SEC Form 3

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 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* Mill Road Capital II, L.P. (Last) (First) (Middle) 382 GREENWICH AVENUE SUITE ONE (Street) GREENWICH CT 06830 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 12/05/2012	3. Issuer Name and Ticker or Trading Symbol AMERICAN PACIFIC CORP [ APFC ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)	5. 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 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	890,896(1)	D(1)

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: 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

1. Name and Address of Reporting Person* Mill Road Capital II, L.P. (Last) (First) (Middle) 382 GREENWICH AVENUE SUITE ONE (Street) GREENWICH CT 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* Mill Road Capital II GP LLC (Last) (First) (Middle) 382 GREENWICH AVENUE SUITE ONE (Street) GREENWICH CT 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* LYNCH THOMAS E (Last) (First) (Middle) 382 GREENWICH AVE SUITE ONE (Street) GREENWICH CT 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* Scharfman Scott (Last) (First) (Middle) 382 GREENWICH AVE SUITE ONE (Street) GREENWICH CT 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. These shares are held directly by Mill Road Capital II, L.P. (the "Fund"). Mill Road Capital GP II LLC (the "GP") is the sole general partner of the Fund with the power to vote (or direct the vote of), and to dispose (or direct the disposal) of, these shares. Thomas E. Lynch and Scott P. Scharfman are Management Committee Directors of the GP with shared authority to vote (or direct the vote of), and to dispose (or direct the disposal of), these shares. Each of the Reporting Persons disclaims beneficial ownership of these shares, except to the extent of his or its pecuniary interest therein, if any.

	Scott P. Scharfman, Management Committee Director of sole general partner on behalf of Mill Road Capital II, L.P.	12/07/2012
	Scott P. Scharfman, Management Committee Director on behalf of Mill Road Capital II GP LLC	12/07/2012
	Scott P. Scharfman on behalf of Thomas E. Lynch, by power of attorney	12/07/2012
	Scott P. Scharfman	12/07/2012
	** 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 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).
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