SEC FORM 4

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

SAMANA CAPITAL, L.P.

(Last)

(First)

(Middle)

283 GREENWICH AVENUE

(Street)

GREENWICH

06830

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
IMMUNOGEN INC [ IMGN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

Director	X	10% Owner
Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
07/31/2009

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

	Form filed by One Reporting Person
X	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	07/31/2009		S		3,500,000	D	$8.64	5,525,200⁽¹⁾⁽²⁾	D⁽¹⁾⁽²⁾

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

1. Name and Address of Reporting Person^*

SAMANA CAPITAL, L.P.

(Last)

(First)

(Middle)

283 GREENWICH AVENUE

(Street)

GREENWICH

06830

(City)

(State)

(Zip)

Relationship of Reporting Person(s) to Issuer

Director	X	10% Owner
Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

MORTON HOLDINGS, INC.

(Last)

(First)

(Middle)

283 GREENWICH AVE

(Street)

GREENWICH

06830

(City)

(State)

(Zip)

Relationship of Reporting Person(s) to Issuer

Director	X	10% Owner
Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

KORSANT PHILIP B

(Last)

(First)

(Middle)

283 GREENWICH AVE

(Street)

GREENWICH

06830

(City)

(State)

(Zip)

Relationship of Reporting Person(s) to Issuer

Director	X	10% Owner
Officer (give title below)		Other (specify below)

Explanation of Responses:

1. This statement is being filed by Samana Capital, L.P. ("Samana Capital"), Morton Holdings, Inc. ("Morton Holdings") and Philip B. Korsant ("Korsant" and collectively with Samana Capital and Morton Holdings, the "Reporting Persons"). Morton Holdings is the general partner of Samana Capital. Korsant is the sole shareholder of Morton Holdings. (Due to SEC formatting limitations, please see continuation in footnote 2)

2. (Continued from footnote 1) Samana Capital is the owner of record of all of the shares of ImmunoGen, Inc. common stock, par value $0.01 per share ("Common Stock"), reported above. The Reporting Persons may each be deemed to have or share voting or investment power over 4,312,500 shares of the Common Stock reported in Column 5 above, but do not have or share voting or investment power above the remaining 1,212,700 shares of Common Stock reported in Column 5 above. Each of the Reporting Persons disclaims beneficial ownership of the shares of Common Stock reported herein, except to the extent of its respective pecuniary interests.

	SAMANA CAPITAL, L.P., By: Morton Holdings, Inc., its general partner, By: /s/ Catherine O'Dwyer, Vice President of Morton Holdings, Inc.	07/31/2009
	MORTON HOLDINGS, INC., By: /s/ Catherine O'Dwyer, Vice President of Morton Holdings, Inc.	07/31/2009
	/s/ Philip B. Korsant	07/31/2009
	** Signature of Reporting Person	Date
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