UNITED STATES SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

þ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 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 No. 0-28178

CARBO CERAMICS INC.

(Exact name of registrant as specified in its charter)

DELAWARE	72-1100013
(State or other jurisdiction of	(I.R.S. Employer
incorporation or organization)	Identification Number)

6565 MacArthur Boulevard
Suite 1050
Irving, Texas 75039
(Address of principal executive offices)

(972) 401-0090
(Registrant’s telephone number)

     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. See definition of “accelerated filer and large accelerated filer” in Rule 12b-2 of the Exchange Act.

Large Accelerated Filer þ       Accelerated Filer o       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

APPLICABLE ONLY TO ISSUERS INVOLVED IN BANKRUPTCY
PROCEEDINGS DURING THE PRECEDING FIVE YEARS:

     Indicate by check mark whether the registrant has filed all documents and reports required to be filed by Sections 12, 13 or 15(d) of the Securities Exchange Act of 1934 subsequent to the distribution of securities under a plan confirmed by a court. Yes o No o

     As of July 31, 2006, 24,371,112 shares of the registrant’s Common Stock, par value $.01 per share, were outstanding.

CARBO CERAMICS INC.

Index to Quarterly Report on Form 10-Q

	PAGE
PART I. FINANCIAL INFORMATION
Item 1. Financial Statements
Consolidated Balance Sheets — June 30, 2006 (Unaudited) and December 31, 2005	3
Consolidated Statements of Income (Unaudited) — Three and six months ended June 30, 2006 and 2005	4
Consolidated Statements of Cash Flows (Unaudited) — Six months ended June 30, 2006 and 2005	5
Notes to Consolidated Financial Statements (Unaudited)	6-9
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	10-14
Item 3. Quantitative and Qualitative Disclosures about Market Risk	14
Item 4. Controls and Procedures	14
PART II. OTHER INFORMATION
Item 1. Legal proceedings	15
Item 1A. Risk factors	15
Item 2. Unregistered sales of equity securities and use of proceeds	15
Item 3. Defaults upon senior securities	15
Item 4. Submission of matters to a vote of security holders	15
Item 5. Other information	16
Item 6. Exhibits	16
Signatures	17
Exhibit Index	18

TABLE OF CONTENTS

Rule 13a-14(a)/15d-14(a) Certification

Rule 13a-14(a)/15d-14(a) Certification

Certification Pursuant to 18 U.S.C. Section 1350

2

PART I. FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

CARBO CERAMICS INC.

CONSOLIDATED BALANCE SHEETS

($ in thousands)

	June 30,		December 31,
	2006		2005
	(Unaudited)		(Note 1)
ASSETS
Current assets:
Cash and cash equivalents	$	15,559	$	19,695
Short-term investments		41,215		41,975
Trade accounts receivable, net		57,809		53,918
Inventories:
Finished goods		26,728		17,981
Raw materials and supplies		7,815		8,490
Total inventories		34,543		26,471
Prepaid expenses and other current assets		3,625		2,433
Deferred income taxes		4,269		3,795
Total current assets		157,020		148,287
Property, plant and equipment:
Land and land improvements		2,812		2,812
Land-use and mineral rights		5,279		5,271
Buildings		25,092		15,051
Machinery and equipment		209,666		154,785
Construction in progress		43,757		72,074
Total		286,606		249,993
Less accumulated depreciation		79,440		70,493
Net property, plant and equipment		207,166		179,500
Goodwill		21,840		21,840
Intangible and other assets, net		6,945		6,169
Total assets	$	392,971	$	355,796
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	9,639	$	11,277
Accrued payroll and benefits		5,454		6,941
Accrued freight		1,156		1,356
Accrued utilities		3,028		3,389
Accrued income taxes		21,410		9,998
Retainage related to construction in progress		180		337
Other accrued expenses		7,364		3,011
Total current liabilities		48,231		36,309
Deferred income taxes		27,041		26,121
Shareholders’ equity:
Preferred stock, par value $0.01 per share, 5,000 shares authorized, none outstanding		—		—
Common stock, par value $0.01 per share, 40,000,000 shares authorized; 24,367,612 and 24,286,388 shares issued and outstanding at June 30, 2006 and December 31, 2005, respectively		244		243
Additional paid-in capital		102,930		102,536
Unearned stock compensation		—		(2,135	)
Retained earnings		213,176		192,196
Accumulated other comprehensive income		1,349		526
Total shareholders’ equity		317,699		293,366
Total liabilities and shareholders’ equity	$	392,971	$	355,796

The accompanying notes are an integral part of these statements.

3

CARBO CERAMICS INC.

CONSOLIDATED STATEMENTS OF INCOME

($ in thousands, except per share data)
(Unaudited)

	Three months ended					Six months ended
	June 30,					June 30,
	2006		2005			2006		2005
Revenues	$	73,485	$	63,834		$	147,763	$	125,002
Cost of sales		46,095		38,202			93,007		74,549
Gross profit		27,390		25,632			54,756		50,453
Selling, general and administrative expenses		8,793		6,777			16,266		13,826
Start-up costs		70		239			421		254
Loss on disposal of assets		—		95			—		95
Operating profit		18,527		18,521			38,069		36,278
Other income (expense):
Net interest income		487		526			924		910
Earnings in equity-method investee		47		95			30		95
Other, net		302		(11	)		657		(8	)
		836		610			1,611		997
Income before income taxes		19,363		19,131			39,680		37,275
Income taxes		6,501		6,954			13,834		13,504
Net income	$	12,862	$	12,177		$	25,846	$	23,771
Earnings per share:
Basic	$	0.53	$	0.51		$	1.07	$	0.99
Diluted	$	0.53	$	0.50		$	1.06	$	0.98
Other information:
Dividends declared per common share	$	0.10	$	0.08		$	0.20	$	0.16

The accompanying notes are an integral part of these statements.

4

CARBO CERAMICS INC.

CONSOLIDATED STATEMENTS OF CASH FLOWS

($ in thousands)
(Unaudited)

	Six months ended
	June 30,
	2006			2005
Operating activities
Net income	$	25,846		$	23,771
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation		8,952			6,202
Amortization		363			316
Provision for doubtful accounts		416			348
Deferred income taxes		445			1,261
Excess tax benefits from stock-based compensation		(334	)		—
Loss on disposal of assets		—			95
Foreign currency transaction gain		(640	)		—
Non-cash stock compensation expense		1,539			452
Earnings in equity-method investee		(30	)		(95	)
Changes in operating assets and liabilities:
Trade accounts receivable		(4,141	)		(7,628	)
Inventories		(8,016	)		(577	)
Prepaid expenses and other current assets		(1,162	)		(1,056	)
Other long-term assets		108			—
Accounts payable		(1,643	)		39
Accrued payroll and benefits		(1,491	)		(758	)
Accrued freight		(202	)		573
Accrued utilities		(362	)		(270	)
Accrued income taxes		11,860			(4,197	)
Other accrued expenses		4,355			451
Net cash provided by operating activities		35,863			18,927
Investing activities
Capital expenditures, net		(36,766	)		(21,245	)
Investment in equity-method investee		—			(611	)
Purchases of short-term investments		(25,190	)		(69,675	)
Proceeds from maturities of short-term investments		25,950			58,850
Net cash used in investing activities		(36,006	)		(32,681	)
Financing activities
Proceeds from exercise of stock options		543			354
Dividends paid		(4,866	)		(3,842	)
Excess tax benefits from stock-based compensation		334			—
Net cash used in financing activities		(3,989	)		(3,488	)
Net decrease in cash and cash equivalents		(4,132	)		(17,242	)
Effect of exchange rate changes on cash		(4	)		(26	)
Cash and cash equivalents at beginning of period		19,695			33,990
Cash and cash equivalents at end of period	$	15,559		$	16,722
Supplemental cash flow information
Income taxes paid	$	1,529		$	16,440

The accompanying notes are an integral part of these statements.

5

CARBO CERAMICS INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

($ in thousands, except per share data)
(Unaudited)

1. Basis of Presentation

     The accompanying unaudited consolidated financial statements of CARBO Ceramics Inc. have been prepared in accordance with accounting principles generally accepted in the United States for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by accounting principles generally accepted in the United States for complete financial statements. In the opinion of management, all adjustments, consisting only of normal recurring adjustments, considered necessary for a fair presentation have been included. The results of the interim periods presented herein are not necessarily indicative of the results to be expected for any other interim period or the full year. The consolidated balance sheet as of December 31, 2005 has been derived from the audited financial statements at that date. These financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto for the year ended December 31, 2005 included in the Company’s annual report on Form 10-K for the year ended December 31, 2005.

     The consolidated financial statements include the accounts of CARBO Ceramics Inc. and its operating subsidiaries (the “Company”). The significant operating subsidiaries include: CARBO Ceramics (China) Company Limited, CARBO Ceramics (Eurasia) LLC, and Pinnacle Technologies, Inc. The consolidated financial statements also include a 49% interest in a fracture-related services company in Canada, acquired in April 2005, that is reported under the equity method of accounting. All significant intercompany transactions have been eliminated.

2. Earnings Per Share

     The following table sets forth the computation of basic and diluted earnings per share:

	Three months ended				Six months ended
	June 30,				June 30,
	2006		2005		2006		2005
Numerator for basic and diluted earnings per share:
Net income	$	12,862	$	12,177	$	25,846	$	23,771
Denominator:
Denominator for basic earnings per share—
Weighted-average shares		24,274,498		23,971,245		24,259,042		23,961,903
Effect of dilutive securities:
Employee stock options		111,071		179,875		115,542		180,935
Nonvested stock awards		15,371		8,168		17,939		9,888
Dilutive potential common shares		126,442		188,043		133,481		190,823
Denominator for diluted earnings per share—
Adjusted weighted-average shares		24,400,940		24,159,288		24,392,523		24,152,726
Basic earnings per share	$	0.53	$	0.51	$	1.07	$	0.99
Diluted earnings per share	$	0.53	$	0.50	$	1.06	$	0.98

     During the six months ended June 30, 2006, employees exercised stock options to acquire 28,236 common shares at a weighted-average exercise price of $19.23 per share and restrictions lapsed on 25,311 nonvested shares. The Company recognized a related income tax benefit, of which $449 was credited directly to additional paid-in capital within shareholders’ equity.

     During the six months ended June 30, 2005, employees exercised stock options to acquire 22,200 common shares at a weighted-average exercise price of $15.95 per share and restrictions lapsed on 9,021 nonvested shares. The Company recognized a related income tax benefit, of which $270 was credited directly to additional paid-in capital within shareholders’ equity.

6

3. Stock-Based Compensation

     The Company has three stock-based compensation plans: a restricted stock plan and two stock option plans. The restricted stock plan provides for granting shares of Common Stock in the form of restricted stock awards to employees and non-employee directors of the Company. Under the restricted stock plan, the Company may issue up to 375,000 shares, plus (i) the number of shares that are forfeited, and (ii) the number of shares that are withheld from the participants to satisfy tax withholding obligations. No more than 75,000 shares may be granted to any single employee. One-third of the shares subject to award vest (i.e., transfer and forfeiture restrictions on these shares are lifted) on each of the first three anniversaries of the grant date. All unvested shares granted to an individual vest when the individual reaches age 62. The stock option plans provide for granting options to purchase shares of the Company’s Common Stock to employees and non-employee directors. Under the stock option plans, the Company may grant options for up to 2,175,000 shares. The exercise price of each option generally is equal to the market price on the date of grant. The maximum term of an option is ten years and options generally become exercisable (i.e., vest) proportionately on each of the first four anniversaries of the grant date. As of June 30, 2006, 254,357 shares were available for issuance under the restricted stock plan and 52,650 shares were available for issuance under the stock option plans.

     Prior to January 1, 2006 the Company accounted for its stock-based compensation plans using the intrinsic value method under the recognition and measurement provisions of APB Opinion No. 25, Accounting for Stock Issued to Employees (“APB 25”), and related interpretations as permitted by FASB Statement No. 123, Accounting for Stock-Based Compensation (“SFAS 123”). Under the intrinsic value method, compensation expense was recognized in the income statement to the extent the exercise price of the award was less than the market value of the underlying common stock. Since the Company historically has granted stock options with an exercise price equal to the market price on the date of grant, stock option awards had no intrinsic value and, therefore, no compensation expense was recognized. Because restricted stock awards had no exercise price, the resulting intrinsic value was equal to the market price on the date of grant and recognized as compensation expense on a straight-line basis over the vesting period of each award. Pro forma disclosures were provided to illustrate the effects on net income and earnings per share as if the Company had applied the fair value recognition provisions of SFAS 123 and recognized expense for both restricted stock awards and stock option awards.

     Effective January 1, 2006 the Company adopted the fair value recognition provisions of FASB Statement No. 123(R), Share-Based Payment (“SFAS 123(R)”), which is a revision of SFAS 123 and supersedes APB 25. SFAS 123(R) requires the Company to recognize compensation expense in the income statement for all share-based payments to employees. Pro forma disclosure is no longer an alternative. The Company elected to adopt SFAS 123(R) using the modified prospective transition method, under which compensation expense includes: (a) compensation cost for all share-based payments granted prior to, but not yet vested as of December 31, 2005, based on the grant date fair value estimated in accordance with the original provisions of SFAS 123 used in the Company’s pro forma disclosures, and (b) compensation cost for all share-based payments granted on or after January 1, 2006, based on the grant-date fair value estimated in accordance with the provisions of SFAS 123(R). Results for prior periods have not been restated as permitted under the modified prospective approach; therefore pro forma disclosures will continue to be provided for periods prior to January 1, 2006.

     Under SFAS 123(R), the cost of employee services received in exchange for stock is measured based on the grant-date fair value. The Company recognizes that cost on a straight-line basis over the period during which an employee is required to provide service in exchange for the award (usually the vesting period). The fair value of stock options is estimated using a Black-Scholes option-pricing model and the fair value of restricted stock is determined based on the market price of the Company’s Common Stock on the date of grant. Compensation expense is recognized only for share based payments expected to vest; therefore the Company estimates forfeitures at the time of grant based on historical forfeiture rates and future expectations and reduces compensation expense accordingly. Forfeiture rates are revised, if necessary, in subsequent periods, with the Company ultimately recognizing expense only on awards that actually vest. Excess tax benefits, as defined in SFAS 123(R), are recognized as additions to paid-in capital.

     As a result of adopting SFAS 123(R), the Company’s income before income taxes for the three and six months ended June 30, 2006 was lower by $99 and $206, respectively, than it would have been if the Company had continued to account for stock-based compensation under APB 25. Net income for the three and six months ended June 30, 2006 was lower by $62 and $130, respectively. Diluted earnings per share were unchanged by the adoption of SFAS 123(R) for the three months ended June 30, 2006 but were lower by $0.01 per share for the six months ended June 30, 2006. Prior to adoption of SFAS 123(R), the Company presented

7

all tax benefits of deductions resulting from stock compensation as operating cash flows in the statement of cash flows. SFAS 123(R) requires the cash flows from tax benefits resulting from tax deductions in excess of compensation cost recognized in the income statement (excess tax benefits) to be classified as financing cash flows. The $334 excess tax benefit classified as a financing cash inflow for the six months ended June 30, 2006 would have been classified as an operating cash inflow if the Company had not adopted SFAS 123(R). Under SFAS 123(R), the Company’s unearned stock compensation balance of $2,135 included in shareholder equity at December 31, 2005 was reclassified to additional paid-in capital during the quarter ended March 31, 2006.

     The following table illustrates the pro forma effect on prior year net income and earnings per share as if the Company had applied the fair value recognition provisions of SFAS 123 to the Company’s stock-based employee compensation during those periods:

	Three months ended			Six months ended
	June 30, 2005			June 30, 2005
Net income, as reported	$	12,177		$	23,771
Add: Stock-based employee compensation expense included in reported net income, net of related tax effects		148			284
Deduct: Total stock-based compensation expense determined under fair value based method for all awards, net of related tax effects		(316	)		(705	)
Pro forma net income	$	12,009		$	23,350
Earnings per share:
Basic — as reported	$	0.51		$	0.99
Basic — pro forma	$	0.50		$	0.97
Diluted — as reported	$	0.50		$	0.98
Diluted — pro forma	$	0.50		$	0.97

     A summary of stock option activity and related information for the six months ended June 30, 2006 is presented below:

				Weighted-		Aggregate
				Average		Intrinsic
	Options			Exercise Price		Value
Outstanding at January 1, 2006		291,248		$	22.16
Granted		—
Exercised		(28,236	)	$	19.23
Forfeited		—
Outstanding at June 30, 2006		263,012		$	22.47	$	7,012
Exercisable at June 30, 2006		231,383		$	21.34	$	6,430

     As of June 30, 2006, there was $308 of total unrecognized compensation cost related to stock options granted under the plans. The weighted-average remaining contractual term of options outstanding at June 30, 2006 is 5.5 years. There have been no stock options granted since 2004.

     A summary of restricted stock activity and related information for the six months ended June 30, 2006 is presented below:

				Weighted-
				Average
				Grant-Date
	Shares			Fair Value
Nonvested at January 1, 2006		58,634		$	47.03
Granted		55,510		$	57.96
Vested		(25,311	)	$	50.43
Forfeited		(2,522	)	$	50.26
Nonvested at June 30, 2006		86,311		$	52.97

     As of June 30, 2006, there was $3,643 of total unrecognized compensation cost related to restricted shares granted under the plan. That cost is expected to be recognized over a weighted-average period of 2.2 years.

8

4. Segment Information

     The Company has two operating segments: 1) Proppant and 2) Fracture and Reservoir Diagnostics. Services and software sold by the Fracture and Reservoir Diagnostics segment are provided through the Company’s wholly-owned subsidiary Pinnacle Technologies, Inc. (“Pinnacle”).

     Goodwill totaling $21,840 arising from the Company’s acquisition of Pinnacle is not assigned to an operating segment because that information is not used by the Company’s chief operating decision maker in allocating resources. An intersegment note receivable totaling $14,786 at June 30, 2006 and the costs of the Company’s corporate offices are reported in the Proppant segment. Intersegment sales are not material.

     Summarized financial information for the Company’s reportable segments is shown in the following table:

			Fracture
			and
			Reservoir
	Proppant		Diagnostics		Total
Three Months Ended June 30, 2006
Revenues from external customers	$	65,670	$	7,815	$	73,485
Income before income taxes		18,846		517		19,363
Three Months Ended June 30, 2005
Revenues from external customers	$	57,132	$	6,702	$	63,834
Income before income taxes		18,575		556		19,131
Six Months Ended June 30, 2006
Revenues from external customers	$	132,670	$	15,093	$	147,763
Income before income taxes		38,451		1,229		39,680
Segment assets as of June 30, 2006		354,829		31,088		385,917
Six Months Ended June 30, 2005
Revenues from external customers	$	112,293	$	12,709	$	125,002
Income before income taxes		36,422		853		37,275

5. Dividends Paid

     On April 18, 2006, the Board of Directors declared a cash dividend of $0.10 per common share payable to shareholders of record on April 28, 2006. The dividend was paid on May 15, 2006.

6. Comprehensive Income

     Comprehensive income, which includes net income and all other changes in equity during a period except those resulting from investments and distributions to owners, was as follows:

	Three months ended					Six months ended
	June 30,					June 30,
	2006		2005			2006		2005
Net income	$	12,862	$	12,177		$	25,846	$	23,771
Foreign currency translation adjustment		428		(25	)		823		(26	)
Comprehensive income	$	13,290	$	12,152		$	26,669	$	23,745

7. Legal Proceedings

     The Company is subject to legal proceedings, claims and litigation arising in the ordinary course of business. While the outcome of these matters is currently not determinable, management does not expect that the ultimate cost to resolve these matters will have a material adverse effect on the Company’s consolidated financial position, results of operations, or cash flows.

9

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

Business

The Company manufactures ceramic proppant and provides services that are used in the hydraulic fracturing of natural gas and oil wells. Goods and services are provided through two operating segments: 1) Proppant and 2) Fracture and Reservoir Diagnostics. The Company’s Proppant segment manufactures and sells ceramic proppants. The Company’s Fracture and Reservoir Diagnostics segment provides fracture mapping and reservoir diagnostic services, sells fracture simulation software and provides engineering services to oil and gas companies worldwide. These services and software are provided through the Company’s wholly-owned subsidiary, Pinnacle Technologies, Inc.

Critical Accounting Policies

The consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States, which require the Company to make estimates and assumptions (see Note 1 to the consolidated financial statements included in the annual report on Form 10-K for the year ended December 31, 2005). The Company believes that some of its accounting policies involve a higher degree of judgment and complexity than others. Critical accounting policies for the Company include revenue recognition, estimating the recoverability of accounts receivable, inventory valuation, accounting for income taxes, accounting for long-lived assets and accounting for legal contingencies. Critical accounting policies are discussed more fully in the annual report on Form 10-K for the year ended December 31, 2005 and there have been no changes in the Company’s evaluation of its critical accounting policies since the preparation of that report.

Results of Operations

Three Months Ended June 30, 2006

Revenues. Consolidated revenues of $73.5 million for the quarter ended June 30, 2006 increased 15% compared to $63.8 million in revenues for the quarter ended June 30, 2005. The improvement was due to increases in both the sales volume and average selling price of the Company’s ceramic proppant and an increase in revenues from the Fracture and Reservoir Diagnostics segment.

Proppant segment revenues of $65.7 million for the quarter ended June 30, 2006 surpassed revenues of $57.1 million for the same period in 2005 by 15% as a result of a 7% increase in the average selling price of proppant and a 7% increase in proppant sales volume. Worldwide proppant sales totaled 204 million pounds for the quarter compared to 190 million pounds for the second quarter of 2005. The increased sales volume was primarily the result of record sales in the U.S., which increased 20% compared to the second quarter of 2005. Canadian sales were slowed by the normal seasonal decline in drilling activity associated with the spring thaw, but increased 22% compared to last year’s second quarter. These sales volume increases were due to continued strong demand caused by increased natural gas drilling activity in the U.S. and Canada, combined with increased market share in certain geographic markets and improved product availability made possible by the Company’s new Toomsboro, Georgia manufacturing facility, which began production at the beginning of this year. Overseas sales volume declined 21 percent compared to last year’s second quarter principally due to decreased sales volume in Russia. While proppant sales in Russia reached their highest level since last year’s third quarter, activity in the region remains slow due to an increase in freight costs and tariffs on imported products. The Company is addressing this situation through the construction of a manufacturing facility in Kopeysk, Russia. Excluding results in Russia, sales volume in overseas export markets was down 4% from the previous year with strong activity in China, West Africa and North Africa offset by a decline in sales in the Middle East.

The average selling price of proppant in the second quarter of 2006 was $0.322 per pound, an increase of 7% compared to the second quarter of 2005 average selling price of $0.300 per pound. The higher average selling price was because of increases in list prices that went into effect in June 2005 and November 2005. The impact of these increases was partially offset by a shift in the mix of products produced and sold toward the Company’s lower-priced lightweight proppant.

Fracture and Reservoir Diagnostics segment revenues of $7.8 million for the quarter ended June 30, 2006 exceeded revenues of $6.7 million for the same period in 2005 by 16%. The increase was primarily due to

10

continued growth in the fracture mapping and reservoir diagnostics businesses, attributable to increased hydraulic fracturing activity in North America, and a price increase instituted in January 2006.

Gross Profit. Consolidated gross profit for the second quarter of 2006 was $27.4 million, or 37% of revenues, compared to $25.6 million, or 40% of revenues, for the second quarter of 2005. Gross profit increased by 7% compared to last year’s second quarter as a result of increased revenues in both the Proppant and Fracture and Reservoir Diagnostics segments. The decline in gross profit as a percentage of revenues was primarily due to a decrease in the margin on proppant sales, which was partially offset by an improvement in the margin for fracture and reservoir diagnostics.

Proppant segment gross profit of $24.3 million for the second quarter of 2006 increased 4% compared to gross profit of $23.2 million for the second quarter of 2005 as a result of increased sales volume. Gross profit as a percentage of revenues declined to 37% in the second quarter of 2006 from 41% in the second quarter of 2005 primarily as a result of higher prices paid for natural gas and raw materials used to manufacture proppant. The Company’s spending for natural gas delivered to its U.S. manufacturing facilities during the quarter increased by 49% compared to the second quarter of 2005.

Fracture and Reservoir Diagnostics segment gross profit for the second quarter of 2006 was $3.1 million, or 40% of revenues, compared to $2.4 million, or 35% of revenues, for the second quarter of 2005. The increase in gross profit margin was primarily due to a price increase instituted in January 2006 and increased utilization of staff and equipment.

Selling, General and Administrative (SG&A) and Other Operating Expenses. Consolidated SG&A expenses and other operating expenses were $8.8 million and $0.1 million, respectively, for the second quarter of 2006 compared to $6.8 million and $0.3 million, respectively, for the corresponding period in 2005. As a percentage of revenues, SG&A expenses were 12.0% for the quarter ended June 30, 2006 compared to 10.6% for the quarter ended June 30, 2005.

Proppant segment SG&A expenses totaled $6.2 million for the second quarter of 2006 compared to $4.9 million for the corresponding period in 2005. SG&A expenses increased mostly due to higher administrative expenses and professional fees associated with the Company’s growth, increased marketing activity and increased stock compensation expense. As a percentage of revenues, proppant segment SG&A expenses increased from 8.6% to 9.5% due primarily to accelerated expense recognition for restricted stock awarded in the second quarter of 2006 to directors of the Company. Under the Company’s restricted stock plan, the vesting of shares is accelerated (i.e., transfer and forfeiture restrictions are lifted immediately) when an individual reaches retirement age. As four directors were above normal retirement age (as defined in Company’s restricted stock plan) at the time of the grant, the expense for these grants was recognized immediately upon issuance. Other operating expenses of $0.1 million in 2006 consisted of final startup costs for the Toomsboro facility and startup costs for proppant resin-coating equipment at the Company’s China facility, while other operating expenses of $0.3 in 2005 consisted of startup costs for the Toomsboro plant and the write-off of equipment removed from service at the New Iberia facility.

Fracture and Reservoir Diagnostics segment SG&A expenses totaled $2.6 million for the second quarter of 2006 and $1.9 million for the corresponding period in 2005. The increase was primarily due to increased research and development spending and greater marketing and administrative expenses necessary to support higher sales activity.

Income Tax Expense. Consolidated income tax expense was $6.5 million for the quarter ended June 30, 2006 and $7.0 million for quarter ended June 30, 2005. Income tax expense decreased $0.5 million due to a reduction of net deferred income tax liabilities resulting from changes in state taxes, primarily related to a tax law change in Texas that will reduce the Company’s future tax liability in that state. Accordingly, the effective tax rate declined to 33.6% for the second quarter of 2006 compared to 36.3% for the same period a year ago. The effective tax rate for the remainder of 2006 is expected to be approximately 36.0%.

Six Months Ended June 30, 2006

Revenues. Consolidated revenues of $147.8 million for the six months ended June 30, 2006 exceeded revenues of $125.0 million for the same period in 2005 by 18%. The improvement in revenues was largely due to a 12% increase in the average selling price of ceramic proppant.

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Proppant segment revenues of $132.7 million for the six months ended June 30, 2006 exceeded revenues of $112.3 million for the same period in 2005 by 18%. The growth was driven primarily by a 12% increase in the average selling price of proppant along with a 5% increase in sales volume. Worldwide proppant sales totaled a mid-year record 413 million pounds in the first half of 2006 compared to 392 million pounds in the first half of 2005. A year over year increase in the natural gas rig count in North America created additional demand for the Company’s proppant products, and the augmented production capacity provided by the new Toomsboro facility enabled the Company to capitalize on that demand and increase year over year sales volume in the U.S. and Canada by 20% and 9%, respectively. Overseas sales volume declined 26% primarily due to a decrease in Russia, where the Company’s sales have been adversely impacted by an increase in freight costs and tariffs on imported products. Excluding Russia, overseas sales increased 12% over the first half of 2005. The average selling price per pound of ceramic proppant for the first half of 2006 was $0.321 versus $0.287 for the first half of 2005. The higher average selling price was because of increases in list prices that went into effect in June 2005 and November 2005.

Fracture and Reservoir Diagnostics segment revenues of $15.1 million for the six months ended June 30, 2006 exceeded revenues of $12.7 million for the same period in 2005 by 19%. The growth was driven primarily by an increase in demand for fracture mapping in North America and growth in the reservoir diagnostics business, and a price increase instituted in January 2006.

Gross Profit. Consolidated gross profit for the six months ended June 30, 2006 was $54.8 million, or 37% of revenues, compared to $50.5 million, or 40% of revenues, for the same period in 2005. The 9% increase in gross profit was the result of year over year improvements in both the Proppant segment and Fracture and Reservoir Diagnostics segment, while the decline in gross profit as a percentage of revenues was primarily due to a decrease in the margin on proppant sales.

Proppant segment gross profit for the six months ended June 30, 2006 was $48.6 million, or 37% of revenues, compared to $46.0 million, or 41% of revenues, for the same period in 2005. Gross profit increased 6% due to increased sales volume but decreased as a percentage of revenues because sales price increases did not fully offset higher costs for natural gas and raw materials.

Fracture and Reservoir Diagnostics segment gross profit for the six months ended June 30, 2006 was $6.2 million, or 41% of revenues, compared to $4.5 million, or 36% of revenues, for the same period in 2005. The increase in gross profit margin was primarily due to a price increase instituted in January 2006 and increased utilization of staff and equipment.

Selling, General and Administrative (SG&A) and Other Operating Expenses. Consolidated SG&A expenses and other operating expenses were $16.3 million and $0.4 million, respectively, for the six months ended June 30, 2006 compared to $13.8 million and $0.3 million, respectively, for the six months ended June 30, 2005. As a percentage of revenues, SG&A expenses remained unchanged at 11.0% for the first half of 2006 compared to the same period in 2005.

Proppant segment SG&A expenses totaled $11.5 million for the six months ended June 30, 2005 compared to $10.2 million for the six months ended June 30, 2005. SG&A expenses increased mostly because of higher administrative expenses and professional fees associated with the Company’s growth, expenses related to the search for a new president, increased marketing activity, and increased stock compensation expense on restricted stock awards to the Company’s directors. As a percentage of revenues, SG&A expenses dropped slightly to 8.6% in 2006 from 9.1% in 2005. Other operating expenses of $0.4 million in 2006 and $0.3 million in 2005 consisted mostly of start-up costs associated with the new manufacturing facility in Toomsboro, Georgia that began production in January 2006.

Fracture and Reservoir Diagnostics segment SG&A expenses totaled $4.8 million for the six months ended June 30, 2006 compared to $3.6 million for the six months ended June 30, 2005. The increase was primarily due to greater marketing and administrative expenses necessary to support higher revenues and increased spending on technology development.

Income Tax Expense. Consolidated income tax expense was $13.8 million for the six months ended June 30, 2006 and $13.5 million for the six months ended June 30, 2005. Income tax expense increased with the increase in taxable income but was partially offset by a $0.5 million reduction of net deferred income tax liabilities resulting from changes in state taxes, primarily related to a tax law change in Texas which will reduce the Company’s future tax liability in that state. Accordingly, the effective tax rate was 34.9% for the first half

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of 2006 compared to 36.2% for the first half of 2005. The effective tax rate for the remainder of 2006 is expected to be approximately 36.0%.

Liquidity and Capital Resources

At June 30, 2006, the Company had cash and cash equivalents of $15.6 million and short-term investments of $41.2 million compared to cash and cash equivalents of $19.7 million and short-term investments of $42.0 million at December 31, 2005. The Company generated $35.9 million cash from operations, of which $11.4 million originated from the deferral of income tax payments resulting from the extension of tax payment deadlines to August 28, 2006 for those tax payers affected by Hurricane Katrina. The Company also received $0.5 million proceeds from employee exercises of stock options, retained $0.3 million cash from excess tax benefits relating to stock-based compensation to employees and received $0.8 million for net purchases and maturities of short-term investments. Uses of cash included $36.8 million of capital spending and $4.8 million of cash dividends. Major capital spending included $14.5 million on a new proppant manufacturing facility in Kopeysk, Russia, which is expected to be completed in the fourth quarter of 2006 at an estimated total cost of $42 million, $6.9 million on a new proppant manufacturing facility in Toomsboro, Georgia, which was completed slightly below planned expenditure of $62 million and began operating in the first quarter of 2006, and $6.8 million to add a second production line at the Toomsboro facility, which is expected to be completed in the third quarter of 2007 and to add 250 million pounds of capacity to that facility at an estimated total cost of $54 million.

The Company believes that the relatively high prices for oil and natural gas in the futures market will continue to spur drilling and fracturing activity worldwide. Consequently, the Company expects demand for its products to remain strong. Production from the new Toomsboro facility during the second quarter of 2006 was slightly below 75% of total expected capacity but is still expected to reach 100% of the total expected capacity of 250 million pounds per year by the end of this year. The Company has twelve production lines located at its five manufacturing locations worldwide and will adjust production to meet demand as necessary in future periods.

Subject to its financial condition, the amount of funds generated from operations and the level of capital expenditures, the Company’s current intention is to continue to pay quarterly dividends to shareholders of its Common Stock. On April 18, 2006, the Company’s Board of Directors approved the payment of a quarterly cash dividend of $0.10 per share to shareholders of the Company’s Common Stock on April 28, 2006. The Company has total projected capital expenditures of approximately $40 million for the remainder of 2006, including spending to complete its manufacturing facility in Kopeysk, Russia, to expand its Toomsboro, Georgia manufacturing facility, to expand its distribution facilities and to acquire or construct additional fracture mapping tools.

The Company maintains an unsecured line of credit of $10.0 million. As of June 30, 2006, there was no outstanding debt under the credit agreement. The Company anticipates that cash on hand and available through liquidation of short-term investments, cash provided by operating activities and funds available under its line of credit will be sufficient to meet planned operating expenses, tax obligations and capital expenditures for the next 12 months. The Company also believes that it could acquire additional debt financing, if needed. Based on these assumptions, we believe that the Company’s fixed costs could be met even with a moderate decrease in demand for the Company’s products.

Off-Balance Sheet Arrangements

The Company had no off-balance sheet arrangements as of June 30, 2006.

Forward-Looking Information

The statements in this Form 10-Q that are not historical statements, including statements regarding our future financial and operating performance, are forward-looking statements within the meaning of the federal securities laws. All forward-looking statements are based on management’s current expectations and estimates, which involve risks and uncertainties that could cause actual results to differ materially from those expressed in forward-looking statements. Among these factors are:

• changes in overall economic conditions,

• changes in the cost of raw materials and natural gas used in manufacturing our products,

• changes in demand for our products,

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• changes in the demand for, or price of, oil and natural gas,

• risks of increased competition,

• technological, manufacturing and product development risks,

• loss of key customers,

• changes in foreign and domestic government regulations,

• changes in foreign and domestic political and legislative risks,

• the risks of war and international and domestic terrorism,

• risks associated with foreign operations and foreign currency exchange rates and controls,

• weather-related risks and other risks and uncertainties.

Additional factors that could affect our future results or events are described from time to time in our Securities and Exchange Commission reports. See in particular our Form 10-K for the fiscal year ended December 31, 2005 under the caption “Risk Factors” and similar disclosures in subsequently filed reports with the Securities and Exchange Commission. We assume no obligation to update forward-looking statements, except as required by law.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The Company’s major market risk exposure is to foreign currency fluctuations that could impact its investments in China and Russia. When necessary, the Company may enter into forward foreign exchange contracts to hedge the impact of foreign currency fluctuations. There were no such foreign exchange contracts outstanding at June 30, 2006. The Company has a $10.0 million line of credit with its primary commercial bank. Under the terms of the revolving credit agreement, the Company may elect to pay interest at either a fluctuating base rate established by the bank from time to time or at a rate based on the rate established in the London inter-bank market. As of June 30, 2006, there was no outstanding debt under the credit agreement. The Company does not believe that it has any material exposure to market risk associated with interest rates.

ITEM 4. CONTROLS AND PROCEDURES

(a) Evaluation of Disclosure Controls and Procedures

Disclosure controls and procedures are designed to ensure that information required to be disclosed in the reports filed or submitted under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed in the reports filed under the Exchange Act is accumulated and communicated to management, including the Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure.

As of the end of the quarter ended June 30, 2006, management carried out an evaluation, under the supervision and with the participation of the Company’s Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of the Company’s disclosure controls and procedures. There are inherent limitations to the effectiveness of any system of disclosure controls and procedures, including the possibility of human error and the circumvention of the controls and procedures. Accordingly, even effective disclosure controls and procedures can only provide reasonable assurance of achieving their control objectives. Based upon such evaluation and as of the end of the quarter for which this report is made, the Chief Executive Officer and Chief Financial Officer concluded that the Company’s disclosure controls and procedures are effective to provide reasonable assurance that information required to be disclosed in the reports the Company files and submits under the Exchange Act is recorded, processed, summarized and reported as and when required.

(b) Changes in Internal Control over Financial Reporting

There were no changes in the Company’s internal control over financial reporting during the quarter ended June 30, 2006 that materially affected, or are reasonably likely to materially affect, those controls.

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PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

Not applicable

ITEM 1A. RISK FACTORS

Not applicable

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

During the three month period ended June 30, 2006, the Company credited 579 aggregate shares of Common Stock to bookkeeping accounts for three non-employee directors under the CARBO Ceramics Inc. Director Deferred Fee Plan as a result of such directors’ prior fee deferral elections. The fees so deferred were denominated in a number of shares of the Company’s Common Stock determined by reference to the closing price of a share of Common Stock on the New York Stock Exchange on the day that the fees otherwise would have been paid. Shares of Common Stock equal to the number of shares credited to a non-employee director’s account will be issued to the director on the later of (a) a date certain selected by the director on the date of his or her first fee deferral election or (b) the first date on which he or she ceases to be a director. These transactions are exempt from the registration requirements of the Securities Act of 1933, as amended, pursuant to Section 4(2) thereof.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

     Not applicable

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

a. The Annual Meeting of Shareholders of Carbo Ceramics Inc. was held on April 18, 2006.

b. The following matters were submitted to a vote at the meeting:

(1) The election of the following nominees as directors of Carbo Ceramics Inc. Votes representing 21,765,257 share of common stock were cast. The vote with respect to each nominee was as follows:

Nominee	For		Withheld
Claude E. Cooke, Jr.		21,506,226		259,031
Chad C. Deaton		21,117,080		648,177
H. E. Lentz, Jr.		21,490,803		274,454
William C. Morris		21,342,132		423,125
John J. Murphy		21,506,151		259,106
Jesse P. Orsini		21,582,517		182,740
Robert S. Rubin		21,500,108		265,149

(2) The approval of certain amendments to the CARBO Ceramics Inc. 2004 Long-Term Incentive Plan primarily to permit non-employee Directors to receive grants under such Plan and to provide for an acceleration of vesting upon retirement (as more fully described on Page 19 of the Company’s Proxy Statement filed with the Securities and Exchange Commission on March 17, 2006). Votes representing 19,591,107 share of common stock were cast. Results of the vote were as follows: 18,758,297 for, 433,169 against, and 399,641 abstained.

(3) The ratification of the appointment of Ernst & Young LLP as independent accountants to audit the consolidated financial statements of CARBO Ceramics Inc. for the year 2005. Votes representing 21,765,257 share of common stock were cast. Results of the vote were as follows: 21,503,137 for, 258,550 against, and 3,570 abstained.

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ITEM 5. OTHER INFORMATION

     Not applicable

ITEM 6. EXHIBITS

The following exhibits are filed as part of, or incorporated by reference into, this Quarterly Report on Form 10-Q:

10.1 Amendment No. 1 to the 2004 CARBO Ceramics Inc. Long-Term Incentive Plan (incorporated by reference to Annex A of CARBO Ceramics Inc.’s Definitive Proxy Statement for the 2006 Annual Meeting of Shareholders, filed with the Securities and Exchange Commission on March 20, 2006).

10.2 Form of Non-Employee Director Restricted Stock Award Agreement (incorporated by reference to Exhibit 10.2 of CARBO Ceramics Inc.’s Current Report on Form 8-K , filed with the Securities and Exchange Commission on April 24, 2006).

10.3 Form of Officer Restricted Stock Award Agreement (incorporated by reference to Exhibit 10.3 of CARBO Ceramics Inc.’s Current Report on Form 8-K , filed with the Securities and Exchange Commission on April 24, 2006).

31.1 Rule 13a-14(a)/15d-14(a) Certification by Gary A. Kolstad.

31.2 Rule 13a-14(a)/15d-14(a) Certification by Paul G. Vitek.

32 Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

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SIGNATURES

     Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

CARBO CERAMICS INC.
 

/s/ Gary A. Kolstad  

Gary A. Kolstad 

President and Chief Executive Officer 

/s/ Paul G. Vitek  

Paul G. Vitek 

Sr. Vice President, Finance and
Chief Financial Officer 

Date: August 1, 2006

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EXHIBIT INDEX

EXHIBIT	DESCRIPTION
10.1	Amendment No. 1 to the 2004 CARBO Ceramics Inc. Long-Term Incentive Plan (incorporated by reference to Annex A of CARBO Ceramics Inc.’s Definitive Proxy Statement for the 2006 Annual Meeting of Shareholders, filed with the Securities and Exchange Commission on March 20, 2006).
10.2	Form of Non-Employee Director Restricted Stock Award Agreement (incorporated by reference to Exhibit 10.2 of CARBO Ceramics Inc.’s Current Report on Form 8-K , filed with the Securities and Exchange Commission on April 24, 2006).
10.3	Form of Officer Restricted Stock Award Agreement (incorporated by reference to Exhibit 10.3 of CARBO Ceramics Inc.’s Current Report on Form 8-K , filed with the Securities and Exchange Commission on April 24, 2006).
31.1	Rule 13a-14(a)/15d-14(a) Certification by Gary A. Kolstad.
31.2	Rule 13a-14(a)/15d-14(a) Certification by Paul G. Vitek.
32	Certification pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

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