Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Saint-Clair Guillaume
 2. Date of Event Requiring Statement (Month/Day/Year)
02/03/2011		 3. Issuer Name and Ticker or Trading Symbol
ACETO CORP [ACET]
(Last)
(First)
(Middle)
4 TRI HARBOR COURT		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Int'l VP Pharma Intermediates
 5. If Amendment, Date Original Filed(Month/Day/Year)
02/14/2011
(Street)

PORT WASHINGTON, NY 11050		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 467
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option - right to buy 08/05/2004 08/05/2013 Common Stock 2,250 $ 8.22 D  
Stock Option - right to buy 09/09/2005 09/09/2014 Common Stock 9,000 $ 10.94 D  
Stock Option - right to buy 12/06/2008 12/06/2017 Common Stock 1,500 $ 8.05 D  
Stock Option - right to buy 12/04/2009 12/04/2018 Common Stock 1,500 $ 8.62 D  
Stock Option - right to buy 12/02/2011 12/02/2020 Common Stock 2,500 $ 7.76 D  
Restricted Stock Units   (1)   (1) Common Stock 250 (2) $ (1) D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Saint-Clair Guillaume
4 TRI HARBOR COURT
PORT WASHINGTON, NY 11050		       Int'l VP Pharma Intermediates  

Signatures

/s/ Guillaume Saint-Clair 06/27/2011
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(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).
(1) 700 Restricted Stock Units (RSU's) were granted on December 4, 2008 and vest one-third each year beginning on December 6, 2009. Each RSU represents the contingent right to receive one share of common stock upon vesting. Each RSU aslo accrues dividend equivalents on each date that Aceto pays a cash dividend to holders of common stock generally. RSU's attributable to such dividend equivalents are subject to the same terms and conditions as the RSU's to which such dividend equivalents relate.
(2) 17 additional shares of Restricted Stock Units were erroneously included in the amount reported in the original Form 3 filed 2/14/2011.

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