James Nathan Jones - 01 Sep 2021 Form 4 Insider Report for STAMPS.COM INC

Role: CEO of subsidiary ShipStation
Signature: /s/ David M. Zlotchew, Attorney-in-Fact
Issuer symbol: N/A
Transactions as of: 01 Sep 2021
Net transactions value: -$756,684
Form type: 4
Filing time: 03 Sep 2021, 19:11:40 UTC
Previous filing: 03 Aug 2021
Next filing: 07 Oct 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	STMP	Common Stock	Options Exercise	$200,324	+1,042	+164%	$192.25	1,679	01 Sep 2021	Direct
transaction	STMP	Common Stock	Sale	$342,714	-1,042	-62%	$328.90	637	01 Sep 2021	Direct	F1
transaction	STMP	Common Stock	Options Exercise	$73,304	+2,092	+328%	$35.04	2,729	03 Sep 2021	Direct
transaction	STMP	Common Stock	Sale	$687,599	-2,092	-77%	$328.68	637	03 Sep 2021	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	STMP	Stock Option (Common Stock)	Options Exercise	$0	-1,042	-3.7%	$0.000000	27,206	01 Sep 2021	Common Stock	1,042	$192.25	Direct
transaction	STMP	Stock Option	Options Exercise	$0	-2,092	-7.7%	$0.000000	25,114	03 Sep 2021	Common Stock	2,092	$35.04	Direct

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	This Sale was executed pursuant to a prearranged trading plan compliant with Rule 10b5-1.