LIPSON MATTHEW A. (Chief Legal Officer/ Secretary) sold 97.6% of their position (51.78K shares) of STAMPS.COM INC on the open market

Open‑market sale worth $13.07M — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 6 sales

LIPSON MATTHEW A.

Filed: 10/5/2020ACC: 0001082923-20-000134

InsiderLIPSON MATTHEW A.CIK 1727936

→

IssuerSTAMPS.COM INCCIK 1082923

Officer· Chief Legal Officer/ Secretary

Since Jul 2018

-51.78K

Net shares

Net seller

$13.07M

Total sold

Open market trades

0B · 6S

Total transactions

51.78K acquired · 103.57K disposed

Non-Derivative Transactions7

Common Stock

Direct

M · Option Exercise

+51.78K

Price / share

$112.00

Trade value

$5.80M

% of position

4106.6%

10/1/2020

1.26K→53.05K

Common Stock

Direct

S · Sale

−7.87K

Price / share

$250.71

Trade value

$1.97M

% of position

14.8%

10/1/2020

53.05K→45.17K

Common Stock

Direct

S · Sale

−11.96K

Price / share

$251.60

Trade value

$3.01M

% of position

26.5%

10/1/2020

45.17K→33.21K

Common Stock

Direct

S · Sale

−18.48K

Price / share

$252.76

Trade value

$4.67M

% of position

55.7%

10/1/2020

33.21K→14.73K

Common Stock

Direct

S · Sale

−8.95K

Price / share

$253.44

Trade value

$2.27M

% of position

60.8%

10/1/2020

14.73K→5.77K

Common Stock

Direct

S · Sale

−4.04K

Price / share

$254.43

Trade value

$1.03M

% of position

69.9%

10/1/2020

5.77K→1.74K

Common Stock

Direct

S · Sale

−475.00

Price / share

$255.31

Trade value

$121.27K

% of position

27.4%

10/1/2020

1.74K→1.26K

Total

Net shares

+0.00

Net value

-$7.27M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	10/1/2020	M · Option Exercise	+51.78K	$112.00	$5.80M	4106.6%	1.26K	53.05K
Common Stock Direct	10/1/2020	S · Sale	−7.87K	$250.71	$1.97M	14.8%	53.05K	45.17K
Common Stock Direct	10/1/2020	S · Sale	−11.96K	$251.60	$3.01M	26.5%	45.17K	33.21K
Common Stock Direct	10/1/2020	S · Sale	−18.48K	$252.76	$4.67M	55.7%	33.21K	14.73K
Common Stock Direct	10/1/2020	S · Sale	−8.95K	$253.44	$2.27M	60.8%	14.73K	5.77K
Common Stock Direct	10/1/2020	S · Sale	−4.04K	$254.43	$1.03M	69.9%	5.77K	1.74K
Common Stock Direct	10/1/2020	S · Sale	−475.00	$255.31	$121.27K	27.4%	1.74K	1.26K
Total			+0.00		-$7.27M

Derivative Transactions1

Stock Option (Common Stock)

Direct

M · Option Exercise

Converts to

Common Stock

51.78K shares

−51.78K

Strike price

112.0

Held after

68.22K

Exercisable

—

10/1/2020

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Stock Option (Common Stock) Direct	Common Stock51.78K shares	10/1/2020	M · Option Exercise	−51.78K	112.0	—	68.22K