HENDERSON CAL (Chief Technology Officer) sold 9.5% of their position (4.28K shares) of SLACK TECHNOLOGIES, INC. on the open market

Open‑market sale worth $181.6K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

HENDERSON CAL

Filed: 2/3/2021ACC: 0001764925-21-000027

InsiderHENDERSON CALCIK 1775683

→

IssuerSLACK TECHNOLOGIES, INC.CIK 1764925

Officer· Chief Technology Officer

Since Jun 2019

-4.28K

Net shares

Net seller

$181.6K

Total sold

Open market trades

0B · 1S

Total transactions

15.53K acquired · 19.81K disposed

Non-Derivative Transactions2

Class A Common Stock

Direct

C · Conversion

+4.28K

Price / share

—

Trade value

—

% of position

10.5%

2/1/2021

40.81K→45.09K

Class A Common Stock

Direct

S · Sale

−4.28K

Price / share

$42.45

Trade value

$181.64K

% of position

9.5%

2/1/2021

45.09K→40.81K

Total

Net shares

+0.00

Net value

-$181.64K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	2/1/2021	C · Conversion	+4.28K	—	—	10.5%	40.81K	45.09K
Class A Common Stock Direct	2/1/2021	S · Sale	−4.28K	$42.45	$181.64K	9.5%	45.09K	40.81K
Total			+0.00		-$181.64K

Derivative Transactions3

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Class B Common Stock

11.25K shares

−11.25K

Strike price

Held after

90K

Exercisable

—

2/1/2021

Class B Common Stock

Direct

M · Option Exercise

Converts to

Class A Common Stock

11.25K shares

+11.25K

Strike price

Held after

205.93K

Exercisable

—

2/1/2021

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

4.28K shares

−4.28K

Strike price

Held after

201.65K

Exercisable

—

2/1/2021

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Restricted Stock Units Direct	Class B Common Stock11.25K shares	2/1/2021	M · Option Exercise	−11.25K	—	90K
Class B Common Stock Direct	Class A Common Stock11.25K shares	2/1/2021	M · Option Exercise	+11.25K	—	205.93K
Class B Common Stock Direct	Class A Common Stock4.28K shares	2/1/2021	C · Conversion	−4.28K	—	201.65K

Non-Derivative Holdings (Post-Transaction)1

Class A Common Stock

Indirect

Shares owned85.66K

Total

85.66K indirect85.66K

Security Title	Shares Owned	Ownership Type
Class A Common Stock	85.66K	Indirect
Total	85.66K	85.66K indirect

Derivative Holdings (Post-Transaction)8

Class B Common Stock

Indirect

Underlying security

Class A Common Stock

Underlying shares

13.22M

Shares owned

13.22M

Exercise price

Expiration

—

Exercise window

—

Class B Common Stock

Indirect

Underlying security

Class A Common Stock

Underlying shares

68.72K

Shares owned

68.72K

Exercise price

Expiration

—

Exercise window

—

Class B Common Stock

Indirect

Underlying security

Class A Common Stock

Underlying shares

222.20K

Shares owned

222.20K

Exercise price

Expiration

—

Exercise window

—

Class B Common Stock

Indirect

Underlying security

Class A Common Stock

Underlying shares

30.04K

Shares owned

30.04K

Exercise price

Expiration

—

Exercise window

—

Class B Common Stock

Indirect

Underlying security

Class A Common Stock

Underlying shares

222.20K

Shares owned

222.20K

Exercise price

Expiration

—

Exercise window

—

Class B Common Stock

Indirect

Underlying security

Class A Common Stock

Underlying shares

222.20K

Shares owned

222.20K

Exercise price

Expiration

—

Exercise window

—

Class B Common Stock

Indirect

Underlying security

Class A Common Stock

Underlying shares

68.72K

Shares owned

68.72K

Exercise price

Expiration

—

Exercise window

—

Class B Common Stock

Indirect

Underlying security

Class A Common Stock

Underlying shares

222.20K

Shares owned

222.20K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

14.27M

Owned

14.27M

Security	Underlying	Exercise Window	Expiration	Underlying Shares	Shares Owned
Class B Common Stock Indirect	Class A Common Stock	—	—	13.22M	13.22M
Class B Common Stock Indirect	Class A Common Stock	—	—	68.72K	68.72K
Class B Common Stock Indirect	Class A Common Stock	—	—	222.20K	222.20K
Class B Common Stock Indirect	Class A Common Stock	—	—	30.04K	30.04K
Class B Common Stock Indirect	Class A Common Stock	—	—	222.20K	222.20K
Class B Common Stock Indirect	Class A Common Stock	—	—	222.20K	222.20K
Class B Common Stock Indirect	Class A Common Stock	—	—	68.72K	68.72K
Class B Common Stock Indirect	Class A Common Stock	—	—	222.20K	222.20K
Total				14.27M	14.27M