Tamar Yehoshua - Jul 1, 2021 Form 4 Insider Report for Slack Technologies, Inc. (WORK)

Role: Chief Product Officer
Signature: /s/ David Schellhase, as Attorney-in-Fact
Stock symbol: WORK
Transactions as of: Jul 1, 2021
Transactions value $: -$4,086,615
Form type: 4
Date filed: 7/6/2021, 05:03 PM
Previous filing: Jun 10, 2021
Next filing: Jul 21, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WORK	Class A Common Stock	Conversion of derivative security	$0	+89.2K	+103.38%	$0.00	176K	Jul 1, 2021	Direct	F1
transaction	WORK	Class A Common Stock	Sale	-$2.11M	-47.6K	-27.1%	$44.29	128K	Jul 1, 2021	Direct	F2
transaction	WORK	Class A Common Stock	Sale	-$66.4K	-1.5K	-1.17%	$44.29	126K	Jul 1, 2021	Direct	F2
transaction	WORK	Class A Common Stock	Sale	-$1.91M	-43K	-33.97%	$44.51	83.5K	Jul 2, 2021	Direct	F3, F4

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	WORK	Restricted Stock Units	Options Exercise	$0	-89.2K	-14.29%	$0.00	535K	Jul 1, 2021	Class B Common Stock	89.2K		Direct	F1, F5, F6
transaction	WORK	Class B Common Stock	Options Exercise	$0	+89.2K		$0.00	89.2K	Jul 1, 2021	Class A Common Stock	89.2K		Direct	F1
transaction	WORK	Class B Common Stock	Conversion of derivative security	$0	-89.2K	-100%	$0.00^*	0	Jul 1, 2021	Class A Common Stock	89.2K		Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	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.
F2	Shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of Restricted Stock Units (RSUs).
F3	This transaction was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person.
F4	The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $44.33 to $44.64. 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.
F5	Each RSU represents the right to receive one share of Class B Common Stock.
F6	The RSUs are subject to time-based and performance-based vesting criteria. The time-based vesting occurs in 12 quarterly installments commencing on April 1, 2020 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.