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Filing Details

Accession Number:: 0001764925-19-000380
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2019-11-05 16:53:03
Reporting Period:: 2019-11-01

Accepted Time:: 2019-11-05 16:53:03
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1764925	Slack Technologies Inc.	WORK	Services-Telephone Interconnect Systems (7385)	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	2019-11-01	13,309	$0.00	13,309	No	4	C	Direct
Class A Common Stock	Disposition	2019-11-01	13,309	$21.75	0	No	4	S	Direct
Class A Common Stock	Disposition	2019-11-01	1,500	$21.74	107,500	No	4	S	Indirect	By trust

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

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	2019-11-01	15,255	$0.00	15,255	$0.00
Class A Common Stock	Class B Common Stock	Acquisiton	2019-11-01	15,255	$0.00	15,255	$0.00
Class B Common Stock	Restricted Stock Units	Disposition	2019-11-01	11,250	$0.00	11,250	$0.00
Class A Common Stock	Class B Common Stock	Acquisiton	2019-11-01	11,250	$0.00	11,250	$0.00
Class A Common Stock	Class B Common Stock	Disposition	2019-11-01	13,309	$0.00	13,309	$0.00

Remaning Holdings	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
30,510	2023-04-06	No	4	M	Direct
126,330		No	4	M	Direct
146,250	2026-02-26	No	4	M	Direct
137,580		No	4	M	Direct
124,271		No	4	C	Direct

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	15,268,173	15,268,173	Indirect
Class A Common Stock	Class B Common Stock	$0.00	98,765	98,765	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	98,765	98,765	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

Amount	Remaning Holdings	Nature of Ownership
15,268,173	15,268,173	Indirect
98,765	98,765	Indirect
222,200	222,200	Indirect
222,200	222,200	Indirect
98,765	98,765	Indirect
222,200	222,200	Indirect
222,200	222,200	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).
This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.
The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $21.54 to $21.97. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
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 August 1, 2016, 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 Class A Common Stock on June 20, 2019.
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.
The Shares are 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.