SEC FORM 3

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^*

DIPALMA DINO

(Last)

(First)

(Middle)

C/O ACME PACKET, INC.

71 THIRD AVENUE

(Street)

BURLINGTON

01803

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
10/12/2006

3. Issuer Name and Ticker or Trading Symbol
ACME PACKET INC [ APKT ]

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

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	VP of Sales & Business Devl.

5. 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 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, $0.001 par value	150,000	D
Common Stock, $0.001 par value	28,729	I	By Spouse⁽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)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	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)
Stock Option (right to buy)	⁽²⁾	09/17/2012	Common Stock	50,000	$0.2	D
Stock Option (right to buy)	⁽³⁾	01/14/2014	Common Stock	50,000	$0.2	D
Stock Option (right to buy)	⁽⁴⁾	08/16/2014	Common Stock	50,000	$0.3	D
Stock Option (right to buy)	⁽⁵⁾	01/19/2015	Common Stock	60,000	$0.55	D
Stock Option (right to buy)	⁽⁶⁾	11/23/2015	Common Stock	30,000	$0.85	D
Stock Option (right to buy)	⁽⁷⁾	12/23/2015	Common Stock	150,000	$1	D

Explanation of Responses:

1. The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for the purposes of Section 16 or for any other purpose.

2. Twenty-five percent of the shares underlying the option vest on September 30, 2003, and the balance of the shares vest in equal monthly installments at the end of each calendar month beginning on October 31, 2003, and ending on September 30, 2006.

3. Twenty-five percent of the shares underlying the option vest on January 31, 2005, and the balance of the shares vest in equal monthly installments at the end of each calendar month beginning on February 28, 2005, and ending on January 31, 2008.

4. Twenty-five percent of the shares underlying the option vest on August 31, 2005, and the balance of the shares vest in equal monthly installments at the end of each calendar month beginning on September 30, 2005, and ending on August 31, 2008.

5. Twenty-five percent of the shares underlying the option vest on January 31, 2006, and the balance of the shares vest in equal monthly installments at the end of each calendar month beginning on February 28, 2006, and ending on January 31, 2009.

6. Twenty-five percent of the shares underlying the option vest on November 30, 2006, and the balance of the shares vest in equal monthly installments at the end of each calendar month beginning on December 31, 2006, and ending on November 30, 2009.

7. Twenty-five percent of the shares underlying the option vest on December 31, 2006, and the balance of the shares vest in equal monthly installments at the end of each calendar month beginning on January 31, 2007, and ending on December 31, 2009.

	/s/ Dino DiPalma	10/12/2006
	** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.