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	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	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* STATE FARM MUTUAL AUTOMOBILE INSURANCE CO (Last) (First) (Middle) ONE STATE FARM PLAZA (Street) BLOOMINGTON IL 61710 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol METABOLIX, INC. [ MBLX ]	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) 04/03/2007
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	04/03/2007		X		381,335(1)	A	$0.1224	2,151,117	D
Common stock	04/03/2007		X		35,795(1)	A	$13.2142	2,186,912	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Warrant (right to buy) C97, C96R	$0.1224	04/03/2007		X			384,069	04/03/2007(2)	11/04/2008	Common Stock	384,069	$0	0	D
Warrant (right to buy) C-119, C-182	$13.2142	04/03/2007		X			154,469	04/03/2007(2)	04/12/2007	Common stock	154,469	$0	0	D

Explanation of Responses:

1. On April 3, 2007, the date of the exercise of the four warrants, the Issuer's common stock had a value of $17.20 per share, and thus the four warrants allowing State Farm Mutual Automobile Insurance Company ("State Farm") to purchase the Issuer's common stock at less than $17.20 per share were "in-the-money." State Farm chose to exercise its four warrants on April 3, 2007 by making a "net issue election" as allowed by each warrant. Under this election, State Farm elected to pay the conversion or exercise price of the warrants by tendering shares of common stock to be received upon conversion. Therefore, State Farm received fewer shares than each warrant entitled it to receive if State Farm had paid the conversion or exercise price in cash.

2. These warrants, which entitled the holder to purchase shares of the Issuer's common stock at a set price before the warrant's specified expiration date, were fully vested and exercisable.

	/s/ Michael L Tipsord, Vice Chairman, Chief Financial Officer and Treasurer on behalf of State Farm Mutual Automobile Insurance Company	04/05/2007
	** Signature of Reporting Person	Date
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* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
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