HENDERSON CAL (Chief Technology Officer) sold 12.4% of their position (5.64K shares) of SLACK TECHNOLOGIES, INC. on the open market

Open‑market sale worth $237.1K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale

HENDERSON CAL

Filed: 5/5/2021ACC: 0001764925-21-000084

InsiderHENDERSON CALCIK 1775683

→

IssuerSLACK TECHNOLOGIES, INC.CIK 1764925

Officer· Chief Technology Officer

Since Jun 2019

-5.64K

Net shares

Net seller

$237.1K

Total sold

Open market trades

0B · 1S

Total transactions

16.89K acquired · 22.52K disposed

Non-Derivative Transactions2

Class A Common Stock

Direct

C · Conversion

+5.64K

Price / share

—

Trade value

—

% of position

14.2%

5/3/2021

39.74K→45.37K

Class A Common Stock

Direct

S · Sale

−5.64K

Price / share

$42.07

Trade value

$237.15K

% of position

12.4%

5/3/2021

45.37K→39.74K

Total

Net shares

+0.00

Net value

-$237.15K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Class A Common Stock Direct	5/3/2021	C · Conversion	+5.64K	—	—	14.2%	39.74K	45.37K
Class A Common Stock Direct	5/3/2021	S · Sale	−5.64K	$42.07	$237.15K	12.4%	45.37K	39.74K
Total			+0.00		-$237.15K

Derivative Transactions3

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Class B Common Stock

11.25K shares

−11.25K

Strike price

Held after

78.75K

Exercisable

—

5/3/2021

Class B Common Stock

Direct

M · Option Exercise

Converts to

Class A Common Stock

11.25K shares

+11.25K

Strike price

Held after

212.90K

Exercisable

—

5/3/2021

Class B Common Stock

Direct

C · Conversion

Converts to

Class A Common Stock

5.64K shares

−5.64K

Strike price

Held after

207.27K

Exercisable

—

5/3/2021

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Restricted Stock Units Direct	Class B Common Stock11.25K shares	5/3/2021	M · Option Exercise	−11.25K	—	78.75K
Class B Common Stock Direct	Class A Common Stock11.25K shares	5/3/2021	M · Option Exercise	+11.25K	—	212.90K
Class B Common Stock Direct	Class A Common Stock5.64K shares	5/3/2021	C · Conversion	−5.64K	—	207.27K

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

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

222.20K

Shares owned

222.20K

Exercise price

Expiration

—

Exercise window

—

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

—

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	—	—	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	—	—	222.20K	222.20K
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
Total				14.27M	14.27M