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Filing Details

Accession Number:: 0001764925-21-000027
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2021-02-03 17:02:13
Reporting Period:: 2021-02-01

Accepted Time:: 2021-02-03 17:02:13
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1764925	Slack Technologies Inc.	WORK	Services-Prepackaged Software (7372)	264400325

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1775683	Cal Henderson	C/O Slack Technologies, Inc. 500 Howard Street San Francisco, CA 94105	Chief Technology Officer	No	Yes	No	No

Reported Non-Derivative Transactions

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Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Class A Common Stock	Acquisiton	2021-02-01	4,279	$0.00	45,088	No	4	C	Direct
Class A Common Stock	Disposition	2021-02-01	4,279	$42.45	40,809	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	C	Direct
No	4	S	Direct

Reported Derivative Transactions

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Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Class B Common Stock	Restricted Stock Units	Disposition	2021-02-01	11,250	$0.00	11,250	$0.00
Class A Common Stock	Class B Common Stock	Acquisiton	2021-02-01	11,250	$0.00	11,250	$0.00
Class A Common Stock	Class B Common Stock	Disposition	2021-02-01	4,279	$0.00	4,279	$0.00

Remaning Holdings	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
90,000	2026-02-26	No	4	M	Direct
205,932		No	4	M	Direct
201,653		No	4	C	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Class A Common Stock	85,655	Indirect	By trust

Reported Derivative Holdings

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Sec. Name	Sec. Type	Price	Amount	Remaning Holdings	Nature of Ownership
Class A Common Stock	Class B Common Stock	$0.00	13,218,173	13,218,173	Indirect
Class A Common Stock	Class B Common Stock	$0.00	68,721	68,721	Indirect
Class A Common Stock	Class B Common Stock	$0.00	222,200	222,200	Indirect
Class A Common Stock	Class B Common Stock	$0.00	222,200	222,200	Indirect
Class A Common Stock	Class B Common Stock	$0.00	68,721	68,721	Indirect
Class A Common Stock	Class B Common Stock	$0.00	222,200	222,200	Indirect
Class A Common Stock	Class B Common Stock	$0.00	222,200	222,200	Indirect
Class A Common Stock	Class B Common Stock	$0.00	30,044	30,044	Indirect

Amount	Remaning Holdings	Nature of Ownership
13,218,173	13,218,173	Indirect
68,721	68,721	Indirect
222,200	222,200	Indirect
222,200	222,200	Indirect
68,721	68,721	Indirect
222,200	222,200	Indirect
222,200	222,200	Indirect
30,044	30,044	Indirect

Footnotes

Each share of Class B Common Stock is convertible without payment or consideration into one share of Class A Common Stock at the option of the holder and has no expiration date.
Shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units (RSUs).
Shares held of record by Cal Henderson and Rebecca Reeve Henderson, spouse of the Reporting Person, Trustees of The Henderson Family Trust u/a/d/ 7/21/2016.
Each RSU represents the right to receive one share of Class B Common Stock.
The RSUs are subject to time-based and performance-based vesting criteria. The time-based vesting occurs in 16 equal quarterly installments commencing on May 1, 2019, subject to the Reporting Person's continued service with the Issuer on each such date. The performance-based criteria was satisfied upon the Issuer's listing and public trading of its of Class A Common Stock on June 20, 2019.
Shares held of record by Cal Henderson, Trustee of The Cal Henderson 2019 Grantor Retained Annuity Trust dated May 22, 2019.
Shares held of record by First Republic Trust Company of Delaware LLC and Cal Henderson, Trustees of The Theodore Henderson GST Exempt Trust under the Cal Henderson Family 2019 Irrevocable Trust dated May 22, 2019.
Shares held of record by First Republic Trust Company of Delaware LLC and Cal Henderson, Trustees of The William Franklin Henderson GST Exempt Trust under the Cal Henderson Family 2019 Irrevocable Trust dated May 22, 2019.
Shares held of record by Rebecca Reeve Henderson, Trustee of The Rebecca Reeve Henderson 2019 Grantor Retained Annuity Trust dated May 22, 2019.
Shares held of record by Rebecca Reeve Henderson, Trustee of The Rebecca Reeve Henderson 2019 Grantor Retained Annuity Trust dated May 22, 2019; Trustee of the Theodore Henderson GST Exempt Trust under the Rebecca Reeve Henderson Family 2019 Irrevocable Trust dated May 22, 2019; Trustee of the William Franklin Henderson GST Exempt Trust under Rebecca Reeve Henderson Family 2019 Irrevocable Trust dated May 22, 2019; and spouse of the Reporting Person, and as such, may be deemed to be beneficially held by the Reporting Person.
Shares held of record by First Republic Trust Company of Delaware LLC and Rebecca Reeve Henderson, Trustees of The Theodore Henderson GST Exempt Trust under the Rebecca Reeve Henderson Family 2019 Irrevocable Trust dated May 22, 2019.
Shares held of record by First Republic Trust Company of Delaware LLC and Rebecca Reeve Henderson, Trustees of The William Franklin Henderson GST Exempt Trust under the Rebecca Reeve Henderson Family 2019 Irrevocable Trust dated May 22, 2019.
Shares held of record by Rebecca Reeve Henderson, spouse of the Reporting Person, and as such, may be deemed to be beneficially held by the Reporting Person.