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
X	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* DOINA ANTHONY C (Last) (First) (Middle) 400 RESEARCH PARKWAY (Street) MERIDEN CT 06450 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol CUNO INC [ CUNO ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Vice President
	3. Date of Earliest Transaction (Month/Day/Year) 08/02/2005
	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	08/02/2005		D		8,952	D	$72(1)	0	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
Employee Stock Option (Right to Buy)	$14.125	08/02/2005		D			4,000	11/17/2000(2)	11/16/2008	Common Stock	4,000	$57.875(2)	0	D
Employee Stock Option (Right to Exercise)	$19.75	08/02/2005		D			9,000	01/11/2002(3)	01/10/2010	Common Stock	9,000	$52.25(3)	0	D
Employee Stock Option (Right to Buy)	$27.875	08/02/2005		D			7,590	12/01/2002(4)	11/30/2010	Common Stock	7,590	$44.125(4)	0	D
Employee Stock Option (Right to Buy)	$29.15	08/02/2005		D			6,932	12/01/2003(5)	11/30/2011	Common Stock	6,932	$42.85(5)	0	D
Employee Stock Option (Right to Buy)	$33	08/02/2005		D			7,000	12/02/2004(6)	12/01/2012	Common Stock	7,000	$39(6)	0	D
Employee Stock Option (Right to Buy)	$37.9	08/02/2005		D			10,000	07/16/2005(7)	07/15/2013	Common Stock	10,000	$34.1(7)	0	D
Employee Stock Option (Right to Buy)	$43.79	08/02/2005		D			4,000	12/01/2005(8)	11/30/2013	Common Stock	4,000	$28.21(8)	0	D
Stock Appreciation Right	$52.43	08/02/2005		D			2,400	03/09/2007(9)	03/08/2015	Common Stock	2,400	$19.57(9)	0	D

Explanation of Responses:

1. Disposed of pursuant to merger agreement between issuer and 3M Corporation in a cash for shares transaction.

2. This option, which provided for vesting in two equal annual installments beginning November 17, 2000, was cancelled in the merger in exchange for a cash payment of $231,500, representing the difference between the option exercise price and the merger agreement price of $72 per share.

3. This option, which provided for vesting in two equal annual installments beginning January 11, 2002, was cancelled in the merger in exchange for a cash payment of $470,250, representing the difference between the option exercise price and the merger agreement price of $72 per share.

4. This option, which provided for vesting in two equal annual installments beginning December 1, 2002, was cancelled in the merger in exchange for a cash payment of $334,908.75, representing the difference between the option exercise price and the merger agreement price of $72 per share.

5. This option, which provided for vesting in two equal annual installments beginning December 1, 2003, was cancelled in the merger in exchange for a cash payment of $297,036.20, representing the difference between the option exercise price and the merger agreement price of $72 per share.

6. This option, which provided for vesting in two equal annual installments beginning December 2, 2004, was cancelled inthe merger in exchange for a cash payment of $273,000, representing the difference between the option exercise price and the merger agreement price of $72 per share.

7. This option, which provided for vesting in two equal annual installments beginning on July 16, 2005, was cancelled in the merger in exchange for a cash payment of $341,000, representing the difference between the option exercise price and the merger agreement price of $72 per share.

8. This option, which provided for vesting in two equal annual installments beginning December 1, 1005, was cancelled in the merger in exchange for a cash payment of $112,480, representing the difference between the option exercise price and the merger agreement price of $72 per share.

9. This SAR, which provided for vesting in two equal annual installments beginning MArch 9, 2007, was cancelled in the merger in exchange for a cash payment of $46,968, which represents the difference between the grant price and the merger agreement price of $72 per share.

	Anthony Doina	08/04/2005
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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