, 2006, the Company announced that current director Henry F. Blissenbach had been named Chairman and interim Chief Executive Officer. The Company has agreed to pay Dr. Blissenbach $40,000 per month, commencing August 1, 2006, subject to cancellation by either party on thirty days’ notice, for his services as Chairman and interim Chief Executive Officer. In addition, Dr. Blissenbach will be eligible to receive incentive compensation of up to 50% of his base salary, but not more than $100,000, based upon his performance of certain objectives incorporated within the employment agreement which the Company and Dr. Blissenbach have entered into. Also, Dr. Blissenbach received a stock option grant to purchase 150,000 shares of the Company’s common stock at an exercise price of $9.20 per share. These stock options will vest 50% at the end of six months and the remaining 50% will vest at the end of one year, except that all of these stock options will vest upon the appointment of a new chief executive officer. Finally, the Company will reimburse Dr. Blissenbach for all reasonable expenses incurred in discharging his duties as interim Chief Executive Officer, including, but not limited to commuting costs to San Diego and living and related costs during the time he spends in San Diego.

13. Sale of AVINZA Product Line

On September 6, 2006, Ligand and King Pharmaceuticals, Inc. (“King”), entered into a purchase agreement (the “AVINZA Purchase Agreement”), pursuant to which King agreed to acquire all of the Company’s rights in and to AVINZA in the United States, its territories and Canada, including, among other things, all AVINZA inventory, equipment, records and related intellectual property, and assume certain liabilities as set forth in the AVINZA Purchase Agreement (collectively, the “Transaction”). In addition, King has, subject to the terms and conditions of the AVINZA Purchase Agreement, agreed to offer employment following the closing of the Transaction (the “Closing”) to certain of the Company’s existing AVINZA sales representatives or otherwise reimburse the Company for agreed upon severance arrangements offered to any such non-hired representatives.

Pursuant to the AVINZA Purchase Agreement, at Closing, the Company will be paid a $265.0 million cash payment, $15.0 million of which will be funded into an escrow account to support any indemnification claims made by King following the Closing and King will assume certain liabilities, including product-related liabilities owed by the Company to Organon of approximately $47.8 million and all other existing product royalty obligations including the Organon co-promote termination obligation to Organon ($105.2 million as of September 30, 2006). The closing payment is subject to adjustment based on the Company’s ability to reduce wholesale and retail inventory levels of AVINZA to certain targeted levels by Closing in accordance with the AVINZA Purchase Agreement.

In addition to the assumption of existing royalty obligations, King will pay Ligand a 15% royalty on AVINZA net sales during the first 20 months after Closing. Subsequent royalty payments will be based upon calendar year net sales. If calendar year net sales are less than $200 million, the royalty payment will be 5% of all net sales. If calendar year net sales are greater than $200 million, the royalty payment will be 10% of all net sales less than $250 million, plus 15% of net sales greater than $250 million.

In connection with the Transaction, King committed to loan the Company, at the Company’s option, $37.8 million (the “Loan”) to be used to pay the Company’s co-promote termination obligation to Organon due October 15, 2006. This loan was drawn, and the $37.8 million co-promote liability settled in October 2006. Amounts due under the loan are subject to certain market terms, including a 9.5% interest rate. In addition, and as a condition of the $37.8 million loan received from King, $38.6 million of the funds received from Eisai was deposited into a restricted account to be used to repay the loan to King, plus interest, due January 1, 2007. If the Transaction closes as contemplated by the AVINZA Purchase Agreement, the interest and principal will be forgiven.

The AVINZA Purchase Agreement may be terminated by either King or the Company if the Closing has not occurred by December 31, 2006, or upon the occurrence of certain customary matters. In addition, if the AVINZA Purchase Agreement is terminated under certain circumstances, including a determination by the Company’s Board of Directors to accept an acquisition proposal it deems superior, the Company has agreed to pay King a termination fee of $12.0 million. The Closing is subject to certain closing conditions, including, but not limited to, Ligand stockholder approval of the transaction, the expiration or early termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, or HSR, the conversion or redemption prior to Closing of all of our outstanding 6% Convertible Subordinated Notes due 2007 of the Company, and certain other customary closing conditions. Early termination of the waiting period under HSR occurred on October 5, 2006.

Also on September 6, 2006, the Company entered into a contract sales force agreement (the “Sales Agreement”) with King, pursuant to which King agreed to conduct a sales detailing program to promote the sale of AVINZA for an agreed upon fee, subject to the terms and conditions of the Sales Agreement. Pursuant to the Sales Agreement, King agreed to perform certain minimum monthly product details (i.e. sales calls), which commenced effective October 1, 2006 and will continue for a period of six months following such date or until the Closing or earlier termination of the AVINZA Purchase Agreement. The Company estimates that, assuming the Closing were to occur at the end of December 2006, the amount due to King under the Sales Agreement would be approximately $4.0 million.

14. Subsequent Events

Sale and Leaseback of Premises

On October 25, 2006, the Company, along with its wholly-owned subsidiary Nexus entered into an agreement with Slough for the sale of the Company’s real property located in San Diego, California for a purchase price of approximately $47.6 million. This property, with a net book value of approximately $14.5 million, includes one building totaling approximately 82,500 square feet, the land on which the building is situated, and two adjacent vacant lots. As part of the sale transaction, the Company agreed to leaseback the building for a period of 15 years, as further described below. In connection with the sale transaction, on November 6, 2006, the Company paid off the existing mortgage on the building of approximately $11.6 million. The early payment triggered a prepayment penalty of approximately $0.4 million. The sale transaction subsequently closed on November 9, 2006.

Under the terms of the lease, the Company will pay a basic annual rent of $3.0 million (subject to an annual fixed percentage increase, as set forth in the agreement), plus a 1% annual management fee, property taxes and other normal and necessary expenses associated with the lease such as utilities, repairs and maintenance, etc. The Company will have the right to extend the lease for two five-year terms and will have the first right of refusal to lease, at market rates, any facilities built on the sold lots.

In accordance with SFAS 13, Accounting for Leases, the Company expects to recognize an immediate pre-tax gain on the sale transaction of approximately $2.9 million and defer a gain of approximately $29.5 million on the sale of the building. The deferred gain will be recognized on a straight-line basis over the 15 year term of the lease at a rate of approximately $2.0 million per year.

Stockholder Rights Plan

In October 2006, the Company’s Board of Directors renewed the Company’s stockholder rights plan, which was originally adopted and has been in place since September 2002, and which expired on September 13, 2006, through the adoption of a new 2006 Stockholder Rights Plan (the “2006 Rights Plan”). The 2006 Rights Plan provides for a dividend distribution of one preferred share purchase right (a “Right”) on each outstanding share of the Company’s common stock. Each Right entitles stockholders to buy 1/1000th of a share of Ligand Series A Participating Preferred Stock at an exercise price of $100. The Rights will become exercisable if a person or group announces an acquisition of 20% or more of the Company’s common stock, or announces commencement of a tender offer for 20% or more of the common stock. In that event, the Rights permit stockholders, other than the acquiring person, to purchase the Company’s common stock having a market value of twice the exercise price of the Rights, in lieu of the Preferred stock. In addition, in the event of certain business combinations, the Rights permit the purchase of the common stock of an acquiring person at a 50% discount. Rights held by the acquiring person become null and void in each case. The 2006 Rights Plan expires in 2016.

Conversion/Redemption of 6% Convertible Subordinated Notes

On October 30, 2006, the Company announced that it had given notice of redemption to the noteholders of its 6% convertible subordinated notes due November 2007. The redemption date of the notes has been set for November 29, 2006. The noteholders may elect to convert the 6% notes, on or before November 29, 2006, into shares of the Company’s common stock at a conversion rate of 161.9905 shares per $1,000 principal amount of the notes (approximately $6.17 per share). Based on the Company’s current stock price, the Company expects that the majority of the notes will be converted into shares of Ligand common stock. The $128.2 million of principal amount of the notes outstanding may be converted into approximately 20.8 million shares of common stock. The Company will pay the holders of those notes that are not converted into shares a redemption price equal to 101.2% of the outstanding principal amount plus accrued and unpaid interest.

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Caution: This discussion and analysis may contain predictions, estimates and other forward-looking statements that involve a number of risks and uncertainties, including those discussed in Part II. Item 1A. “Risk Factors.” This outlook represents our current judgment on the future direction of our business. These statements include those related to our products, product sales and other revenues, expenses, our revenue recognition models and policies, material weaknesses or deficiencies in internal control over financial reporting, revenue recognition, and strategic alternatives, including the pending sale of our AVINZA assets and related restructuring. Actual events or results may differ materially from Ligand’s expectations. For example, there can be no assurance that our product sales efforts or recognized revenues or expenses will meet any expectations or follow any trend(s), that our internal control over financial reporting will be effective or produce reliable financial information on a timely basis, or that our pending sale of the AVINZA assets and subsequent company restructuring will be timely or successfully completed. We cannot assure you that the Company will be able to successfully remediate any identified material weakness or significant deficiencies, or that the sell-through revenue recognition models will not require adjustment and not result in a subsequent restatement. In addition, the SEC investigation related to the Company’s 2005 restatement of financial results or future litigation may have an adverse effect on the Company, and our corporate or partner pipeline products may not gain approval or success in the market. Such risks and uncertainties, and others, could cause actual results to differ materially from any future performance suggested. We undertake no obligation to release publicly the results of any revisions to these forward-looking statements to reflect events or circumstances arising after the date of this quarterly report. This caution is made under the safe harbor provisions of Section 21E of the Securities Exchange Act of 1934, as amended.

Our trademarks, trade names and service marks referenced herein include Ligand^{^®} and AVINZA. Each other trademark, trade name or service mark appearing in this quarterly report belongs to its owner.

References to Ligand Pharmaceuticals Incorporated (“Ligand”, the “Company”, “we” or “our”) include our wholly owned subsidiaries – Ligand Pharmaceuticals (Canada) Incorporated; Ligand Pharmaceuticals International, Inc.; Seragen, Inc. (“Seragen”); and Nexus Equity VI LLC (“Nexus”).

Overview

We discover, develop and market drugs that address patients’ critical unmet medical needs in the areas of cancer, pain, men’s and women’s health or hormone-related health issues, skin diseases, osteoporosis, blood disorders and metabolic, cardiovascular and inflammatory diseases. Our drug discovery and development programs are based on our proprietary gene transcription technology, primarily related to Intracellular Receptors, also known as IRs, a type of sensor or switch inside cells that turns genes on and off, and Signal Transducers and Activators of Transcription, also known as STATs, which are another type of gene switch.

As of September 30, 2006, we marketed five products in the United States: AVINZA, for the relief of chronic, moderate to severe pain; ONTAK, for the treatment of patients with persistent or recurrent cutaneous T-cell lymphoma (CTCL); Targretin capsules, for the treatment of CTCL in patients who are refractory to at least one prior systemic therapy; Targretin gel, for the topical treatment of cutaneous lesions in patients with early stage CTCL; and Panretin gel, for the treatment of Kaposi’s sarcoma in AIDS patients. In Europe, we held marketing authorizations for Panretin^Ò gel and Targretin capsules and marketed these products under arrangements with local distributors.

As further discussed below under “Recent Developments,” on September 7, 2006, we announced the sale of ONTAK, Targretin capsules, Targretin gel, and Panretin to Eisai, Inc. (“Eisai”) and the sale of AVINZA to King Pharmaceuticals, Inc. (“King”). The Eisai sales transaction subsequently closed on October 25, 2006. Accordingly, the results for the Oncology business have been presented in our condensed consolidated statements of operations and cash flows for the three and nine months ended September 30, 2006 and 2005 as “Discontinued Operations”. Likewise, assets and liabilities related to the operations sold to Eisai have been presented in our condensed consolidated balance sheet as of September 30, 2006 as “assets held for sale” and “liabilities related to assets held

for sale”. The AVINZA sale transaction is subject to shareholder approval. Accordingly, results of operations for the AVINZA product are included in the continuing operations of the Company.

In February 2003, we entered into an agreement for the co-promotion of AVINZA with Organon Pharmaceuticals USA Inc. (Organon). Under the terms of the agreement, Organon committed to a specified minimum number of primary and secondary product calls delivered to certain high prescribing physicians and hospitals beginning in March 2003. Organon’s compensation through 2005 was structured as a percentage of net sales, which paid Organon for their efforts and also provided Organon an economic incentive for performance and results. In exchange, we paid Organon a percentage of AVINZA net sales based on the following schedule:


	% of Incremental Net Sales
Annual Net Sales of AVINZA	Paid to Organon by Ligand
$0-150 million	30% (0% for 2003)
$150-300 million		40	%
$300-425 million		50	%
> $425 million		45	%

In January 2006, we signed an agreement with Organon that terminated the AVINZA co-promotion agreement between the two companies and returned AVINZA rights to Ligand. The effective date of the termination agreement is January 1, 2006; however, the parties agreed to continue to cooperate during a transition period that ended September 30, 2006 (the “Transition Period”) to promote the product. The Transition Period co-operation included a minimum number of product sales calls per quarter (100,000 for Organon and 30,000 for Ligand with an aggregate of 375,000 and 90,000, respectively, for the Transition Period) as well as the transition of ongoing promotions, managed care contracts, clinical trials and key opinion leader relationships to Ligand. During the Transition Period, we were responsible for paying Organon an amount equal to 23% of AVINZA net sales as reported. We were also responsible for the design and execution of all AVINZA clinical, advertising and promotion expenses and activities.

Additionally, in consideration of the early termination and return of co-promotion rights under the terms of the agreement, we agreed to unconditionally pay Organon $37.8 million on or before October 15, 2006. We will further pay Organon $10.0 million on or before January 15, 2007, provided that Organon has made its minimum required level of sales calls. Under certain conditions, including closing the planned sale of AVINZA to King, as further discussed below, the $10.0 million cash payment will accelerate. In addition, after the termination, we agreed to make quarterly payments to Organon equal to 6.5% of AVINZA net sales through December 31, 2012 and thereafter 6.0% through patent expiration, currently anticipated to be November 2017.

termination charges in the period such changes are identified. Any such changes could be material and potentially result in adjustments to our consolidated statement of operations that are inconsistent with the underlying trend in net AVINZA product sales.

In June 2006, we concluded the research phase of a research and development collaboration with TAP Pharmaceutical Products Inc. (“TAP”). Collaborations in the development phase are being pursued by Eli Lilly and Company, GlaxoSmithKline, Pfizer, TAP, and Wyeth. We receive funding during the research phase of the arrangements and milestone and royalty payments as products are developed and marketed by our corporate partners. In addition, in connection with some of these collaborations, we received non-refundable up-front payments.

We have been unprofitable since our inception on an annual basis. We achieved quarterly net income of $17.3 million during the fourth quarter of fiscal 2004, which was primarily the result of recognizing approximately $31.3 million from the sale of royalty rights to Royalty Pharma. However, we have incurred a net loss in each of the subsequent quarters including the three months ended September 30, 2006, for which we incurred a net loss of $14.9 million. We expect to incur net losses in the future. To be profitable, we must successfully develop, clinically test, market and sell our products. Even if we achieve profitability, we cannot predict the level of that profitability or whether we will be able to sustain profitability. We expect that our operating results will fluctuate from period to period as a result of differences in the timing of revenues, expenses incurred, collaborative arrangements and other sources. Some of these fluctuations may be significant.

Recent Developments

Sale of Oncology Product Line

On September 7, 2006, the Company, Eisai Inc., a Delaware corporation and Eisai Co., Ltd., a Japanese company (together with Eisai Inc., “Eisai”), entered into a purchase agreement (the “Oncology Purchase Agreement”) pursuant to which Eisai agreed to acquire all of our worldwide rights in and to our oncology products, including, among other things, all related inventory, equipment, records and intellectual property, and assume certain liabilities (together “Oncology” or the “Oncology Product Line”) as set forth in the Oncology Purchase Agreement. The Oncology Product Line includes the Company’s four marketed oncology drugs: ONTAK, Targretin capsules, Targretin gel and Panretin gel. Pursuant to the Oncology Purchase Agreement, at closing on October 25, 2006, we received approximately $205.0 million in cash and Eisai assumed certain liabilities. As of the closing date, we were also required to transfer manufactured product to Eisai of at least $9.8 million. To the extent the actual inventory amount is less than $9.8 million, the Oncology Purchase Agreement provides for a corresponding decrease to the purchase price. We believe that oncology inventory on October 25, 2006 exceeded $9.8 million. Until Eisai agrees with the determination of the amount transferred, however, there can be no assurance that the final purchase price will not be adjusted. Of the $205.0 million, $20.0 million was funded into an escrow account to support any indemnification claims made by Eisai following the closing of the sale.

In addition, and as a condition of the $37.8 million loan received from King Pharmaceuticals, Inc. (“King”) in connection with the proposed sale of AVINZA to King (as discussed below), $38.6 million of the funds received from Eisai was deposited into a restricted account to be used to repay the loan plus interest, due January 1, 2007. If the transaction with King closes as contemplated by the AVINZA Purchase Agreement, the interest will be forgiven and the principal will be credited against the purchase price.

After closing of the Oncology purchase, we will receive no further direct cash flows related to the oncology products. We have, however, in connection with the Oncology Purchase Agreement with Eisai, entered into a transition services agreement with Eisai whereby we will perform certain transition services for Eisai, in order to effect, as rapidly as practicable, the transition of purchased assets from us to Eisai. In exchange for these services, Eisai will pay us a monthly service fee. The term of the transition services provided is generally three months, however, certain services will be provided for a period of up to eight months.

Sale of AVINZA Product

On September 6, 2006, we entered into a purchase agreement (the “AVINZA Purchase Agreement”) with King, pursuant to which King agreed to acquire all of our rights in and to AVINZA in the United States, its territories and Canada, including, among other things, all AVINZA inventory, equipment, records and related intellectual property, and assume certain liabilities as set forth in the AVINZA Purchase Agreement. In addition, King has, subject to the terms and conditions of the AVINZA Purchase Agreement, agreed to offer employment following the closing of the transaction (the “Closing”) to certain of our existing AVINZA sales representatives or otherwise reimburse us for agreed upon severance arrangements offered to any such non-hired representatives.

Pursuant to the AVINZA Purchase Agreement, at Closing, we will be paid a $265.0 million cash payment, $15.0 million of which will be funded into an escrow account to support any indemnification claims made by King following the Closing and King will assume certain liabilities, including product-related liabilities owed by us to Organon of approximately $47.8 million and all other existing product royalty obligations including the ongoing co-promote termination obligation to Organon ($105.2 million as of September 30, 2006). The Closing payment is subject to adjustment based on our ability to reduce wholesale and retail inventory levels of AVINZA to certain targeted levels by Closing in accordance with the AVINZA Purchase Agreement.

In addition to the assumption of existing royalty obligations, King will pay us a 15% royalty on AVINZA net sales during the first 20 months after Closing. Subsequent royalty payments will be based upon calendar year net sales. If calendar year net sales are less than $200 million, the royalty payment will be 5% of all net sales. If calendar year net sales are greater than $200 million, the royalty payments will be 10% of all net sales less than $250 million, plus 15% of net sales greater than $250 million.

In connection with the transaction, King committed to loan us, at our option, $37.8 million (the “Loan”) to be used to pay our co-promote termination obligation to Organon due October 15, 2006. This loan was drawn, and the $37.8 million co-promote liability settled in October 2006. Amounts due under the loan are subject to certain market terms, including a 9.5% interest rate. In addition, and as a condition of the $37.8 million loan received from King, $38.6 million of the funds received from Eisai was deposited into a restricted account to be used to repay the loan to King, plus interest, due January 1, 2007. If the transaction with King closes as contemplated by the AVINZA Purchase Agreement, the interest and principal will be forgiven.

The AVINZA Purchase Agreement may be terminated by either King or us if the Closing has not occurred by December 31, 2006, or upon the occurrence of certain customary matters. In addition, if the AVINZA Purchase Agreement is terminated under certain circumstances, including a determination by our Board of Directors to accept an acquisition proposal it deems superior, we have agreed to pay King a termination fee of $12.0 million. The Closing is subject to certain closing conditions, including, but not limited to, Ligand stockholder approval of the transaction, the conversion or redemption prior to Closing of all of our outstanding 6% Convertible Subordinated Notes due 2007, the expiration or early termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, or HSR, and certain other customary closing conditions. Early termination of the waiting period under HSR occurred on October 5, 2006.

Also on September 6, 2006, we entered into a contract sales force agreement (the “Sales Agreement”) with King, pursuant to which King agreed to conduct a sales detailing program to promote the sale of AVINZA for an agreed upon fee, subject to the terms and conditions of the Sales Agreement. Pursuant to the Sales Agreement, King agreed to perform certain minimum monthly product details (i.e. sales calls), which commenced effective October 1, 2006 and will continue for a period of six months following such date or until the Closing or earlier termination of the AVINZA Purchase Agreement. We estimate that, assuming the Closing were to occur at the end of December 2006, the amount due to King under the Sales Agreement would be approximately $4.0 million.

Sale and Leaseback of Premises

On October 25, 2006, we, along with our wholly-owned subsidiary Nexus Equity VI, LLC (“Nexus”) entered into an agreement with Slough Estates USA, Inc. (“Slough”) for the sale of our real property located in San Diego, California for a purchase price of approximately $47.6 million. This property, with a net book value of

approximately $14.5 million, includes one building totaling approximately 82,500 square feet, the land on which the building is situated, and two adjacent vacant lots. As part of the sale transaction, we agreed to leaseback the building for a period of 15 years, as further described below. In connection with the sale transaction, on November 6, 2006, we paid off the existing mortgage on the building of approximately $11.6 million. The early payment triggered a prepayment penalty of approximately $0.4 million. The sale transaction subsequently closed on November 9, 2006.

Under the terms of the lease, we will pay a basic annual rent of $3.0 million (subject to an annual fixed percentage increase, as set forth in the agreement), plus a 1% annual management fee, property taxes and other normal and necessary expenses associated with the lease such as utilities, repairs and maintenance, etc. We will have the right to extend the lease for two five-year terms and will have the first right of refusal to lease, at market rates, any facilities built on the sold lots.

In accordance with SFAS 13, Accounting for Leases, we expect to recognize an immediate pre-tax gain on the sale transaction of approximately $2.9 million and defer a gain of approximately $29.5 million on the sale of the building. The deferred gain will be recognized on a straight-line basis over the 15 year term of the lease at a rate of approximately $2.0 million per year.

Termination of Organon Co-promotion Agreement

As further discussed under “Overview” above, in January 2006, we signed an agreement with Organon that terminates the AVINZA co-promotion agreement between the two companies and returns AVINZA rights to Ligand.

Accounting for Stock-Based Compensation

Effective January 1, 2006, we adopted SFAS 123 (revised 2004), Share-Based Payment (“SFAS 123(R)”), using the modified prospective transition method. No stock-based employee compensation cost was recognized prior to January 1, 2006, as all options granted prior to 2006 had an exercise price equal to the market value of the underlying common stock on the date of the grant. Under the modified prospective transition method, compensation cost recognized in 2006 includes: (a) compensation cost for all share-based payments granted prior to, but not yet vested as of January 1, 2006, based on the grant date fair value estimated in accordance with the original provisions of SFAS 123, and (b) compensation cost for all share-based payments granted in the nine months ended September 30, 2006, based on grant-date fair value estimated in accordance with the provisions of SFAS 123(R). Results for the three and nine months ended September 30, 2005 have not been retrospectively adjusted. The implementation of SFAS 123(R) resulted in employee compensation expense of approximately $2.0 million and $4.0 million for the three and nine months ended September 30, 2006.

Employee Retention Agreements and Severance Arrangements

In March 2006, we entered into letter agreements with approximately 67 of our key employees, including a number of our executive officers. In September 2006, we entered into letter agreements with ten additional employees and modified existing agreements with two employees. These letter agreements provide for certain retention or stay bonus payments to be paid in cash under specified circumstances as an additional incentive to remain employed in good standing with the Company. The Compensation Committee of the Board of Directors has approved the Company’s entry into these agreements. The retention or stay bonus payments generally vest at the end of 2006 and total payments to employees of approximately $3.0 million would be made in January 2007 if all participants qualify for the payments. In accordance with the SFAS 146, Accounting for Costs Associated with Exit or Disposal Activities, the cost of the plan is ratably accrued over the term of the agreements. For the three and nine months ended September 30, 2006, we recognized approximately $1.0 million and $2.1 million, respectively, of expense under the plan. As an additional retention incentive, certain employees were also granted stock options totaling approximately 122,000 shares at an exercise price of $11.90 per share.

In August 2006 and October 2006, the Company’s Compensation Committee approved and ratified, and began entering into additional severance agreements with certain of our officers and executive officers as additional retention incentives and to provide severance benefits to these officers that are more closely equivalent to severance benefits already in place for other executive officers.

These additional agreements consist of (a) change of control severance agreements (“Change of Control Severance Agreement”) and b) “ordinary” severance agreements that apply regardless of a change of control (“Ordinary Severance Agreement”). Each Change of Control Severance Agreement provides for a payment of certain benefits to the officer in the event their employment is terminated without cause in connection with a change of control of the Company.

These benefits include one year of salary, plus the average bonus (if any) for the prior two years and payment of health care premiums for one year. With certain exceptions, the officer must be available for consulting services for one year and must abide by certain restrictive covenants, including non-competition and non-solicitation of our employees. Each Ordinary Severance Agreement provides for payment of six months salary in the event the officer’s employment is terminated without cause, regardless of change of control.

Additionally, in October 2006, we implemented a 2006 Employee Severance Plan for those employees who were not covered by another severance arrangement. The plan provides that if such an employee is involuntarily terminated without cause, and not offered a similar or better job by one of the purchasers of our product lines (i.e. King or Eisai) such employee will be eligible for severance benefits. The benefits consist of two months’ salary, plus one week of salary for every full year of service with the Company plus payment of COBRA health care coverage premiums for that same period.

Conversion/Redemption of 6% Convertible Subordinated Notes

On October 30, 2006, we gave notice of redemption to the noteholders of our 6% convertible subordinated notes due November 2007. The redemption date of the notes has been set for November 29, 2006. The noteholders may elect to convert the 6% notes, on or before November 29, 2006, into shares of our common stock at a conversion rate of 161.9905 shares per $1,000 principal amount of the notes (approximately $6.17 per share). Based on our current stock price, we expect that the majority of the notes will be converted into shares of Ligand common stock. The $128.2 million of principal amount of the notes outstanding may be converted into approximately 20.8 million shares of common stock. We will pay the holders of those notes that are not converted into shares a redemption price equal to 101.2% of the outstanding principal amount plus accrued and unpaid interest.

Lilly Collaboration Update

In May 2006, after review of all preclinical and clinical data including recently completed two year animal safety studies, Lilly informed us that it had decided not to pursue further development at this time of LY818 (“Naveglitazar”), a compound in Phase II development for the treatment of Type II diabetes. Naveglitazar, a dual PPAR agonist, was developed through our collaborative research and development agreement with Lilly. This decision is specific with regard to Naveglitazar.

In September 2006, Lilly informed us that it had suspended an ongoing mid-stage human trial of LY674 in order to assess unexpected findings noted during animal safety studies of the same compound and evaluate collective clinical efficacy and safety from the human data already gathered. LY674, a PPAR alpha agonist compound in Phase II development for the treatment of atherosclerosis, was developed through our collaborative research and development agreement with Lilly. This decision is specific with regard to LY674.

Agreements to Settle Securities Class Action and Derivative Lawsuits

On June 29, 2006, we announced that we reached agreement to settle the securities class action litigation filed in the United States District Court for the Southern District of California against us and certain of our directors and officers. In addition, we also reached agreement to settle the shareholder derivative actions filed on behalf of the Company in the Superior Court of California and the United States District Court for the Southern District of California.

The settlements resolve all claims by the parties, including those asserted against Ligand and the individual defendants in these cases. Under the agreements, we agreed to pay a total of $12.2 million in cash in full settlement of all claims. $12.0 million of the settlement amount and a portion of our total legal expenses was funded by our Directors and Officers Liability insurance carrier while the remainder of the legal fees incurred ($1.4 million for the

three months ended June 30, 2006) was paid by us. Of the $12.2 million settlement liability, $4.0 million was paid in October 2006 to us directly from the insurance carrier and then disbursed to the claimants’ attorneys, while $8.0 million will be paid by the insurance carrier directly to an independent escrow agent responsible for disbursing the funds to the class action suit claimants. In July 2006, our insurance carrier funded the escrow account with the $8.0 million to be disbursed to the claimants. Under SFAS No. 140, Accounting for Transfers and Servicing of Financial Assets and Extinguishments of Liabilities, funding of the escrow account represents the extinguishment of our liability to the claimants. Accordingly, we derecognized the $8.0 million receivable and accrued liability in our consolidated financial statements as of September 30, 2006. As part of the settlement of the state derivative action, we have agreed to adopt certain corporate governance enhancements including the formalization of certain Board practices and responsibilities, a Board self-evaluation process, Board and Board Committee term limits (with gradual phase-in) and one-time enhanced independent requirements for a single director to succeed the current shareholder representatives on the Board. Neither we nor any of our current or former directors and officers has made any admission of liability or wrongdoing. On October 12, 2006, the Superior Court of California approved the settlement of the state derivative actions and entered final judgment of dismissal. The United States District Court has preliminarily approved the settlement of the Federal class action, however, that settlement and the settlement of the Federal derivative actions are all subject to final approval and orders of the court.

The related investigation by the Securities and Exchange Commission is ongoing and is not affected by the settlements discussed above.

Resignation of CEO and Appointment of New Interim CEO

On July 31, 2006, we entered into a separation agreement with David Robinson providing for Mr. Robinson’s resignation as Chairman, President, and Chief Executive Officer of the Company. Under the separation agreement, Mr. Robinson will receive his base salary and certain benefits for 24 months, payable in five equal monthly installments beginning August 1, 2006 and ending December 1, 2006. In addition, the agreement provides for the immediate vesting of Mr. Robinson’s unvested stock options and an extension of the exercise period of his options to January 15, 2007. In connection with the resignation, we recognized expense of approximately $1.9 million for the three months ended September 30, 2006 comprised of cash payments of $1.4 million and stock-based compensation of $0.5 million associated with the modification of the vesting and exercise period of the stock options.

On August 1, 2006, we announced that current director Henry F. Blissenbach had been named Chairman and interim Chief Executive Officer. We have agreed to pay Dr. Blissenbach $40,000 per month, commencing August 1, 2006, subject to cancellation by either party on thirty days’ notice, for his services as Chairman and interim Chief Executive Officer. In addition, Dr. Blissenbach will be eligible to receive incentive compensation of up to 50% of his base salary, but not more than $100,000, based upon his performance of certain objectives incorporated within the employment agreement which we and Dr. Blissenbach have entered into. Also, Dr. Blissenbach received a stock option grant to purchase 150,000 shares of our common stock at an exercise price of $9.20 per share. These stock options will vest 50% at the end of six months and the remaining 50% will vest at the end of one year, except that all of these stock options will vest upon the appointment of a new chief executive officer. Finally, we will reimburse Dr. Blissenbach for all reasonable expenses incurred in discharging his duties as interim Chief Executive Officer, including, but not limited to commuting costs to San Diego and living and related costs during the time he spends in San Diego.

Salk Royalty Buyout

In August 2006, we paid the Salk Institute $0.8 million to exercise an option to buy out milestone payments, other payment sharing obligations and royalty payments due on future sales of bazedoxifene, a product being developed by Wyeth. This payment resulted from a bazedoxifene new drug application (“NDA”) filed by Wyeth for postmenopausal osteoporosis therapy. We recognized the $0.8 million payment as development expense in our third quarter 2006 consolidated financial statements.

Results of Continuing Operations

Total revenues from continuing operations for the three and nine months ended September 30, 2006 were $36.7 million and $106.8 million compared to $32.0 million and $87.3 million, respectively, for the same 2005 periods. Operating loss from continuing operations was $15.1 million and $173.7 million for the three and nine months ended September 30, 2006 compared to $4.6 million and $20.1 million, respectively, for the same 2005 periods. Loss from continuing operations for the three and nine months ended September 30, 2006 was $16.1 million ($0.21 per share) and $176.5 million ($2.26 per share) compared to $7.3 million ($0.10 per share) and $27.8 million ($0.38 per share) for the same 2005 periods.

Product Sales

Our product sales for any individual period can be influenced by a number of factors including changes in demand, competitive products, the timing of announced price increases, and the level of prescriptions subject to rebates and chargebacks. Additionally, AVINZA is included on the formularies (or lists of approved and reimbursable drugs) of many states’ health care plans, as well as the formulary for certain Federal government agencies. In order to be placed on these formularies, we generally sign contracts which provide discounts to the purchaser off the then-current list price and limit how much of an annual price increase we can implement on sales to these groups. As a result, the discounts off list price for these groups can be significant for products where we have implemented list price increases. We monitor the portion of our sales subject to these discounts, and accrue for the cost of these discounts at the time of the recognition of product sales. We believe that by being included on these formularies, we will gain better physician acceptance, which will then result in greater overall usage of our products. If the relative percentage of our sales subject to these discounts increases materially in any period, our sales and gross margin could be substantially lower than historical levels.

Net Product Sales

Our AVINZA product sales are determined on a sell-through basis less allowances for rebates, chargebacks, discounts, and losses to be incurred on returns from wholesalers resulting from increases in the selling price of our products. In addition, we incur certain distributor service agreement fees related to the management of our product by wholesalers. These fees have been recorded within net product sales.

Sales of AVINZA were $36.7 million and $102.9 million for the three and nine months ended September 30, 2006 compared to $29.9 million and $79.4 million, respectively, for the same 2005 periods. According to IMS data, quarterly prescription market share of AVINZA for the three months ended September 30, 2006 was 3.7% compared to 4.5% for the same 2005 period.

The increase in sales for the three and nine months ended September 30, 2006 reflects the impact of a 7% price increase effective April 1, 2005, as well as a shift in the mix of prescriptions to the higher doses of AVINZA. Net sales for the three and nine months ended September 30, 2006 also benefited from the release of a $1.5 million accrual previously recorded for billings received from the Department of Veteran Affairs under the Department of Defense’s TriCare Retail Pharmacy refund program. In September 2006, the U.S. Court of Appeals for the Federal Circuit struck down the TriCare program. The increase in AVINZA net sales for the three and nine months ended September 30, 2006 further reflects a reduction in Medicaid rebates of approximately $4.3 million and $11.2 million, respectively. This reduction was partially offset by an increase in managed care rebates of approximately $1.0 million for the nine months ended September 30, 2006 under contracts with pharmacy benefit managers (“PBMs”), group purchasing organizations (“GPOs”), and health maintenance organizations (“HMOs”), and under Medicare Part D.

The increases in AVINZA net sales for the 2006 periods was partially offset by decreases in prescriptions. Specifically, net sales for the nine months ended September 30, 2006 reflect an approximate 2% decrease in prescriptions compared to the prior year period while prescriptions for the three months ended September 30, 2006 experienced an 8% decrease compared to the three months ended September 30, 2005. Additionally, prescriptions for the three months ended September 30, 2006 were 3% lower compared to the three months ended June 30, 2006. These trends reflect a continuing decrease in prescriptions under Medicaid contracts as marginal Medicaid contracts are terminated, partially offset by increases in prescriptions under managed care contracts and Medicare Part D. We

also believe that the decrease in prescriptions is due in part to a lower level of co-promote activity in the third quarter of 2006, as our co-promotion arrangement with Organon reached its conclusion effective September 30, 2006.

AVINZA net sales for the nine months ended September 30, 2006 also reflect an approximate charge of $2.1 million for losses expected to be incurred on product returns resulting from a 6% price increase effective July 1, 2006. This compares to a charge of $3.5 million recorded for the three months ended March 31, 2005 in connection with a 7% AVINZA price increase effective April 1, 2005. Upon an announced price increase, we revalue our estimate of deferred product revenue to be returned to recognize the potential higher credit a wholesaler may take upon product return determined as the difference between the new price and the previous price used to value the allowance. The decrease in the charge for the 2006 period reflects lower rates of return on lots that closed out in 2006, thereby lowering the historical weighted average rate of return used for estimating the allowance for return losses. AVINZA net sales for the three and nine months ended September 30, 2006, also benefited from a reduction in the existing allowance for return losses of $0.5 million and $3.5 million, respectively, due to the lower rates of return on lots that closed in 2006.

Any changes to our estimates for Medicaid prescription activity or prescriptions written under our managed care contracts may have an impact on our rebate liability and a corresponding impact on AVINZA net product sales. For example, a 20% variance to our estimated Medicaid and managed care contract rebate accruals for AVINZA as of September 30, 2006 could result in adjustments to our Medicaid and managed care contract rebate accruals and net product sales of approximately $0.1 million and $0.8 million, respectively.

As discussed under “Recent Developments”, we entered into an agreement to sell the AVINZA product to King following Ligand shareholder approval. In connection with that agreement, the Company entered into a Contract Sales Force Agreement (the “Sales Agreement”) with King, pursuant to which King agreed to conduct a detailing program to promote the sale of AVINZA for an agreed upon fee, subject to the terms and conditions of the Sales Agreement. Pursuant to the Sales Agreement, King agreed to perform certain minimum monthly product details (i.e. sales calls), which commenced effective October 1, 2006 and will continue for a period of six months following such date or until the closing or earlier termination of the purchase agreement. We estimate that, assuming the Closing were to occur at the end of December 2006, the amount due to King under the Sales Agreement would be approximately $4.0 million.

Collaborative Research and Development and Other Revenue

We earned no collaborative research and development and other revenues for the three months ended September 30, 2006, compared to $2.1 million for the same 2005 period. For the nine months ended September 30, 2006, collaborative research and development and other revenues were $4.0 million, compared to $7.9 million for the same 2005 period. Collaborative research and development and other revenues include reimbursement for ongoing research activities, earned development milestones, and recognition of prior years’ up-front fees previously deferred in accordance with Staff Accounting Bulletin (“SAB”) No. 101“Revenue Recognition”, as amended by SAB 104. Revenue from distribution agreements includes recognition of up-front fees collected upon contract signing and deferred over the life of the distribution arrangement and milestones achieved under such agreements.

A comparison of collaborative research and development and other revenues is as follows (in thousands):


	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2006		2005		2006		2005
Collaborative research and development	$	—	$	894	$	1,678	$	2,618
Development milestones and other	—		1,201		2,299		5,326
	$	—	$	2,095	$	3,977	$	7,944

Collaborative Research and Development

The decrease in collaborative research and development revenue for the three and nine months ended September 30, 2006 compared to the prior year periods is due to the completion of the research phase of our collaborative arrangement with TAP, which concluded in June 2006.

Development milestones and other

Development milestones for the nine months ended September 30, 2006 period reflect a milestone of $2.0 million earned in the three months ended March 31, 2006 from GlaxoSmithKline in connection with the commencement of Phase III studies of eltrombopag and a $0.3 million milestone earned in the three months ended June 30, 2006 from Wyeth in connection with the filing of an NDA for bazedoxifene. This compares to milestones earned in the nine months ended September 30, 2005 of $3.0 million from GlaxoSmithKline, $1.2 million from Lilly and $1.1 million from TAP.

Gross Margin

Gross margin on product sales was 84.2% for the three months ended September 30, 2006 compared to 78.5% for the same 2005 period. For the nine months ended September 30, 2006, gross margin on product sales was 83.7% compared to 77.3% for the same 2005 period. The improvement in the gross margin percentages for the 2006 periods reflects the impact of a 7% price increase effective April 1, 2005. Under the sell-through revenue recognition method, changes to prices do not impact net product sales and therefore gross margins until the product sells through the distribution channel. Accordingly, the price increases did not have a full period impact on the margins for the three and nine months ended September 30, 2005. Additionally, as further discussed above under “Net Product Sales”, net sales and therefore the gross margin percentage benefited from: 1) the impact of lower Medicaid rebates; 2) lower net charges related to the impact of price increases on expected returns; and 3) the release of an accrual in the third quarter of 2006 related to a court ruling by the U.S. Court of Appeals against the Department of Defense’s TriCare Retail Pharmacy refund program.

Furthermore, cost of sales in terms of absolute dollars decreased in the 2006 periods compared to the 2005 periods due primarily to a decrease in the number of prescriptions of 8% and 2% for the three and nine months ended September 30, 2006 relative to the prior year periods.

Research and Development Expenses

Research and development expenses were $10.5 million and $29.0 million, respectively, for the three and nine months ended September 30, 2006 compared to $7.9 million and $23.8 million for the same 2005 periods. The major components of research and development expenses are as follows (in thousands):


	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2006		2005		2006		2005
*Research*
Research performed under collaboration agreements	$	—	$	816	$	1,968	$	2,777
Internal research programs		5,631		5,133		15,522		15,498

Total research		5,631		5,949		17,490		18,275


*Development*
New product development		3,709		53		8,610		746
Existing product support (1)		1,128		1,918		2,913		4,766

Total development		4,837		1,971		11,523		5,512


Total research and development	$	10,468	$	7,920	$	29,013	$	23,787


(1)		Includes costs incurred to comply with post-marketing regulatory commitments.

Spending for research expenses was $5.6 million and $17.5 million, respectively, for the three and nine months ended September 30, 2006 compared to $5.9 million and $18.3 million for the same 2005 periods. The decrease in research expenses for the three and nine months ended September 30, 2006 compared to the same 2005 periods

primarily reflects decreased research expenses incurred under our collaboration arrangement with TAP which concluded in June 2006.

Spending for development expenses increased to $4.8 million and $11.5 million, respectively, for the three and nine months ended September 30, 2006 compared to $2.0 million and $5.5 million for the same 2005 periods. These increases reflect a higher level of expense for new product development partially offset by a lower level of expense in existing product support. The increase in spending on new product development was primarily due to the increase in LGD4665 thrombopoietin (TPO) and LGD5552 (Glucocorticoid agonist) expenses as our lead drug candidates in these areas were moved to IND track. The decreases in the 2006 periods for existing product support are due to lower product support for our AVINZA product.

A summary of our significant internal research and development programs for continuing operations is as follows:


Program	Disease/Indication	Development Phase
AVINZA	Chronic, moderate-to-severe pain	Marketed in U.S. Phase IV

LGD4665 (Thrombopoietin oral mimic)	Idiopathic Thrombocytopenia (“ITP”), other Thrombocytopenias	IND Track

LGD5552 (Glucocorticoid agonists)	Inflammation, cancer	IND Track

Selective androgen receptor modulators, e.g., LGD3303 (agonist/antagonist)	Male hypogonadism, female & male osteoporosis, male & female sexual dysfunction, frailty. Prostate cancer, hirsutism, acne, androgenetic alopecia.	Pre-clinical

We do not provide forward-looking estimates of costs and time to complete our ongoing research and development projects, as such estimates would involve a high degree of uncertainty. Uncertainties include our ability to predict the outcome of complex research, our ability to predict the results of clinical studies, regulatory requirements placed upon us by regulatory authorities such as the FDA and EMEA, our ability to predict the decisions of our collaborative partners, our ability to fund research and development programs, competition from other entities of which we may become aware in future periods, predictions of market potential from products that may be derived from our research and development efforts, and our ability to recruit and retain personnel or third-party research organizations with the necessary knowledge and skills to perform certain research. Refer to “Risk Factors” below for additional discussion of the uncertainties surrounding our research and development initiatives.

Selling, General and Administrative Expense

Selling, general and administrative expense was $20.1 million and $58.1 million, respectively, for the three and nine months ended September 30, 2006 compared to $14.5 million and $43.1 million for the same 2005 periods. The increase is due primarily to legal costs (incurred in connection with the ongoing SEC investigation, shareholder litigation and our strategic alternatives process) which increased by approximately $2.0 million and $6.0 million for the three and nine months ended September 30, 2006 compared to the prior year periods. In June 2006, we announced that we had reached a settlement with the plaintiffs in the Company’s shareholder litigation. The amounts to be paid to the plaintiffs and the plaintiffs’ attorneys and a portion of our legal expenses incurred in connection with the shareholder litigation were covered by proceeds provided under our Directors and Officers (D&O) Liability insurance.

General and administrative expenses were also higher for the three and nine months ended September 30, 2006 due to higher audit and consultant fees in connection with the completion of the Company’s assessment of internal controls as of December 31, 2005 under the Sarbanes-Oxley Act and consultant costs incurred in the second and third quarters of 2006 in connection with our 2006 SOX compliance program. A significant portion of the

Company’s 2005 assessment of internal controls was performed in 2006 due to the fact that the restatement of our financial statements was not completed until late 2005.

In addition, general and administrative expenses for the three months ended September 30, 2006 include expenses of approximately $1.6 million for investment banker fees related to the oncology product sale transaction with Eisai and the AVINZA product sale transaction with King, as well as approximately $1.9 million of expenses in connection with the resignation of the Company’s CEO. (Refer to “Recent Developments” above).

In addition, AVINZA advertising and promotion expenses increased in the three and nine months ended September 30, 2006 compared to the prior year periods when Ligand and Organon shared equally all AVINZA promotion expenses. As part of the AVINZA termination and return of rights agreement entered into in January 2006, discussed under “Overview” above, we are now responsible for all AVINZA advertising and promotion expenses. This increase was partially offset by lower selling expenses due to a reduction in our AVINZA primary care sales force.

We expect selling, general and administrative expenses to continue to be higher through the remainder of 2006 compared to the prior year due to the ongoing cost of compliance with the Sarbanes-Oxley Act, legal and consultant expenses in connection with the SEC investigation and strategic alternatives process and the expenses to be recognized in connection with the employee retention agreements discussed under “Recent Developments” above. These increases are expected to be partially offset by lower sales force expenses as a result of the reduction in our AVINZA primary care sales force.

Co-promotion Expense and Co-promote Termination Charges

Co-promotion expense due Organon amounted to $11.8 million and $33.7 million, respectively, for the three and nine months ended September 30, 2006 compared to $7.8 million and $22.5 million for the same 2005 periods. As discussed under “Overview” above, in connection with the AVINZA termination and return of co-promote rights agreement with Organon, we agreed to pay Organon 23% of net AVINZA product sales through September 30, 2006 as compensation for promotion of the product during the Transition Period. This compares to co-promote expense in the prior year period which was based on 30% of net sales, as per the original co-promotion agreement, determined using the sell-in method of revenue recognition.

Co-promotion expense for the three and nine months ended September 30, 2006 also includes $3.3 million and $10.0 million, respectively, which represents the pro-rata accrual of a $10.0 million payment we agreed to make to Organon, provided that Organon achieves its required level of sales calls during the Transition Period. This payment represents an approximation of the fair value of the service element under the agreement during the Transition Period (when the provision to pay 23% of AVINZA net sales is also considered) and, therefore, is recognized as an additional component of co-promotion expense ratably over the Transition Period.

Co-promote termination charges recognized for the three and nine months ended September 30, 2006 were $3.6 million and $143.0 million, respectively. The expense for the nine months ended September 30, 2006 includes a $37.8 million payment we agreed to make to Organon in October 2006 and the fair value of subsequent quarterly payments, estimated at approximately $95.2 million as of January 1, 2006, that we will make to Organon based on net product sales of AVINZA, through November 2017. The co-promote termination charge for the three and nine months ended September 30, 2006 also includes expense of approximately $3.6 million and $10.4 million, respectively, to reflect the fair value of the liability as of September 30, 2006. Note that for the three month periods ended March 31, 2006 and June 30, 2006, this adjustment was presented as a component of interest expense. For the nine months ended September 30, 2006, such amounts previously reported as interest expense were properly reclassified to “co-promote termination charges” in accordance with SFAS 146, Accounting for Costs Associated with Exit or Disposal Activities.

In connection with the planned sale of AVINZA to King, as further discussed under “Recent Developments”, King will assume responsibility for the $37.8 million paid to Organon in October 2006 and the royalty obligation to make payments to Organon based on AVINZA net product sales.

Interest Expense

Interest expense was $2.5 million and $7.9 million for the three and nine months ended September 30, 2006, respectively, compared to $3.1 million and $9.2 million for the same 2005 periods. A comparison of interest expense is as follows (in thousands):


	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2006		2005		2006		2005
Interest on 6% Convertible Subordinated Notes	$	1,922	$	2,329	$	5,857	$	6,987
Other interest		625		789		2,063		2,260

Total	$	2,547	$	3,118	$	7,920	$	9,247

The lower interest expense on the 6% Convertible Subordinated Notes is due to the conversion of a portion of such notes during the six months ended June 30, 2006 as discussed further under “Recent Developments.” There were no conversions during the three months ended September 30, 2006.

In connection with the planned sale of AVINZA to King, we are required to redeem or convert to common stock the outstanding 6% convertible subordinated notes, which is expected to occur on or before November 29, 2006. Accordingly, we expect interest expense on the notes to be lower in the fourth quarter of 2006 compared to prior period quarters. If the notes are redeemed, however, we will record a charge related to the premium to be paid upon redemption of approximately $1.5 million.

Discontinued Operations

Income from discontinued operations was $1.2 million and $3.4 million for the three and nine months ended September 30, 2006, respectively, compared to $1.0 million for the three months ended September 30, 2005 and a loss from discontinued operations of $5.9 million for the nine months ended September 30, 2005. The following table summarizes results from discontinued operations for the three and nine months ended September 30, 2006 and 2005 included in the condensed consolidated statements of operations (in thousands):


	Three Months						Nine Months
	Ended September 30,						Ended September 30,
	2006			2005			2006			2005
	(unaudited)
Product sales	$	13,292		$	12,676		$	42,457		$	39,997
Collaborative research and development and other revenues		75			77			188			232

Total revenues		13,367			12,753			42,645			40,229

Operating costs and expenses:
Cost of products sold		3,410			3,385			12,448			13,552
Research and development		4,166			4,991			11,734			18,383
Selling, general and administrative		3,722			3,303			12,688			14,018

Total operating costs and expenses		11,298			11,679			36,870			45,953

Income (loss) from operations		2,069			1,074			5,775			(5,724	)
Interest expense		(1	)		(54	)		(51	)		(82	)

Income (loss) before income taxes		2,068			1,020			5,724			(5,806	)
Income tax expense		(845	)		(17	)		(2,342	)		(54	)

Net income (loss)	$	1,223		$	1,003		$	3,382		$	(5,860	)

Product sales were $13.3 million and $42.5 million for the three and nine months ended September 30, 2006 compared to $12.7 million and $40.0 million, respectively, for the same 2005 periods. The increase in product sales for each period is primarily due to increases in sales of Targretin capsules from increased demand and the effect of prices increases. These increases are partially offset by lower net product sales of ONTAK due to lower demand.

Total operating costs and expenses were $11.3 million and $36.9 million for the three and nine months ended September 30, 2006 compared to $11.7 million and $46.0 million, respectively, for the same 2005 periods. These decreases are primarily due to decreased research expenses across several Oncology research programs, decreased development expenses for existing Oncology product support (primarily a reduced level of spending on Phase III clinical trials for Targretin capsules in non-small cell lung cancer (“NSCLC”)), and lower promotion expenses for the Oncology products compared to the prior year periods.

The net loss from discontinued operations for the nine months ended September 30, 2005 reflects the significant development costs incurred on the NSCLC trials for Targretin capsules which concluded in early 2005.

Liquidity and Capital Resources

We have financed our operations through private and public offerings of our equity securities, collaborative research and development and other revenues, issuance of convertible notes, product sales, capital and operating lease transactions, accounts receivable factoring and equipment financing arrangements, and investment income.

Working capital was a deficit of $161.9 million at September 30, 2006 compared to a deficit of $102.2 million at December 31, 2005. Cash, cash equivalents, short-term investments and restricted investments totaled $33.7 million at September 30, 2006 compared to $88.8 million at December 31, 2005. We primarily invest our cash in United States government and investment grade corporate debt securities. Restricted investments consist of certificates of deposit held with a financial institution as collateral under equipment financing and third-party service provider arrangements.

Operating Activities

Operating activities used cash of $54.5 million for the nine months ended September 30, 2006 compared to $3.7 million for the same 2005 period. The use of cash for the nine months ended September 30, 2006 reflects a higher net loss including the effect of a higher adjustment for non-cash operating expenses for the 2006 period. Non-cash operating expense for the nine months ended September 30, 2006 includes the recognition of $4.0 million of stock-based compensation expense in connection with the adoption of SFAS123(R) and option grants to non-employees. The higher use of cash for the 2006 period is further impacted by changes in operating assets and liabilities due to decreases in deferred revenues, net of $50.5 million and accounts payable and accrued liabilities of $5.8 million and an increase in inventories, net of $0.5 million, partially offset by decreases in accounts receivable, net of $13.9 million and other current assets of $2.0 million. The decrease in deferred revenue and accounts receivable are primarily due to lower shipments of Avinza during the three months ended September 30, 2006. The AVINZA Purchase Agreement with King provides for a reduction in the purchase price to the extent that product inventories in the wholesale and retail distribution channels are in excess of specified amounts. Accordingly, we reduced shipments of AVINZA in the month of September 2006. We expect that shipments of AVINZA in the fourth quarter of 2006 will likewise be lower until the targeted inventory levels are achieved.

As further discussed below, the reconciliation of net loss to net cash used in operating activities for the nine months ended September 30, 2006 compared to the prior year period also reflects the accrual of the AVINZA co-promote termination liability due Organon of $143.0 million in connection with the termination and return of rights agreement entered into in January 2006. In consideration of the early termination and return of rights under the terms of the agreement, we agreed to pay Organon $37.8 million on or before October 15, 2006. We will further pay Organon $10.0 million on or before January 15, 2007, provided that Organon has made its minimum required level of sales calls. Under certain conditions, including closing of the planned sale of AVINZA to King, the $10.0 million cash payment will accelerate. In addition, after the termination, we agreed to make quarterly payments to Organon equal to 6.5% of AVINZA net sales through December 31, 2012 and thereafter 6.0% through patent expiration, currently anticipated to be November 2017. In connection with the planned AVINZA purchase by King, King will assume our outstanding obligations to Organon including reimbursing us for the $37.8 million paid to Organon in October 2006.

For the same 2005 period, use of operating cash was impacted by the changes in operating assets and liabilities primarily due to decreases in accounts receivable, net of $6.5 million and other current assets of $5.0 million and increases in deferred revenue, net of $5.5 million and accounts payable and accrued liabilities of $2.3 million, partially offset by an increase in inventories, net of $3.1 million.

The use of cash from operating activities of $54.5 million for the nine months ended September 30, 2006 includes $4.5 million used in discontinued operations. The use of cash from operating activities of $3.7 million for the nine months ended September 30, 2005 includes $3.8 million used in discontinued operations.

Investing Activities

Investing activities used cash of $2.9 million for the nine months ended September 30, 2006 compared to the use of cash of $38.8 million for the same 2005 period. The use of cash for the nine months ended September 30, 2006 primarily reflects purchases of property and equipment of $1.6 million and purchases of short-term investments of $18.3 million, partially offset by proceeds from the sale of short-term investments of $17.0 million. The use of cash for the nine months ended September 30, 2005 reflects a $33.0 million payment for the buy-down of ONTAK royalty payments in connection with the amended royalty agreement entered into in November 2004 between the Company and Lilly, $3.5 million of net purchases of short-term investments, $1.8 million of purchases of property and equipment, and a $0.6 million capitalized payment to The Salk Institute for the exercise of an option to buy out royalty payments due on future sales of lasofoxifene for a second indication.

The use of cash from investing activities of $2.9 million for the nine months ended September 30, 2006 includes $0.1 million used in discontinued operations. The use of cash from investing activities of $38.8 million for the nine months ended September 30, 2005 includes $33.0 million used in discontinued operations for the buy-down of the ONTAK royalty payments.

Financing Activities

Financing activities provided cash of $0.6 million for the nine months ended September 30, 2006 compared to the use of cash of $0.2 million for the same 2005 period. Cash provided by financing activities for the nine months ended September 30, 2006 includes proceeds from the issuance of common stock of $2.0 million (primarily from the exercise of employee stock options) partially offset by net payments under equipment financing arrangements of $1.0 million and the repayment of long-term debt of $0.3 million. Cash used in financing activities for the nine months ended September 30, 2005 includes net payments under equipment financing arrangements of $0.8 million and the repayment of long-term debt of $0.2 million, partially offset by proceeds from the exercise of employee stock options of $0.9 million. None of the changes in cash from financing activities for the nine months ended September 30, 2006 and 2005 pertain to discontinued operations.

Certain of our property and equipment is pledged as collateral under various equipment financing arrangements. As of September 30, 2006, $4.9 million was outstanding under such arrangements with $2.2 million classified as current. Our equipment financing arrangements have terms of 3 to 4 years with interest ranging from 7.35% to 10.11%.

On October 25, 2006, we, along with our wholly-owned subsidiary Nexus entered into an agreement with Slough for the sale of the Company’s real property located in San Diego, California. In connection with the sale transaction, on November 6, 2006, we paid off the existing mortgage on the building of approximately $11.6 million. The early payment triggered a prepayment penalty of approximately $0.4 million. The sale transaction subsequently closed on November 9, 2006.

On October 30, 2006, we gave notice of redemption to the noteholders of our 6% convertible subordinated notes due November 2007. The redemption date of the notes has been set for November 29, 2006. The noteholders may elect to convert the 6% notes, on or before November 29, 2006, into shares of our common stock at a conversion rate of 161.9905 shares per $1,000 principal amount of the notes (approximately $6.17 per share). Based on our current stock price, we expect that the majority of the notes will convert into shares of Ligand common stock in lieu of cash. The $128.2 million of principal amount of the notes outstanding may be converted into approximately 20.8 million shares of common stock. We will pay the holders of those notes that are not converted into shares a redemption price equal to 101.2% of the outstanding principal amount plus accrued and unpaid interest.

We believe our available cash, cash equivalents, short-term investments and existing sources of funding will be sufficient to satisfy our anticipated operating and capital requirements through at least the next 12 months. Our future operating and capital requirements will depend on many factors, including: the effectiveness of our commercial activities during the transition period of our contract sales agreement with King, which was initiated on October 1, 2006; the pace of scientific progress in our research and development programs; the magnitude of these programs; the scope and results of preclinical testing and clinical trials; the time and costs involved in obtaining regulatory approvals; the costs involved in preparing, filing, prosecuting, maintaining and enforcing patent claims; competing technological and market developments; the efforts of our collaborators; and the cost of production. We will also consider additional equipment financing arrangements similar to arrangements currently in place.

Pursuant to the Oncology Purchase Agreement, at closing on October 25, 2006, we received approximately $205.0 million in cash of which $20.0 million was funded into an escrow account to support any indemnification claims made by Eisai following the closing of the sale. In addition, and as a condition of the $37.8 million loan received from King, $38.6 million of the funds received from Eisai was deposited into a restricted account to be used to repay the loan plus interest, due January 1, 2007.

Pursuant to the AVINZA Purchase Agreement, at Closing, we expect to receive a cash payment of approximately $265.0 million, subject to adjustment based on certain closing conditions. Of the amount received, $15.0 million will be funded into an escrow account to support any indemnification claims made by King.

We have announced that the Board of Directors is considering an extraordinary dividend of a substantial portion of the net proceeds from our product line asset sales. However, other than this extraordinary dividend, we do not anticipate paying cash dividends on any of our securities in the foreseeable future.

Leases and Off-Balance Sheet Arrangements

We lease certain of our office and research facilities under operating lease arrangements with varying terms through July 2015. The agreements provide for increases in annual rents based on changes in the Consumer Price Index or fixed percentage increases ranging from 3% to 7%.

In connection with our sale of real property discussed above, we entered into an agreement with Slough to leaseback the building for a period of 15 years. Under the terms of the lease, we will pay a basic annual rent of $3.0 million (subject to an annual fixed percentage increase, as set forth in the agreement), plus a 1% annual management fee, property taxes and other normal and necessary expenses associated with the lease such as utilities, repairs and maintenance, etc. We will have the right to extend the lease for two five-year terms and will have the first right of refusal to lease, at market rates, any facilities built on the sold lots.

As of September 30, 2006, we are not involved in any off-balance sheet arrangements.

Contractual Obligations

As of September 30, 2006, future minimum payments due under our contractual obligations are as follows (in thousands):


	Payments Due by Period
	Total		Less than 1 year		1-3 years		3-5 years		After 5 years
Capital lease obligations (1)	$	5,394	$	2,483	$	2,732	$	179	$	¾
Operating lease obligations (11)		19,159		2,888		4,163		3,919		8,189
Loan payable to bank (2)(8)		13,107		1,191		11,916		¾		¾
6% Convertible Subordinated Notes (3)(9)		137,035		7,689		129,346		¾		¾
Organon termination liability (4)(5)(10)		271,371		48,833		30,304		41,518		150,716
Other liabilities (6)(11)		538		106		211		211		10
Retention bonus obligation (7)(11)		2,979		2,979		¾		¾		¾
Distribution service agreements (11)		10,003		10,003		¾		¾		¾
Consulting agreements (11)		1,086		1,086		¾		¾		¾
Manufacturing agreements (11)		8,351		8,351		¾		¾		¾

Total contractual obligations	$	469,023	$	85,609	$	178,672	$	45,827	$	158,915


(1	)	Includes interest payments as follows	$	546	$	333	$	206	$	7	$	—
(2	)	Includes interest payments as follows		1,523		828		695		—		—
(3	)	Includes interest payments as follows		8,885		7,689		1,196		—		—
(4	)	Includes estimated accretion adjustment to fair value as follows		128,392		1,111		8,110		18,272		100,899


(5)		Includes $37,750 paid to Organon in October 2006.

(6)		Includes a liability under a royalty financing agreement.

(7)		See “Recent Developments – Employee Retention and Severance Agreements.”

(8)		Does not include impact of repayment of mortgage note on November 6, 2006 in connection with sale and leaseback of premises as discussed in “Recent Developments – Sale and Leaseback of Premises.”

(9)		Does not include impact of conversion of notes as discussed in “Recent Developments – Conversion/Redemption of 6% Convertible Subordinated Notes.”

(10)		Does not include loan received from, or liabilities assumed by King in connection with AVINZA sale as discussed in “Recent Developments – Sale of AVINZA Product.”

(11)		Included in the table above are obligations related to discontinued operations totaling approximately $9.3 million, comprised of distribution service agreements of $3.6 million, consulting agreements of $0.5 million, manufacturing agreements of $3.0 million, auto leases of $1.5 million, other liabilities of $0.5 million and retention bonus obligation of $0.2 million.

As of September 30, 2006, we have net open purchase orders (defined as total open purchase orders at quarter end less any accruals or invoices charged to or amounts paid against such purchase orders) totaling approximately $15.0 million. For the 12 months ended December 31, 2006, we plan to spend approximately $2.4 million on capital expenditures.

In January 2006, we signed an agreement with Organon that terminated the AVINZA co-promotion agreement between the two companies and returned AVINZA co-promotion rights to Ligand. In connection with this agreement, Organon was paid $37.8 million in October 2006. We are obligated to pay Organon an additional $10.0 million on or before January 15, 2007, provided that Organon has made its minimum required level of sales calls. After termination, we will make quarterly royalty payments to Organon equal to 6.5% of AVINZA net sales through December 31, 2012 and thereafter 6.0% through patent expiration, currently anticipated to be November 2017. In connection with the planned AVINZA purchase by King, King will assume our outstanding obligations to Organon including reimbursing us for the $37.8 million paid to Organon in October 2006.

In connection with the AVINZA sale transaction discussed under “Overview”, King committed to loan us, at our option, $37.8 million (the “Loan”) to be used to pay our co-promote termination obligation to Organon due in October 2006. This loan was drawn, and the $37.8 million co-promote liability settled in October 2006. Amounts due under the loan are subject to certain market terms, including a 9.5% interest rate and a security interest in the Company’s assets other than those related to AVINZA. In addition, and as a condition of the $37.8 million loan received from King, $38.6 million of the funds received from Eisai was deposited into a restricted account to be used to repay the loan to King, plus interest, due January 1, 2007. If the transaction with King closes as contemplated by the AVINZA Purchase Agreement, the interest will be forgiven and the principal will be credited against the purchase price.

In March 2006, we entered into letter agreements with approximately 67 of our key employees, including a number of our executive officers. In September 2006, we entered into letter agreements with ten additional key employees and modified existing agreements with two employees. These letter agreements provide for certain retention or stay bonus payments to be paid in cash under specified circumstances as an additional incentive to remain employed in good standing with the Company. The Compensation Committee of the Board of Directors has approved the Company’s entry into these Agreements. The retention or stay bonus payments generally vest at the end of 2006 and total payments to employees of approximately $3.0 million would be made in January 2007 if all participants qualify for the payments. In accordance with SFAS 146, Accounting for Costs Associated with Exit or Disposal Activities, the cost of the plan is ratably accrued over the term of the agreements. For the three and nine months ended September 30, 2006, we recognized approximately $1.0 million and $2.1 million, respectively, of expense under the plan. As an additional retention incentive, certain employees were also granted stock options totaling approximately 122,000 shares at an exercise price of $11.90 per share.

In May 2006, Ligand and Cardinal Health PTS, LLC (“Cardinal”) entered into the First Amendment to the Manufacturing and Packaging Agreement for the manufacturing of AVINZA. The amendment principally adjusted certain contract dates, near-term minimum commitments and contract prices. Under the terms of the amended agreement, we committed to minimum annual purchases ranging from $0.8 million to $1.2 million for 2006; $2.2 million to $3.3 million for 2007; and $2.4 million to $3.6 million for 2008 through 2010.

October 2006 to us directly from the insurance carrier and then disbursed to the claimants’ attorneys, while $8.0 million will be paid by the insurance carrier directly to an independent escrow agent responsible for disbursing the funds to the class action suit claimants. In July 2006, our insurance carrier funded the escrow account with the $8.0 million to be disbursed to the claimants. Under SFAS No. 140, Accounting for Transfers and Servicing of Financial Assets and Extinguishments of Liabilities, funding of the escrow account represents the extinguishment of our liability to the claimants. Accordingly, we derecognized the $8.0 million receivable and accrued liability in our consolidated financial statements as of September 30, 2006.

As part of the settlement of the state derivative action, we have agreed to adopt certain corporate governance enhancements including the formalization of certain Board practices and responsibilities, a Board self-evaluation process, Board and Board Committee term limits (with gradual phase-in) and one-time enhanced independence requirements for a single director to succeed the current shareholder representatives on the Board. Neither we nor any of our current or former directors and officers have made any admission of liability or wrongdoing. On October 12, 2006, the Superior Court of California approved the settlement of the state derivative actions and entered final judgment of dismissal. The United States District Court has preliminarily approved the settlement of the Federal class action, however, that settlement and the settlement of the Federal derivative actions are all subject to final approval and orders of the court. The related investigation by the Securities and Exchange Commission is ongoing and is not affected by the settlements discussed above.

On July 31, 2006, we entered into a separation agreement with David Robinson providing for Mr. Robinson’s resignation as Chairman, President, and Chief Executive Officer of the Company. Under the separation agreement, Mr. Robinson will receive his base salary and certain benefits for 24 months, payable in five equal monthly installments beginning August 1, 2006 and ending December 1, 2006. In addition, the agreement provides for the immediate vesting of Mr. Robinson’s unvested stock options and an extension of the exercise period of his options to January 15, 2007. In connection with the resignation, we recognized expense of approximately $1.9 million in our third quarter 2006 financial statements, comprised of cash payments of $1.4 million and stock-based compensation of $0.5 million associated with the modification of the vesting and exercise period of the stock options.

On August 1, 2006, we announced that current director Henry F. Blissenbach had been named Chairman and interim Chief Executive Officer. We have agreed to pay Dr. Blissenbach $40,000 per month, commencing August 1, 2006, subject to cancellation by either party on thirty days’ notice, for his services as Chairman and interim Chief Executive Officer. In addition, Dr. Blissenbach will be eligible to receive incentive compensation of up to 50% of his base salary, but not more than $100,000, based upon his performance of certain objectives incorporated within the employment agreement which the Company and Dr. Blissenbach have entered into. Also, Dr. Blissenbach received a stock option grant to purchase 150,000 shares of our common stock at an exercise price of $9.20 per share. These stock options will vest 50% at the end of six months and the remaining 50% will vest at the end of one year, except that all of these stock options will vest upon the appointment of a new chief executive officer. Finally, we will reimburse Dr. Blissenbach for all reasonable expenses incurred in discharging his duties as interim Chief Executive Officer, including, but not limited to commuting costs to San Diego and living and related costs during the time he spends in San Diego.

Critical Accounting Policies

Certain of our accounting policies require the application of management judgment in making estimates and assumptions that affect the amounts reported in the consolidated financial statements and disclosures made in the accompanying notes. Those estimates and assumptions are based on historical experience and various other factors deemed to be applicable and reasonable under the circumstances. The use of judgment in determining such estimates and assumptions is by nature, subject to a degree of uncertainty. Accordingly, actual results could differ from the estimates made. Management believes that the only material changes during the nine months ended September 30, 2006 to the critical accounting policies reported in the Management’s Discussion and Analysis section of our 2005 Annual Report are related to 1) our accounting for the termination and return of the AVINZA co-promotion rights entered into with Organon in January 2006 and 2) our accounting for stock-based compensation.

Co-Promote Termination Accounting

As part of the agreement, we agreed to pay Organon $37.8 million on or before October 15, 2006, and after the termination, we will make quarterly payments to Organon equal to 6.5% of AVINZA net sales through December 31, 2012 and thereafter 6% through patent expiration, currently anticipated to be November 2017. The unconditional payment of $37.8 million to Organon and the estimated fair value of the amounts to be paid to Organon after the termination ($105.2 million as of September 30, 2006), based on the net sales of the product (currently anticipated to be paid quarterly through November 2017) were recognized as liabilities and expensed as costs of the termination as of the effective date of the agreement, January 2006.

Although the quarterly payments to Organon will be based on net reported AVINZA product sales, such payments will not result in current period expense in the period upon which the payment is based, but instead will be charged against the co-promote termination liability. Any changes to our estimates of future net AVINZA product sales, however, will result in a change to the liability which will be recognized as an increase or decrease to co-promote termination charges in the period such changes are identified. We also recognize additional co-promote termination charges each period to reflect the fair value of the termination liability. On a quarterly basis, management reviews the carrying value of the co-promote termination liability. Due to assumptions and judgments inherent in determining the estimates of future net AVINZA sales through November 2017, the actual amount of net AVINZA sales used to determine the current fair value of our co-promote termination liability may be materially different from our current estimates. In addition, because of the inherent difficulties of predicting possible changes to the estimates and assumptions used to determine the estimate of future AVINZA product sales, we are unable to quantify an estimate of the reasonably likely effect of any such changes on our results of operations or financial position.

Stock-Based Compensation

Effective January 1, 2006, our accounting policy related to stock option accounting changed upon our adoption of SFAS No. 123(R), Share-Based Payment. SFAS 123(R) requires us to expense the fair value of employee stock options and other forms of stock-based compensation. Under the fair value recognition provisions of SFAS 123(R), stock-based compensation cost is estimated at the grant date based on the value of the award and is recognized as expense ratably over the service period of the award. Determining the appropriate fair value model and calculating the fair value of stock-based awards requires judgment, including estimating stock price volatility, the risk-free interest rate, forfeiture rates and the expected life of the equity instrument. Expected volatility utilized in the model is based on the historical volatility of the Company’s stock price and other factors. The risk-free interest rate is derived from the U.S. Treasury yield in effect at the time of the grant. The model incorporates forfeiture assumptions based on an analysis of historical data. The expected life of the 2006 grants is derived in accordance with the safe harbor expected term assumptions under SAB No. 107. For the three and nine months ended September 30, 2006, we recorded $2.0 million and $4.0 million, respectively, of stock-based compensation for awards granted to employees and non-employee directors.

Prior to January 1, 2006, we accounted for options granted to employees in accordance with APB No. 25, Accounting for Stock Issued to Employees, and related interpretations and followed the disclosure requirements of SFAS No. 123, “Accounting for Stock-Based Compensation.” Therefore, prior to the first quarter of 2006, we did not record any compensation cost related to stock-based awards, as all options granted prior to 2006 had an exercise price equal to the market value of the underlying common stock on the date of grant. Periods prior to our first quarter of 2006 were not restated to reflect the fair value method of expensing stock options. The impact of expensing stock awards on our earnings may be significant and is further described in Note 1 to the notes to the unaudited condensed consolidated financial statements.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

At September 30, 2006, our investment portfolio included fixed-income securities of $22.8 million. These securities are subject to interest rate risk and will decline in value if interest rates increase. However, due to the short duration of our investment portfolio, an immediate 10% change in interest rates would have no material impact on our financial condition, results of operations or cash flows. At September 30, 2006, we also have certain equipment financing arrangements with variable rates of interest. Due to the relative insignificance of such arrangements, however, an immediate 10% change in interest rates would have no material impact on our financial condition, results of operations, or cash flows. Declines in interest rates over time will, however, reduce our interest income, while increases in interest rates over time will increase our interest expense.

We do not have a significant level of transactions denominated in currencies other than U.S. dollars and as a result we have limited foreign currency exchange rate risk. The effect of an immediate 10% change in foreign exchange rates would have no material impact on our financial condition, results of operations or cash flows.

ITEM 4. CONTROLS AND PROCEDURES

a) Evaluation of disclosure controls and procedures.

The Company is required to maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in its reports under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to management, including the Company’s Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”) as appropriate, to allow timely decisions regarding required disclosure.

In connection with the preparation of the Form 10-Q for the period ended September 30, 2006, management, under the supervision of the CEO and CFO, conducted an evaluation of disclosure controls and procedures. Based on that evaluation, the CEO and CFO concluded that the Company’s disclosure controls and procedures were not effective as of September 30, 2006 as they cannot assert the effective remediation of certain material weaknesses described in the Company’s management report on internal control over financial reporting included in Item 9A to its Annual Report on Form 10-K for the year ended December 31, 2005, as filed on March 31, 2006 and described below. As of September 30, 2006, certain of the material weaknesses identified in the 2005 Form 10-K have not been fully remediated. Additionally, since the material weaknesses described below have not been fully remediated, the CEO and CFO conclude that the Company’s disclosure controls and procedures are not effective at a reasonable assurance level as of the end of the fiscal quarter and as of the filing date of the Form 10-Q.

As of September 30, 2006, management identified the continued existence of the following material weaknesses, which were identified in our 2005 Annual Report, in connection with its assessment of the effectiveness of the Company’s internal control over financial reporting. Although changes have been implemented to our internal controls over financial reporting to address certain of these matters, as further discussed in Item (b) below, management has not completed their own assessment of these control deficiencies and their impact on our internal control over financial reporting.

	•		Spreadsheet Controls. In connection with the change in the Company’s revenue recognition for product sales from the sell-in method to the sell-through method, the use of spreadsheets has become a pervasive and integral part of the Company’s financial accounting, quarter-end close, and financial reporting processes. The Company did not have effective end user general controls over the access, change management and validation of spreadsheets used in its financial processes, nor did the Company have formal policies and procedures in place relating to the use of spreadsheets. As more fully discussed below, management has commenced the implementation of policies and procedures relating to spreadsheet management which are designed to ensure that adequate control activities exist surrounding significant spreadsheets. These policies and procedures, which include controls relating to data integrity, version control, and restricted access to such spreadsheets, were implemented and are considered to be operating effectively for the Company’s key revenue recognition spreadsheets as of September 30, 2006. These policies and procedures were not fully implemented for all other key (non-revenue recognition) spreadsheets until the third quarter of 2006 which precluded management’s ability to test, assess, and conclude as to the effectiveness of such remediated internal controls for a reasonable period of time prior to September 30, 2006. Considering the significant reliance on spreadsheets in the current period and given that management is not able to conclude as to the operating effectiveness of all key spreadsheet controls, the continuing deficiencies discussed above surrounding the use of spreadsheets have been assessed to be a material weakness as of September 30, 2006.

	•		Segregation of Duties. Management identified certain members of the Company’s accounting and finance department who had accounting system access rights that are incompatible with the current roles and duties of such individuals. This control deficiency was identified as of December 31, 2004. However, when considered in conjunction with the material weaknesses surrounding internal audit and monitoring controls discussed herein, this control deficiency was elevated to a material weakness as of December 31, 2005. In the first, second, and third quarters of 2006, the Company terminated access rights for those individuals who were determined to have system access incompatible with their job functions. While management believes the controls with respect to segregation of duties were appropriately designed and effective at September 30, 2006, the timing of the implementation of the remediation efforts and the Company’s program to test, assess,

and conclude as to the effectiveness of such remediation efforts resulted in management’s inability to conclude that such controls were operating effectively for a reasonable period of time prior to September 30, 2006.

•

Monitoring Controls. As a result of the demands placed on the Company’s accounting and finance department with respect to the Company’s accounting restatement in 2005, management did not properly maintain the Company’s documentation of internal control over financial reporting during 2005 to reflect changes in internal control over financial reporting and as a result did not substantively commence the process to update such documentation and complete its assessment until December 2005. Further, the restatement process which occurred in 2005 resulted in the delayed performance of certain control procedures in the period-end close process. Accordingly, management determined that this control deficiency constituted a material weakness as of December 31, 2005. As discussed below, management has implemented procedures to ensure more timely maintenance of internal control documentation and execution of its monitoring controls over its internal controls over financial reporting. However, such procedures were not fully implemented until the second quarter 2006 which precluded management’s ability to test, assess, and conclude as to the effectiveness of such remediated internal controls for a reasonable period of time prior to September 30, 2006.

As of September 30, 2006, certain of the material weaknesses identified in the 2005 Form 10-K, as listed below, have been assessed, as further discussed in Item (b) below, by management to be fully remediated. BDO Seidman LLP, our independent registered public accountants, has not performed any procedures to review our remediation efforts.

	•		Revenue Recognition. The Company previously reported that it did not have effective controls and procedures to ensure that revenues were recognized in accordance with generally accepted accounting principles. As further discussed below, the Company has implemented new revenue recognition models and related internal controls to remediate this weakness. Such remediation efforts, however, were not fully implemented until the fourth quarter of 2005. Management believes the controls with respect to revenue recognition were appropriately designed and effective at June 30, 2006 and continued to be effective at September 30, 2006, as further discussed in Item (b) below.

	•		Record Keeping and Documentation. The Company previously reported that it did not have adequate record keeping and documentation supporting the decisions made and the accounting for complex transactions. As further discussed below, the Company has implemented new procedures and controls to remediate this weakness. Such remediation efforts, however, were not fully implemented until the fourth quarter of 2005. Management believes the controls with respect to record keeping were appropriately designed and effective at June 30, 2006 and continued to be effective at September 30, 2006, as further discussed in Item (b) below.

	•		Lack of Sufficient Qualified Accounting Personnel. The Company previously reported that it did not have adequate manpower in its accounting and finance department and lacked sufficient qualified accounting personnel to identify and resolve complex accounting issues in accordance with generally accepted accounting principles. As further discussed below, the Company has appropriately designed the organization structure of its accounting and finance department and staffed key positions to remediate this weakness. Such remediation efforts, however, were not fully implemented until the second and third quarters of 2006. Management believes the controls, with respect to qualified accounting personnel, were appropriately designed and effective at September 30, 2006, as further discussed in Item (b) below.

	•		Financial Statement Close Procedures. The Company did not have adequate financial reporting and close procedures. As further discussed below, the Company previously reported that it has implemented new procedures and controls to remediate this weakness. Such remediation efforts, however, were not fully implemented until the fourth quarter of 2005. Management believes the controls with respect to financial statement close procedures were appropriately designed and effective at September 30, 2006, as further discussed in Item (b) below.

•

Internal Audit. The Company previously reported that it did not maintain an independent effective Internal Audit department. As further discussed below, in the second and third quarters of 2006 the Company hired three internal audit personnel, including a Director of Internal Audit, and received Audit Committee approval for its internal audit plan and the internal audit charter. Effective the third quarter of 2006, the Company’s internal audit department was operating in accordance with the approved charter and began executing the approved internal audit plan. Accordingly, management believes that controls with respect to the existence of an independent, effective internal audit department are in place and operating at September 30, 2006, as further discussed in Item (b) below.

b) Remediation Steps to Address Material Weaknesses

Revenue Recognition

	•		During 2005, the Company’s finance and accounting department, with the assistance of outside expert consultants, developed accounting models to recognize sales of its domestic products, except Panretin, under the sell-through revenue recognition method in accordance with generally accepted accounting principles. In connection with the development of these models, the Company also implemented a number of new and enhanced controls and procedures to support the sell-through revenue recognition accounting models. These controls and procedures include approximately 35 revenue models used in connection with the sell-through revenue recognition method including related contra-revenue models and demand reconciliations to support and assess the reasonableness of the data and estimates, which includes information and estimates obtained from third-parties.

	•		During the fourth quarter of 2005, the accounting and finance department completed the implementation of procedures surrounding the month-end close process to ensure that the information and estimates necessary for reporting product revenues under the sell-through method to facilitate a timely period-end close were available.

	•		A training program for employees and consultants involved in the revenue recognition accounting has been developed and took place during the fourth quarter of 2005. In 2006, additional training has been provided and updated as considered necessary.

	•		The Company staffed the position of Senior Revenue Recognition Analyst in the second quarter of 2006 and has implemented additional reviews over the revenue recognition area by senior accounting and finance personnel. The Company has not filled the position of Manager of Revenue Recognition. However, given the sale of the Company’s revenue-producing assets, filling this position is not a significant priority and management believes that the measures identified above are sufficient to address the control considerations surrounding revenue recognition.

	•		Certain of the remediation efforts described above relating to the new revenue recognition models and related controls were not implemented until the fourth quarter of 2005. Management believes the controls with respect to revenue recognition were appropriately designed and effective since June 30, 2006.

Record Keeping and Documentation

	•		The Company has implemented improved procedures for analyzing, reviewing, and documenting the support for significant and complex transactions. Documentation for all complex transactions is now maintained by the Corporate Controller.

	•		The Company’s accounting and finance and legal departments developed a formal internal policy during the fourth quarter of 2005 entitled “Documentation of Accounting Decisions,” regarding the preparation and maintenance of contemporaneous documentation supporting accounting transactions and contractual interpretations. The formal policy provides for enhanced communication between the Company’s finance and legal personnel.

•

The remediation efforts described above were not implemented until the fourth quarter of 2005. Management believes the controls with respect to record keeping and documentation were appropriately designed and effective since June 30, 2006.

Lack of Sufficient Qualified Accounting Personnel

	•		The Company’s previous Director of Internal Audit resigned effective December 2, 2005. In December 2005, the Company retained a nationally recognized external consulting firm to assist the Internal Audit department and oversee the Company’s ongoing compliance effort under Section 404 of the Sarbanes Oxley Act of 2002 until a permanent replacement for the Company’s Director of Internal Audit was hired. During the second quarter of 2006, the Company hired a Director of Internal Audit, who is a certified public accountant and who commenced employment in May 2006.

	•		During 2005, the Company engaged expert accounting consultants to assist the Company’s accounting and finance department with a number of activities, including the management and implementation of controls surrounding the Company’s new sell-through revenue recognition models, the administration of existing controls and procedures, preparation of the Company’s SEC filings and the documentation of complex accounting transactions.

	•		During the second quarter of 2006, the Company hired additional senior accounting personnel who are certified public accountants including, a Director of Corporate Accounting, a Senior Accounting Manager, and a Director of Internal Audit, as discussed above. The Company also staffed the position of Senior Revenue Recognition Analyst through an internal transfer in the second quarter of 2006 and hired a senior internal auditor and internal audit staff member in the third quarter of 2006. Additionally, the Company hired a Director of Budget and Financial Analysis in August 2006 to replace the Senior Manager, Budget and Financial Analysis who left the Company in June 2006. Lastly, other open positions below the manager level have been sufficiently staffed with qualified consulting personnel.

	•		The remediation efforts described above were not implemented until the second and third quarters of 2006. Management believes the controls with respect to qualified accounting personnel were appropriately designed and effective at September 30, 2006.

Financial Statement Close Procedures

	•		The Company has designed and implemented process improvements concerning the Company’s financial reporting and close procedures. A training session for all finance department employees and consultants involved in the financial statement close process took place during the fourth quarter of 2005. Additionally, an ongoing periodic training update/program has been implemented to conduct training sessions on a regular quarterly basis to provide training to its finance and accounting personnel and to review procedures for timely and accurate preparation and management review of documentation and schedules to support the Company’s financial reporting and period-end close process. As discussed above, the additional management personnel hired by the finance department will also help ensure that all documentation necessary for the financial reporting and period-end close procedures is properly prepared and reviewed.

	•		The remediation efforts described above were not implemented until the fourth quarter of 2005 (and the remediation efforts described above in qualified accounting personnel was not substantially completed until the second and third quarters of 2006). Management believes the controls with respect to financial statement close procedures were appropriately designed and effective at September 30, 2006.

Internal Audit

•

As discussed under the caption Lack of Sufficient Qualified Accounting Personnel above, the Company hired a Director of Internal Audit, who commenced employment in the second quarter of 2006 and hired a senior internal auditor and internal audit staff member in the third quarter of 2006. Additionally, until the Director

of Internal Audit commenced employment, the Company engaged a nationally recognized external consulting firm to perform the functions of the Internal Audit department.

	•		The internal audit charter and the internal audit plan for 2006 were approved by the Company’s Audit Committee during the third quarter of 2006. The Company’s internal audit department commenced execution of the approved internal audit plan during the third quarter of 2006.

	•		Based on the actions described above, management believes that controls related to the existence of an independent, effective internal audit department are in place and operating at September 30, 2006.

Spreadsheet Controls

•

Revenue Spreadsheet Controls. The Company has implemented new revenue recognition models and related internal controls to remediate this weakness. Such remediation efforts, however, were not fully implemented until the fourth quarter of 2005. Since June 30, 2006, the Company believes that the controls surrounding the revenue spreadsheets were appropriately designed and have been effective.

•

Non-Revenue Spreadsheet Controls. In the first, second, and third quarters of 2006, management identified and categorized significant spreadsheets using qualitative measures of financial risk and complexity. After being inventoried, the spreadsheets were subject to standardized control activity testing, ensuring that any deficiencies in such spreadsheets relating to security, change management, input validation, documentation, and segregation of duties were addressed. Management has completed the implementation of policies and procedures relating to spreadsheet management which are designed to ensure that adequate control activities exist surrounding significant spreadsheets. These policies and procedures, which include controls relating to data integrity, version control, and restricted access to such spreadsheets were fully implemented in the third quarter of 2006 and will be tested for operating effectiveness during the third and fourth quarters of 2006.

Segregation of Duties

•

In the first, second, and third quarters of 2006, management identified those members of the Company’s accounting and finance department who had accounting system access rights that were incompatible with the current roles and duties of such individuals and subsequently terminated the access rights for those individuals. On a quarterly basis, commencing with the first quarter of 2006, management monitors the accounting system access rights of those employees with access to the accounting software systems to identify any grants of incompatible user access rights or any user access rights resulting from subsequent changes or modifications to the Company’s internal control structure.

Monitoring Controls

•

As discussed under the caption Internal Audit above, the Company hired a Director of Internal Audit, who commenced employment in the second quarter of 2006. Additionally, prior to the Director of Internal Audit commencing employment, the Company engaged and continues to use a nationally recognized external consulting firm to assist with internal audit services. As part of this service, these consultants are responsible for assisting management with updating and maintaining the Company’s documentation of internal control over financial reporting. The consultants are also assisting with the testing of such internal controls and in monitoring the progress of any ongoing and newly identified remediation efforts to help ensure the timely completion of the Company’s 2006 monitoring program.

Independent Registered Public Accountants

BDO Seidman LLP, our independent registered public accountants, has not performed any procedures to review our remediation efforts.

PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

Securities Litigation

Since August 2004, the Company has been involved in several securities class action and shareholder derivative actions which followed announcements by the Company in 2004 and the subsequent restatement of its financial results in 2005. In June 2006, we announced that these lawsuits had been settled, subject to certain conditions such as court approval.

Background

Beginning in August 2004, several purported class action stockholder lawsuits were filed in the United States District Court for the Southern District of California against the Company and certain of its directors and officers. The actions were brought on behalf of purchasers of the Company’s common stock during several time periods, the longest of which runs from July 28, 2003 through August 2, 2004. The complaints generally allege that the Company violated Sections 10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 of the Securities and Exchange Commission by making false and misleading statements, or concealing information about the Company’s business, forecasts and financial performance, in particular statements and information related to drug development issues and AVINZA inventory levels. These lawsuits have been consolidated and lead plaintiffs appointed. A consolidated complaint was filed by the plaintiffs in March 2005. On September 27, 2005, the court granted the Company’s motion to dismiss the consolidated complaint, with leave for plaintiffs to file an amended complaint within 30 days. In December 2005, the plaintiffs filed a second amended complaint again alleging claims under Section 10(b) and 20(a) of the Securities Exchange Act against the Company, David Robinson and Paul Maier. The amended complaint asserts an expanded Class Period of March 19, 2001 through May 20, 2005 and includes allegations arising from the Company’s announcement on May 20, 2005 that it would restate certain financial results. Defendants filed their motion to dismiss plaintiffs’ second amended complaint in January 2006.

The Settlement Agreements

In June 2006, the Company entered into agreements to resolve all claims by the parties in each of these matters, including those asserted against the Company and the individual defendants in these cases. Under the agreements, the Company agreed to pay a total of $12.2 million in cash for a release and in full settlement of all claims. $12.0 million of the settlement amount and a portion of our total legal expenses was funded by our Directors and Officers Liability insurance carrier while the remainder of the legal fees incurred ($1.4 million for the three months ended June 30, 2006) was paid by us. Of the $12.2 million settlement liability, $4.0 million was paid in October 2006 to us directly from the insurance carrier and then disbursed to the claimants’ attorneys, while $8.0 million will be paid by the insurance carrier directly to an independent escrow agent responsible for disbursing the funds to the class action suit claimants. In July 2006, our insurance carrier funded the escrow account with the $8.0 million to be disbursed to the claimants. Under SFAS No. 140, Accounting for Transfers and Servicing of Financial Assets and

Extinguishments of Liabilities, funding of the escrow account represents the extinguishment of our liability to the claimants. Accordingly, we derecognized the $8.0 million receivable and accrued liability in our consolidated financial statements as of September 30, 2006. As part of the settlement of the state derivative action, we have agreed to adopt certain corporate governance enhancements including the formalization of certain Board practices and responsibilities, a Board self-evaluation process, Board and Board Committee term limits (with gradual phase-in) and one-time enhanced independent requirements for a single director to succeed the current shareholder representatives on the Board. Neither we nor any of our current or former directors and officers have made any admission of liability or wrongdoing. On October 12, 2006, the Superior Court of California approved the settlement of the state derivative actions and entered final judgment of dismissal. The United States District Court has preliminarily approved the settlement of the Federal class action, however, that settlement and the settlement of the Federal derivative actions are all subject to final approval and orders of the court.

SEC Investigation and Other Matters

The Company’s subsidiary, Seragen, Inc. and Ligand, were named parties to Sergio M. Oliver, et al. v. Boston University, et al., a putative shareholder class action filed on December 17, 1998 in the Court of Chancery in the State of Delaware in and for New Castle County, C.A. No. 16570NC, by Sergio M. Oliver and others against Boston University and others, including Seragen, its subsidiary Seragen Technology, Inc. and former officers and directors of Seragen. The complaint, as amended, alleged that Ligand aided and abetted purported breaches of fiduciary duty by the Seragen related defendants in connection with the acquisition of Seragen by Ligand and made certain misrepresentations in related proxy materials and seeks compensatory and punitive damages of an unspecified amount. On July 25, 2000, the Delaware Chancery Court granted in part and denied in part defendants’ motions to dismiss. Seragen, Ligand, Seragen Technology, Inc. and the Company’s acquisition subsidiary, Knight Acquisition Corporation, were dismissed from the action. Claims of breach of fiduciary duty remain against the remaining defendants, including the former officers and directors of Seragen. The court certified a class consisting of shareholders as of the date of the acquisition and on the date of the proxy sent to ratify an earlier business unit sale by Seragen. On January 20, 2005, the Delaware Chancery Court granted in part and denied in part the defendants’ motion for summary judgment. Prior to trial, several of the Seragen director-defendants reached a settlement with the plaintiffs. The trial in this action then went forward as to the remaining defendants and concluded on February 18, 2005. On April 14, 2006, the court issued a memorandum opinion finding for the plaintiffs and against Boston University and individual directors affiliated with Boston University on certain claims. The opinion awards damages on these claims in the amount of approximately $4.8 million plus interest. Judgment, however, has not been entered and the matter is subject to appeal. While Ligand and its subsidiary Seragen have been dismissed from the action, such dismissal is also subject to appeal and Ligand and Seragen may have possible indemnification obligations with respect to certain defendants. As of September 30, 2006, the Company has not accrued an indemnification obligation based on its assessment that the Company’s responsibility for any such obligation is not probable or estimable.

ITEM 1A. RISK FACTORS

The following is a summary description of some of the many risks we face in our business including, any risk factors as to which there may have been a material change from those set forth in our Annual Report on Form 10-K for the year ended December 31, 2005. You should carefully review these risks in evaluating our business, including the businesses of our subsidiaries. You should also consider the other information described in this report.

Risks Related To Us and Our Business.

Failure to timely complete our AVINZA product line sale or to successfully restructure our business could have adverse consequences for the Company.

We have announced agreements to sell both of our commercial product lines and our real estate assets. These agreements contemplate that we will complete those asset sales and in return receive substantial cash consideration by the end of the 2006 calendar year. We completed the oncology asset sale in October 2006 and the real estate asset sale in November 2006, but have not completed the pending AVINZA product line sale, which is the largest of the three. The AVINZA asset sale agreement contains a number of conditions to closing, including stockholder approval of the sale, and a number of other legal and operational requirements. Failure to timely satisfy these conditions, among other causes, could delay or prevent the closing of the transaction. For example, in order to obtain the required stockholder approval, we prepared and filed with the SEC a proxy statement, which may be reviewed by the SEC and subject to comments and revisions prior to mailing the proxy materials and scheduling the stockholder meeting. If we are unable to complete this process and close the transaction by December 31, 2006, neither King nor Ligand would be required to complete the transaction. Failure for any reason to complete the transaction could, e.g., prevent or delay the receipt of cash we need to run our business, cause us to have to use substantial cash to repay a loan from the purchaser of AVINZA, cause confusion and dissatisfaction among customers, suppliers and stockholders, subject us to legal action and harm our business in a number of other ways. In addition, any such delay or failure could depress our stock price.

In connection with these asset sales we are also planning a restructuring of our remaining businesses, principally our research and development. If we are unable to successfully and timely complete this restructuring, our remaining assets could lose value, we may not be able to retain key employees, we may not have sufficient resources to successfully manage those assets or our business, and we may not be able to perform our obligations under various contracts and commitments. Any of these could have substantial negative impacts on our business and our stock price.

The restatement of our consolidated financial statements has had a material adverse impact on us, including increased costs and the increased possibility of legal or administrative proceedings.

We determined that our consolidated financial statements for the years ended December 31, 2002 and 2003, and for the first three quarters of 2004, as described in more detail in our 2004 10-K, should be restated. As a result of these events, we have become subject to a number of additional risks and uncertainties, including:

•		We incurred substantial unanticipated costs for accounting and legal fees in 2005 in connection with the restatement. Although the restatement is complete, we expect to continue to incur unanticipated accounting and legal costs as noted below.

•		We were named in a number of lawsuits that began in August 2004 and an additional lawsuit filed in October 2005 claiming to be class actions and shareholder derivative actions. While we have agreed to settle this litigation, the settlements are subject to court approval. If not approved we could face substantial additional legal fees or judgments in excess of our insurance policy limits and management distraction.

•		The SEC has instituted a formal investigation of the Company’s consolidated financial statements. This investigation will likely divert more of our management’s time and attention and cause us to incur substantial costs. Such investigations can also lead to fines or injunctions or orders with respect to future activities, as well as further substantial costs and diversion of management time and attention.

Material weaknesses or deficiencies in our internal control over financial reporting could harm stockholder and business confidence on our financial reporting, our ability to obtain financing and other aspects of our business.

Maintaining an effective system of internal control over financial reporting is necessary for us to provide reliable financial reports. As disclosed in the Company’s 2005 Annual Report on Form 10-K, management’s assessment of the Company’s internal control over financial reporting identified material weaknesses in the Company’s internal controls surrounding (i) the accounting for revenue recognition; (ii) record keeping and documentation; (iii) accounting personnel; (iv) financial statement close procedures; (v) the inability of the Company to maintain an effective independent Internal Audit Department; (vi) the existence of ineffective spreadsheet controls used in connection with the Company’s financial processes, including review, testing, access and integrity controls; (vii) the existence of accounting system access rights granted to certain members of the Company’s accounting and finance department that are incompatible with the current roles and duties of such individuals (i.e., segregation of duties); and (viii) the inability of management to properly maintain the Company’s documentation of the internal control over financial reporting during 2005 or to substantively commence the process to update such documentation and assessment until December 2005. We have not fully remediated these material weaknesses and as a result, management continues to conclude that we did not maintain effective internal control over financial reporting as of September 30, 2006.

Because we have concluded that our internal control over financial reporting is not effective as of September 30, 2006 and our independent registered public accounting firm issued a disclaimer opinion on the effectiveness of our internal controls as of December 31, 2005 due to our inability to make a timely assessment of the effectiveness of our internal controls, and to the extent we identify future weaknesses or deficiencies, there could be material misstatements in our consolidated financial statements and we could fail to meet our financial reporting obligations. As a result, we could be delisted from the NASDAQ Global Market, our ability to obtain additional financing, or obtain additional financing on favorable terms, could be materially and adversely affected, each of which, in turn, could materially and adversely affect our business, our strategic alternatives, our financial condition and the market value of our securities. In addition, perceptions of us could also be adversely affected among customers, lenders, investors, securities analysts and others. Current material weaknesses or any future weaknesses or deficiencies could also hurt confidence in our business and consolidated financial statements and our ability to do business with these groups.

Our revenue recognition policy has changed to the sell-through method which is currently not used by most companies in the pharmaceutical industry which will make it more difficult to compare our results to the results of our competitors.

Because our revenue recognition policy has changed to the sell-through method which reflects products sold through the distribution channel, we do not recognize revenue for the domestic product shipments of AVINZA, and prior to the sale of our oncology products to Eisai, Inc. in October 2006, for ONTAK, Targretin capsules and Targretin gel. Under our previous method of accounting, product sales were recognized at time of shipment.

Under the sell-through revenue recognition method, future product sales and gross margins may be affected by the timing of certain gross to net sales adjustments including the cost of certain services provided by wholesalers under distribution service agreements, and the impact of price increases. Cost of products sold and therefore gross margins for our products may also be further impacted by changes in the timing of revenue recognition. Additionally, our revenue recognition models incorporate a significant amount of third party data from our wholesalers and IMS. Such data is subject to estimates and as such, any changes or corrections to these estimates identified in later periods, such as changes or corrections occurring as a result of natural disasters or other disruptions could affect the revenue that we report in future periods.

As a result of our change in revenue recognition policy and the fact that the sell-through method is not widely used by our competitors, it may be difficult for potential and current stockholders to assess our financial results and compare these results to others in our industry. This may have an adverse effect on our stock price.

Our new revenue recognition models under the sell-through method are extremely complex and depend upon the accuracy and consistency of third party data as well as dependence upon key finance and accounting personnel to maintain and implement the controls surrounding such models.

We have developed revenue recognition models under the sell-through method that are unique to the Company’s business and therefore are highly complex and not widely used in the pharmaceutical industry. The revenue recognition models incorporate a significant amount of third party data from our wholesalers and IMS. To effectively maintain the revenue recognition models, we depend to a considerable degree upon the timely and accurate reporting to us of such data from these third parties and our key accounting and finance personnel to accurately interpolate such data into the models. If the third party data is not calculated on a consistent basis and reported to us on an accurate or timely basis or we lose any of our key accounting and finance personnel, the accuracy of our consolidated financial statements could be materially affected. This could cause future delays in our earnings announcements, regulatory filings with the SEC, and potential delisting from the NASDAQ Global Market.

Changes in the estimated liability recognized under the termination and return of rights transaction with Organon could be material in future periods and potentially result in adjustments to our consolidated statements of operations that are inconsistent with the underlying trend in AVINZA product sales.

As previously disclosed, on January 17, 2006, we signed an agreement with Organon that terminated the AVINZA co-promotion agreement between the two companies and returned AVINZA rights to Ligand. However, the parties agreed to continue to cooperate during a transition period that ended September 30, 2006 (the “Transition Period”) to promote the product.

In consideration of the early termination and return of rights under the terms of the agreement, Ligand agreed to pay Organon $37.8 million on or before October 15, 2006. We will further pay Organon $10.0 million on or before January 15, 2007, provided that Organon has made its minimum required level of sales calls. In addition, after the termination, we will make quarterly payments to Organon equal to 6.5% of AVINZA net sales through December 31, 2012 and thereafter 6% through patent expiration, currently anticipated to be November 2017.

The unconditional payment of $37.8 million to Organon and the estimated fair value of the amounts to be paid to Organon after the termination ($105.2 million as of September 30, 2006), based on the net sales of the product (currently anticipated to be paid quarterly through November 2017) were recognized as liabilities and expensed as costs of the termination as of the effective date of the agreement, January 2006. Additionally, the conditional payment of $10.0 million, which represents the approximation of the fair value of that service element of the agreement, is being recognized ratably as additional co-promotion expense over the Transition Period.

Although the quarterly payments to Organon will be based on net reported AVINZA product sales, such payments will not result in current period expense in the period upon which the payment is based, but instead will be charged against the co-promote termination liability. The accretion to the current fair value for each reporting period will, however, be recognized as additional co-promote termination charges for that period at a rate of 15%, the discount rate used to initially value this component of the termination liability. Additionally, any changes to our estimates of future net AVINZA product sales (including for events, circumstances, changes in trends, and/or strategic decisions taken with respect to the product) will be recognized as an increase or decrease to co-promote termination charges in the period such changes are identified. Any such changes could be material and potentially result in adjustments to our consolidated statements of operations that are inconsistent with the underlying trend in AVINZA product sales.

Our single marketed product and our dependence on partners and other third parties mean our results are vulnerable to setbacks with respect to any one product.

We currently only market one product, AVINZA, and we have only a handful of other partnered products that have made significant progress through development. Because these numbers are small, especially the single marketed product, any significant setback with respect to any one of them could significantly impair our operating results and/or reduce the market price for our securities. Setbacks could include problems with shipping, distribution, manufacturing, product safety, marketing, government licenses and approvals, intellectual property rights and physician or patient acceptance of the product, as well as higher than expected total rebates, returns or discounts.

In particular, AVINZA now accounts for all of our product revenues. Thus, any setback with respect to AVINZA could significantly impact our financial results and our stock price. AVINZA was licensed from Elan Corporation which was previously its sole manufacturer. We have contracted with Cardinal to provide additional manufacturing capacity and we began to receive product from them in the second quarter of 2006. However, we expect Elan will continue to be a significant supplier over the next several years. Any problems with Elan’s or Cardinal’s manufacturing operations or capacity could reduce sales of AVINZA, as could any licensing or other contract disputes with these suppliers.

Similarly, King, our contract sales partner, executes a large part of the marketing and sales efforts for AVINZA and those efforts may be affected by our partner’s organization, operations, activities and events both related and unrelated to AVINZA. Historically, our sales efforts including our own or our prior partner’s, have encountered and continue to encounter a number of difficulties, uncertainties and challenges, including sales force reorganizations and lower than expected sales call and prescription volumes, which have hurt and could continue to hurt AVINZA sales growth. The negative impact on the product’s sales growth in turn has caused and may continue to cause our revenues and earnings to be disappointing. Any failure to fully optimize this new contract sales arrangement and the AVINZA brand, by either partner, could also cause AVINZA sales and our financial results to be disappointing and hurt our stock price. Any disputes with our contract sales partner could harm the promotion and sales of AVINZA and could result in substantial costs to us. In addition, the prior co-promotion arrangement ended in September 2006. Failure to successfully transition our prior partner’s efforts and functions back to Ligand and/or our new contract sales partner could adversely affect the sales of the product.

AVINZA is a relatively new product and therefore the predictability of its commercial results is relatively low. Higher than expected discounts (especially PBM/GPO rebates and Medicaid rebates, which can be substantial), returns and chargebacks and/or slower than expected market penetration could reduce sales. Other setbacks that AVINZA could face in the sustained-release opioid market include product safety and abuse issues, regulatory action, intellectual property disputes and the inability to obtain sufficient quotas of morphine from the Drug Enforcement Agency (“DEA”) to support our production requirements.

In particular, with respect to regulatory action and product safety issues, the FDA recently requested that we expand the warnings on the AVINZA label to alert doctors and patients to the dangers of using AVINZA with alcohol. We have made changes to the label, after consultation and agreement with the FDA. The FDA also requested clinical studies to investigate the risks associated with taking AVINZA with alcohol. We have submitted protocols to the FDA and are awaiting their comments on these protocol designs. These additional warnings, studies and any further regulatory action could have significant adverse affects on AVINZA sales.

Our product development and commercialization involve a number of uncertainties, and we may never generate sufficient revenues from the sale of products to become profitable.

We were founded in 1987. We have incurred significant losses since our inception. At September 30, 2006, our accumulated deficit was approximately $1.0 billion. We began receiving revenues from the sale of pharmaceutical products in 1999. To consistently be profitable, we must successfully develop, clinically test, market and sell our products. Even if we consistently achieve profitability, we cannot predict the level of that profitability or whether we will be able to sustain profitability. We expect that our operating results will fluctuate from period to period as a result of differences in when we incur expenses and receive revenues from product sales, collaborative arrangements and other sources. Some of these fluctuations may be significant.

Most of our products in development will require extensive additional development, including preclinical testing and human studies, as well as regulatory approvals, before we can market them. We cannot predict if or when any of the products we are developing or those being developed with our partners will be approved for marketing. For example, lasofoxifene (Oporia), a partner product being developed by Pfizer recently received a “non-approvable” decision from the FDA and trials of our previously marketed product Targretin failed to meet endpoints in Phase III trials in which we were studying its use in non small cell lung cancer. There are many reasons that we or our collaborative partners may fail in our efforts to develop our other potential products, including the possibility that:

	Ø		preclinical testing or human studies may show that our potential products are ineffective or cause harmful side effects;

	Ø		the products may fail to receive necessary regulatory approvals from the FDA or foreign authorities in a timely manner, or at all;

	Ø		the products, if approved, may not be produced in commercial quantities or at reasonable costs;

	Ø		the products, once approved, may not achieve commercial acceptance;

	Ø		regulatory or governmental authorities may apply restrictions to our products, which could adversely affect their commercial success; or

	Ø		the proprietary rights of other parties may prevent us or our partners from marketing the products.

Any product development failures for these or other reasons, whether with our products or our partners’ products, may reduce our expected revenues, profits, and stock price.

Third-party reimbursement and health care reform policies may reduce our future sales.

Sales of prescription drugs depend significantly on access to the formularies, or lists of approved prescription drugs, of third-party payers such as government and private insurance plans, as well as the availability of reimbursement to the consumer from these third party payers. These third party payers frequently require drug companies to provide predetermined discounts from list prices, and they are increasingly challenging the prices charged for medical products and services. Our current and potential products may not be considered cost-effective, may not be added to formularies and reimbursement to the consumer may not be available or sufficient to allow us to sell our products on a competitive basis. For example, we have current and recurring discussions with insurers regarding formulary access, discounts and reimbursement rates for our drugs, including AVINZA. We may not be able to negotiate favorable reimbursement rates and formulary status for our products or may have to pay significant discounts to obtain favorable rates and access.

In addition, the efforts of governments and third-party payers to contain or reduce the cost of health care will continue to affect the business and financial condition of drug companies such as us. A number of legislative and regulatory proposals to change the health care system have been discussed in recent years, including price caps and controls for pharmaceuticals. These proposals could reduce and/or cap the prices for our products or reduce government reimbursement rates for products. In addition, an increasing emphasis on managed care in the United States has and will continue to increase pressure on drug pricing. We cannot predict whether legislative or regulatory proposals will be adopted or what effect those proposals or managed care efforts may have on our business. The announcement and/or adoption of such proposals or efforts could adversely affect our profit margins and business.

Our revenues are dependent on maintaining an effective marketing and sales capability in the United States which is expensive and time-consuming and may increase our operating losses.

Maintaining an effective sales force to market and sell products is difficult, expensive and time-consuming. We have a US sales force of approximately 97 people as of October 26, 2006. We also rely on third-party distributors to distribute our products. The distributors are responsible for providing many support services, including customer service, order entry, shipping and billing and customer reimbursement assistance. Our reliance on these third parties means our results may suffer if any of them are unsuccessful or fail to perform as expected. We may not be able to continue to expand our sales and marketing capabilities sufficiently to successfully commercialize our products in the territories where they receive marketing approval. With respect to our contract sales or licensing arrangements, for example our contract sales agreement for AVINZA, any revenues we receive will depend substantially on the marketing and sales efforts of others, which may or may not be successful.

The cash flows from our product shipments may significantly fluctuate each period based on the nature of our products.

The purchasing and stocking patterns of our wholesaler customers for our AVINZA products are influenced by a number of factors that vary from wholesaler to wholesaler and even between individual distribution centers, including but not limited to overall level of demand, periodic promotions, required minimum shipping quantities and wholesaler competitive initiatives. Although we have distribution services contracts in place to maintain stable inventories at our major wholesalers, if any of them were to substantially reduce the inventory they carry in a given period, e.g. due to circumstances beyond their reasonable control, or contract termination or expiration, our shipments and cash flow for that period could be substantially lower than historical levels.

We have entered into fee-for-service or distributor services agreements with the majority of our wholesaler customers. Under these agreements, in exchange for a set fee, the wholesalers have agreed to provide us with certain services. The agreements typically have a one-year initial term and are renewable.

Our drug development programs will require substantial additional future funding which could hurt our operational and financial condition.

Our drug development programs require substantial additional capital to successfully complete them, arising from costs to:

	Ø		conduct research, preclinical testing and human studies;

	Ø		establish pilot scale and commercial scale manufacturing processes and facilities; and

	Ø		establish and develop quality control, regulatory, marketing, sales and administrative capabilities to support these programs.

Our future operating and capital needs will depend on many factors, including:

	Ø		the pace of scientific progress in our research and development programs and the magnitude of these programs;

	Ø		the scope and results of preclinical testing and human studies;

	Ø		the time and costs involved in obtaining regulatory approvals;

	Ø		the time and costs involved in preparing, filing, prosecuting, maintaining and enforcing patent claims;

	Ø		competing technological and market developments;

	Ø		our ability to establish additional collaborations;

	Ø		changes in our existing collaborations;

	Ø		the cost of manufacturing scale-up; and

	Ø		the effectiveness of our commercialization activities.

We currently estimate our research and development expenditures over the next 3 years to range between $90 million and $150 million. However, we base our outlook regarding the need for funds on many uncertain variables. Such uncertainties include regulatory approvals, the timing of events outside our direct control such as product launches by partners and the success of such product launches, negotiations with potential strategic partners, possible sale of assets or other transactions resulting from our strategic alternatives evaluation process which is ongoing, and other factors. Any of these uncertain events can significantly change our cash requirements as they determine such one-time events as the receipt of major milestones and other payments.

While we expect to fund our research and development activities from cash generated from internal operations to the extent possible, if we are unable to do so we may need to complete additional equity or debt financings or seek other external means of financing. If additional funds are required to support our operations and we are unable to obtain them on terms favorable to us, we may be required to cease or reduce further development or commercialization of our products, to sell some or all of our technology or assets or to merge with another entity.

We may require additional money to run our business and may be required to raise this money on terms which are not favorable or which reduce our stock price.

We have incurred losses since our inception and may not generate positive cash flow to fund our operations for one or more years. As a result, we may need to complete additional equity or debt financings to fund our operations. Our inability to obtain additional financing could adversely affect our business. Financings may not be available at all or on favorable terms. In addition, these financings, if completed, still may not meet our capital needs and could result in substantial dilution to our stockholders. For instance, in April 2002 and September 2003 we issued an aggregate of 7.7 million shares of our common stock in private placement offerings. In addition, in November 2002 we issued in a private placement $155.3 million in aggregate principal amount of our 6% convertible subordinated notes due 2007, that were convertible into 25,149,025 shares of our common stock. Approximately $125.15 million of principal amount of those notes remain outstanding and could be converted into approximately 20.8 million common shares. We announced the redemption of the notes in October 2006 and if noteholders do not convert into common stock, we would have to pay those noteholders cash equal to 101.2% of the principal amount of their notes.

If adequate funds are not available, we may be required to delay, reduce the scope of or eliminate one or more of our research or drug development programs, or our marketing and sales initiatives. Alternatively, we may be forced to attempt to continue development by entering into arrangements with collaborative partners or others that require us to relinquish some or all of our rights to technologies or drug candidates that we would not otherwise relinquish.

Our products face significant regulatory hurdles prior to marketing which could delay or prevent sales.

Before we obtain the approvals necessary to sell any of our potential products, we must show through preclinical studies and human testing that each product is safe and effective. We and our partners have a number of products moving toward or currently in clinical trials, including lasofoxifene for which Pfizer announced receipt of non-approval letters from the FDA, and two products in Phase III trials by one of our partners involving bazedoxifene. Failure to show any product’s safety and effectiveness would delay or prevent regulatory approval of the product and could adversely affect our business. The clinical trials process is complex and uncertain. The results of preclinical studies and initial clinical trials may not necessarily predict the results from later large-scale clinical trials. In addition, clinical trials may not demonstrate a product’s safety and effectiveness to the satisfaction of the regulatory authorities. A number of companies have suffered significant setbacks in advanced clinical trials or in seeking regulatory approvals, despite promising results in earlier trials. The FDA may also require additional clinical trials after regulatory approvals are received, which could be expensive and time-consuming, and failure to successfully conduct those trials could jeopardize continued commercialization.

The rate at which we complete our clinical trials depends on many factors, including our ability to obtain adequate supplies of the products to be tested and patient enrollment. Patient enrollment is a function of many factors, including the size of the patient population, the proximity of patients to clinical sites and the eligibility criteria for the trial. Delays in patient enrollment for our other trials may result in increased costs and longer development times. In addition, our collaborative partners have rights to control product development and clinical programs for products developed under the collaborations. As a result, these collaborators may conduct these programs more slowly or in a different manner than we had expected. Even if clinical trials are completed, we or our collaborative partners still may not apply for FDA approval in a timely manner or the FDA still may not grant approval.

We face substantial competition which may limit our revenues.

Some of the drugs that we are developing and marketing will compete with existing treatments. In addition, several companies are developing new drugs that target the same diseases that we are targeting and are taking IR-related approaches to drug development. Products that compete with AVINZA include Purdue Pharma L.P.’s OxyContin and MS Contin, Janssen Pharmaceutica L.P.’s Duragesic, aai Pharma’s Oramorph SR, Alpharma’s Kadian, and generic sustained release morphine sulfate, oxycodone and fentanyl. New generic, A/B substitutable or other competitive products may also come to market and compete with our products, reducing our market share and revenues. Many of our existing or potential competitors, particularly large drug companies, have greater financial, technical and human resources than we do and may be better equipped to develop, manufacture and market products. Many of these companies also have extensive experience in preclinical testing and human clinical trials, obtaining

FDA and other regulatory approvals and manufacturing and marketing pharmaceutical products. In addition, academic institutions, governmental agencies and other public and private research organizations are developing products that may compete with the products we are developing. These institutions are becoming more aware of the commercial value of their findings and are seeking patent protection and licensing arrangements to collect payments for the use of their technologies. These institutions also may market competitive products on their own or through joint ventures and will compete with us in recruiting highly qualified scientific personnel.

We rely heavily on collaborative relationships and termination of any of these programs could reduce the financial resources available to us, including research funding and milestone payments.

Our strategy for developing and commercializing many of our potential products, including products aimed at larger markets, includes entering into collaborations with corporate partners, licensors, licensees and others. These collaborations provide us with funding and research and development resources for potential products for the treatment or control of metabolic diseases, hematopoiesis, women’s health disorders, inflammation, cardiovascular disease, cancer and skin disease, and osteoporosis. These agreements also give our collaborative partners significant discretion when deciding whether or not to pursue any development program. Our collaborations may not continue or be successful.

In addition, our collaborators may develop drugs, either alone or with others, that compete with the types of drugs they currently are developing with us. This would result in less support and increased competition for our programs. If products are approved for marketing under our collaborative programs, any revenues we receive will depend on the manufacturing, marketing and sales efforts of our collaborators, who generally retain commercialization rights under the collaborative agreements. Our current collaborators also generally have the right to terminate their collaborations under specified circumstances. If any of our collaborative partners breach or terminate their agreements with us or otherwise fail to conduct their collaborative activities successfully, our product development under these agreements will be delayed or terminated.

We may have disputes in the future with our collaborators, including disputes concerning which of us owns the rights to any technology developed. For instance, we were involved in litigation with Pfizer, which we settled in April 1996, concerning our right to milestones and royalties based on the development and commercialization of droloxifene. These and other possible disagreements between us and our collaborators could delay our ability and the ability of our collaborators to achieve milestones or our receipt of other payments. In addition, any disagreements could delay, interrupt or terminate the collaborative research, development and commercialization of certain potential products, or could result in litigation or arbitration. The occurrence of any of these problems could be time-consuming and expensive and could adversely affect our business.

Challenges to or failure to secure patents and other proprietary rights may significantly hurt our business.

Our success will depend on our ability and the ability of our licensors to obtain and maintain patents and proprietary rights for our potential products and to avoid infringing the proprietary rights of others, both in the United States and in foreign countries. Patents may not be issued from any of these applications currently on file, or, if issued, may not provide sufficient protection. In addition, disputes with licensors under our license agreements may arise which could result in additional financial liability or loss of important technology and potential products and related revenue, if any.

Our patent position, like that of many pharmaceutical companies, is uncertain and involves complex legal and technical questions for which important legal principles are unresolved. We may not develop or obtain rights to products or processes that are patentable. Even if we do obtain patents, they may not adequately protect the technology we own or have licensed. In addition, others may challenge, seek to invalidate, infringe or circumvent any patents we own or license, and rights we receive under those patents may not provide competitive advantages to us. Further, the manufacture, use or sale of our products may infringe the patent rights of others.

Several drug companies and research and academic institutions have developed technologies, filed patent applications or received patents for technologies that may be related to our business. Others have filed patent applications and received patents that conflict with patents or patent applications we have licensed for our use, either

by claiming the same methods or compounds or by claiming methods or compounds that could dominate those licensed to us. In addition, we may not be aware of all patents or patent applications that may impact our ability to make, use or sell any of our potential products. For example, US patent applications may be kept confidential while pending in the Patent and Trademark Office and patent applications filed in foreign countries are often first published six months or more after filing. Any conflicts resulting from the patent rights of others could significantly reduce the coverage of our patents and limit our ability to obtain meaningful patent protection. While we routinely receive communications or have conversations with the owners of other patents, none of these third parties have directly threatened an action or claim against us. If other companies obtain patents with conflicting claims, we may be required to obtain licenses to those patents or to develop or obtain alternative technology. We may not be able to obtain any such licenses on acceptable terms, or at all. Any failure to obtain such licenses could delay or prevent us from pursuing the development or commercialization of our potential products.

We have had and will continue to have discussions with our current and potential collaborators regarding the scope and validity of our patents and other proprietary rights. If a collaborator or other party successfully establishes that our patent rights are invalid, we may not be able to continue our existing collaborations beyond their expiration. Any determination that our patent rights are invalid also could encourage our collaborators to terminate their agreements where contractually permitted. Such a determination could also adversely affect our ability to enter into new collaborations.

We may also need to initiate litigation, which could be time-consuming and expensive, to enforce our proprietary rights or to determine the scope and validity of others’ rights. If litigation results, a court may find our patents or those of our licensors invalid or may find that we have infringed on a competitor’s rights. If any of our competitors have filed patent applications in the United States which claim technology we also have invented, the Patent and Trademark Office may require us to participate in expensive interference proceedings to determine who has the right to a patent for the technology.

We also rely on unpatented trade secrets and know-how to protect and maintain our competitive position. We require our employees, consultants, collaborators and others to sign confidentiality agreements when they begin their relationship with us. These agreements may be breached, and we may not have adequate remedies for any breach. In addition, our competitors may independently discover our trade secrets.

Reliance on third-party manufacturers to supply our products risks supply interruption or contamination and difficulty controlling costs.

We currently have no manufacturing facilities, and we rely on others for clinical or commercial production of our marketed and potential products. In addition, some raw materials necessary for the commercial manufacturing of AVINZA are custom and can be obtained only from our manufacturers, Elan and Cardinal.

To be successful, we will need to ensure continuity of the manufacture of AVINZA, either directly or through others, in commercial quantities, in compliance with regulatory requirements at acceptable cost and in sufficient quantities to meet product growth demands. Any extended or unplanned manufacturing shutdowns, shortfalls or delays could be expensive and could result in inventory and product shortages. If we are unable to reliably manufacture our products our revenues could be adversely affected.

In addition, if we are unable to supply products in development, our ability to conduct preclinical testing and human clinical trials will be adversely affected. This in turn could also delay our submission of products for regulatory approval and our initiation of new development programs. In addition, although other companies have manufactured drugs acting through IRs on a commercial scale, we may not be able to translate our core technologies or other technologies into drugs that can be manufactured at costs or in quantities to make marketable products.

The manufacturing process also may be susceptible to contamination, which could cause the affected manufacturing facility to close until the contamination is identified and fixed. In addition, problems with equipment failure or operator error also could cause delays in filling our customers’ orders.

Our business exposes us to product liability risks or our products may need to be recalled, and we may not have sufficient insurance to cover any claims.

Our business exposes us to potential product liability risks. Our products also may need to be recalled to address regulatory issues. A successful product liability claim or series of claims brought against us could result in payment of significant amounts of money and divert management’s attention from running the business. Some of the compounds we are investigating may be harmful to humans. For example, retinoids as a class are known to contain compounds which can cause birth defects. We may not be able to maintain our insurance on acceptable terms, or our insurance may not provide adequate protection in the case of a product liability claim. To the extent that product liability insurance, if available, does not cover potential claims, we will be required to self-insure the risks associated with such claims. We believe that we carry reasonably adequate insurance for product liability claims.

We use hazardous materials which requires us to incur substantial costs to comply with environmental regulations.

In connection with our research and development activities, we handle hazardous materials, chemicals and various radioactive compounds. To properly dispose of these hazardous materials in compliance with environmental regulations, we are required to contract with third parties at substantial cost to us. Our annual cost of compliance with these regulations is approximately $0.7 million. We cannot completely eliminate the risk of accidental contamination or injury from the handling and disposing of hazardous materials, whether by us or by our third-party contractors. In the event of any accident, we could be held liable for any damages that result, which could be significant. We believe that we carry reasonably adequate insurance for toxic tort claims.

Future sales of our securities may depress the price of our securities.

Sales of substantial amounts of our securities in the public market could seriously harm prevailing market prices for our securities. These sales might make it difficult or impossible for us to sell additional securities when we need to raise capital.

You may not receive a return on your securities other than through the sale of your securities.

We have not paid any cash dividends on our common stock to date. In general, we intend to retain any earnings to support the expansion of our business. We have announced that the Board of Directors is considering an extraordinary dividend of a substantial portion of the net proceeds from our product line asset sales. However, other than this extraordinary dividend, we do not anticipate paying cash dividends on any of our securities in the foreseeable future. Thus any returns you receive will be highly dependent on increases in the market price for our securities, if any. The price for our common stock has been highly volatile and may decrease.

Our shareholder rights plan and charter documents may hinder or prevent change of control transactions.

Our shareholder rights plan and provisions contained in our certificate of incorporation and bylaws may discourage transactions involving an actual or potential change in our ownership. In addition, our Board of Directors may issue shares of preferred stock without any further action by you. Such issuances may have the effect of delaying or preventing a change in our ownership. If changes in our ownership are discouraged, delayed or prevented, it would be more difficult for our current Board of Directors to be removed and replaced, even if you or our other stockholders believe that such actions are in the best interests of us and our stockholders.

ITEM 6. EXHIBITS


Exhibit Number		Description
3.1 (1)		Amended and Restated Certificate of Incorporation of the Company. (Filed as Exhibit 3.2).

3.2 (1)		Bylaws of the Company, as amended. (Filed as Exhibit 3.3).

3.3 (2)		Amended Certificate of Designation of Rights, Preferences and Privileges of Series A Participating Preferred Stock of the Company.

3.5 (3)		Certificate of Amendment of the Amended and Restated Certificate of Incorporation of the Company dated June 14, 2000.

3.6 (4)		Certificate of Amendment of the Amended and Restated Certificate of Incorporation of the Company dated September 30, 2004.

3.7 (5)		Amendment to the Bylaws dated November 13, 2005 (Filed as Exhibit 3.1).

4.1 (6)		Specimen stock certificate for shares of Common Stock of the Company.

4.2 (18)		2006 Preferred Shares Rights Agreement, dated as of October 13, 2006, by and between the Company and Mellon Investor Services, LLC (Filed as Exhibit 4.1).

4.3 (11)		Indenture dated November 26, 2002, between Ligand Pharmaceuticals Incorporated and J.P. Morgan Trust Company, National Association, as trustee, with respect to the 6% convertible subordinated notes due 2007. (Filed as Exhibit 4.3).

4.4 (11)		Form of 6% Convertible Subordinated Note due 2007. (Filed as Exhibit 4.4).

4.5 (11)		Pledge Agreement dated November 26, 2002, between Ligand Pharmaceuticals Incorporated and J.P. Morgan Trust Company, National Association. (Filed as Exhibit 4.5).

4.6 (11)		Control Agreement dated November 26, 2002, among Ligand Pharmaceuticals Incorporated, J.P. Morgan Trust Company, National Association and JP Morgan Chase Bank. (Filed as Exhibit 4.6).

10.294 (13)		Purchase Agreement, by and between Ligand Pharmaceuticals Incorporated, King Pharmaceuticals, Inc. and King Pharmaceuticals Research and Development, Inc., dated as of September 6, 2006. (Filed as Exhibit 2.1)

10.295 (14)		Contract Sales Force Agreement, by and between Ligand Pharmaceuticals Incorporated and King Pharmaceuticals, Inc. dated as of September 6, 2006. (Filed as Exhibit 10.1)

10.296 (15)		Purchase Agreement, by and among Ligand Pharmaceuticals Incorporated, Seragen, Inc., Eisai Inc. and Eisai Co., Ltd., dated as of September 7, 2006. (Filed as Exhibit 2.1)

10.297 (16)		Separation Agreement dated as of July 31, 2006 by and between the Company and David E. Robinson. (Filed as Exhibit 10.1)

10.298		Offer letter/employment agreement by and between the Company and Henry F. Blissenbach, dated as of August 1, 2006.

10.299 (17)		Form of Letter Agreement (Change of Control Severance Agreement) by and between the Company and certain officers dated as of August 25, 2006. (Filed as Exhibit 10.1)

10.300 (17)		Form of Letter Agreement (Ordinary Severance Agreement) by and between the Company and certain officers dated as of August 25, 2006. (Filed as Exhibit 10.2)

31.1		Certification by Principal Executive Officer, Pursuant to Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.


Exhibit Number		Description
31.2		Certification by Principal Financial Officer, Pursuant to Rules 13a-14(a) and 15d-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

32.1		Certification by Principal Executive Officer, Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

32.2		Certification by Principal Financial Officer, Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.


(1)		This exhibit was previously filed as part of, and is hereby incorporated by reference to the numbered exhibit filed with the Company’s Registration Statement on Form S-4 (No. 333-58823) filed on July 9, 1998.

(2)		This exhibit was previously filed as part of and is hereby incorporated by reference to same numbered exhibit filed with the Company’s Quarterly Report on Form 10-Q for the period ended March 31, 1999.

(3)		This exhibit was previously filed as part of, and are hereby incorporated by reference to the same numbered exhibit filed with the Company’s Annual Report on Form 10-K for the year ended December 31, 2000.

(4)		This exhibit was previously filed as part of, and is hereby incorporated by reference to the same numbered exhibit filed with the Company’s Quarterly Report on Form 10-Q for the period ended September 30, 2004.

(5)		This exhibit was previously filed as part of, and is being incorporated by reference to the number exhibit filed with the Company’s current report on Form 8-K filed on November 14, 2005.

(6)		This exhibit was previously filed as part of, and is hereby incorporated by reference to the same numbered exhibit filed with the Company’s Registration Statement on Form S-1 (No. 33-47257) filed on April 16, 1992 as amended.

(7)		This exhibit was previously filed as part of, and is hereby incorporated by reference to the numbered exhibit filed with the Company’s Registration Statement on Form S-3 (No. 333-12603) filed on September 25, 1996, as amended.

(8)		This exhibit was previously filed as part of, and is hereby incorporated by reference to the numbered exhibit filed with the Registration Statement on Form 8-A/A Amendment No. 1 (No. 0-20720) filed on November 10, 1998.

(9)		This exhibit was previously filed as part of, and is hereby incorporated by reference to the numbered exhibit filed with the Registration Statement on Form 8-A/A Amendment No. 2 (No. 0-20720) filed on December 24, 1998.

(10)		This exhibit was previously filed as part of, and is hereby incorporated by reference to the same numbered exhibit filed with the Company’s Quarterly Report on Form 10-Q for the period ended September 30, 2002.

(11)		This exhibit was previously filed as part of, and is hereby incorporated by reference to the numbered exhibit filed with the Company’s Registration Statement on Form S-3 (No. 333-102483) filed on January 13, 2003, as amended.

(12)		This exhibit was previously filed as part of, and is hereby incorporated by reference to the numbered exhibit filed with the Company’s Form 8-A 12G/A, filed on April 6, 2004.

(13)		This exhibit was previously filed as part of, and is being incorporated by reference to the numbered exhibit filed with the Company’s current report on Form 8-K filed on September 11, 2006.

(14)		This exhibit was previously filed as part of, and is being incorporated by reference to the numbered exhibit filed with the Company’s current report on Form 8-K filed on September 12, 2006.

Exhibit 10.298

William A. Pettit
Senior Vice President,
Human Resources and Administration

August 1, 2006

Henry F. Blissenbach
607 Pond View Drive
Mendota Heights, MN 55120

Dear Hank:

We are pleased to offer you the exempt position of Chairman & Interim Chief Executive Officer with Ligand Pharmaceuticals Incorporated reporting to the Board of Directors. We are offering you a starting salary of $40,000 per month. The effective date of the position is Tuesday, August 1, 2006.

In addition, subject to the consent of the Compensation Committee of the Board of Directors’ and regulatory approval, you will be granted an option to purchase one hundred fifty thousand (150,000) shares of common stock in the Company, to vest 50% at the end of six months and the remaining 50% to vest at the end of one year, except that all of these options will vest immediately upon the appointment of a new Chief Executive Officer. You will be eligible for incentive compensation of up to 50% of your base salary, not to exceed $100,000, based upon performance of certain objectives to be agreed upon. Documented, out-of-pocket expenses related to your duties, including commuting to San Diego and living expenses will be reimbursed by the Company.

As a regular employee of Ligand, you will become eligible to participate in Company-sponsored benefits. Your medical benefits will be effective on the first day of the month following your employment date. Ligand’s total compensation package, including salary, equity participation in the company, and the benefits program, when viewed in its entirety, is one of the best in the pharmaceutical industry, including the large multi-national pharmaceutical companies.

Employment with Ligand is not for a specific term and can be terminated by you or by the Company at any time for any reason, with or without cause by either party after 30 days notice. If you accept this offer, the terms and conditions in this letter shall be the terms of your employment.

Sincerely,
LIGAND PHARMACEUTICALS INC.

/S/ William A. Pettit
William A. Pettit
Senior Vice President,
Human Resources and Administration
:dm

Agreed and Accepted:


/S/ Henry F. Blissenbach

Henry F. Blissenbach

Exhibit 31.1

CHIEF EXECUTIVE OFFICER CERTIFICATION

I, Henry F. Blissenbach, Chairman and interim Chief Executive Officer, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Ligand Pharmaceuticals Incorporated;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) designed such internal control over financial reporting, or caused such control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 14, 2006


/S/ Henry F. Blissenbach

Henry F. Blissenbach
Chairman and interim Chief Executive Officer

Exhibit 31.2

CHIEF FINANCIAL OFFICER CERTIFICATION

I, Paul V. Maier, Senior Vice President and Chief Financial Officer, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of Ligand Pharmaceuticals Incorporated;

b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: November 14, 2006


/S/ Paul V. Maier

Paul V. Maier
Senior Vice President and Chief Financial Officer

Exhibit 32.1

CERTIFICATION BY PRINCIPAL EXECUTIVE OFFICER
PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO SECTION 906
OF THE SARBANES-OXLEY ACT OF 2002

In connection with the accompanying Quarterly Report on Form 10-Q of Ligand Pharmaceuticals Incorporated (the “Company”) for the quarter ended September 30, 2006, I, Henry F. Blissenbach, Chairman and interim Chief Executive Officer of the Company, hereby certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge and belief, that:

(1) such Quarterly Report on Form 10-Q for the quarter ended September 30, 2006, fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) the information contained in such Quarterly Report on Form 10-Q for the quarter ended September 30, 2006, fairly presents, in all material respects, the financial condition and results of operations of the Company.

The foregoing certification is being furnished solely to accompany the Report pursuant to 18 U.S.C. § 1350, and is not being filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, and is not to be incorporated by reference into any filing of the Company, whether made before or after the date hereof, regardless of any general incorporation language in such filing.


Date: November 14, 2006		/S/ Henry F. Blissenbach

		Henry F. Blissenbach
		Chairman and interim Chief Executive Officer

Exhibit 32.2

CERTIFICATION BY PRINCIPAL FINANCIAL OFFICER
PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO SECTION 906
OF THE SARBANES-OXLEY ACT OF 2002

In connection with the accompanying Quarterly Report on Form 10-Q of Ligand Pharmaceuticals Incorporated (the “Company”) for the quarter ended September 30, 2006, I, Paul V. Maier, Senior Vice President and Chief Financial Officer of the Company, hereby certify pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge and belief, that:

(1) such Quarterly Report on Form 10-Q for the quarter ended September 30, 2006, fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and


Date: November 14, 2006		/S/ Paul V. Maier

		Paul V. Maier
		Senior Vice President and Chief Financial Officer


PART I. FINANCIAL INFORMATION

ITEM 1. Financial Statements (Unaudited)

Condensed Consolidated Balance Sheets as of September 30, 2006 and December 31, 2005			3

Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2006 and 2005			4

Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2006 and 2005			5

Notes to Condensed Consolidated Financial Statements			6

ITEM 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations			33

ITEM 3. Quantitative and Qualitative Disclosures about Market Risk			53

ITEM 4. Controls and Procedures			54

PART II. OTHER INFORMATION

ITEM 1. Legal Proceedings			60

ITEM 1A. Risk Factors			62

ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds			*

ITEM 3. Defaults upon Senior Securities			*

ITEM 4. Submission of Matters to a Vote of Security Holders			*

ITEM 5. Other Information			*

ITEM 6. Exhibits			72

SIGNATURE			75


(15)		This exhibit was previously filed as part of, and is being incorporated by reference to the numbered exhibit filed with the Company’s current report on Form 8-K filed on September 11, 2006.

(16)		This exhibit was previously filed as part of, and is being incorporated by reference to the numbered exhibit filed with the Company’s current report on Form 8-K filed on August 4, 2006.

(17)		This exhibit was previously filed as part of, and is being incorporated by reference to the numbered exhibit filed with the Company’s current report on Form 8-K filed on August 30, 2006.

(18)		This exhibit was previously filed as part of, and is being incorporated by reference to the numbered exhibit filed with the Company’s current report on Form 8-K filed on October 27, 2006.