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^*

Lipson Matthew A.

(Last)

(First)

(Middle)

1990 E. GRAND AVE.

(Street)

EL SEGUNDO

90245

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
01/15/2018

3. Issuer Name and Ticker or Trading Symbol
STAMPS.COM INC [ STMP ]

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

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Chief Legal Officer/ Secretary

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	1,931	D

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 (Common Stock)	10/19/2014⁽¹⁾	09/19/2024	Common Stock	11,826	$32.41	D
Stock Option (Common Stock)	10/19/2015⁽¹⁾	09/19/2024	Common Stock	4,174	$32.41	D
Stock Option (Common Stock)	04/02/2015⁽²⁾	03/02/2025	Common Stock	25,000	$58.25	D
Stock Option (Common Stock)	09/01/2017⁽³⁾	04/25/2027	Common Stock	70,000	$112	D

Explanation of Responses:

1. This option had fully vested prior to the date of this Form 3.

2. This option had vested with respect to all but 1,390 shares prior to the date of this Form 3. The option will vest with respect to the remaining shares in two equal installments on February 2, 2018 and March 2, 2018.

3. This option vests in 36 approximately equal monthly installments. The first vesting date was September 1, 2017.

Remarks:

	/s/ David M. Zlotchew, by Power of Attorney for Matthew A. Lipson	01/18/2018
	** 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.