Andreessen Horowitz Fund I-B Form 4 Slack / Equity Partners I, L.L.C. AH ownership change

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Andreessen Horowitz Fund I, L.P.

(Last) (First) (Middle)

2865 SAND HILL ROAD, SUITE 101

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Slack Technologies, Inc. [ WORK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

Director	X	10% Owner
Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
06/07/2019

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

	Form filed by One Reporting Person
X	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Series A Preferred Stock	(1)	06/07/2019		C			13,164,690	(1)	(1)	Class B Common Stock(2)	13,164,690	$0	0	I	By: Andreessen Horowitz Fund I, L.P.(3)
Series B Preferred Stock	(1)	06/07/2019		C			35,222,670	(1)	(1)	Class B Common Stock(2)	35,222,670	$0	0	I	By: Andreessen Horowitz Fund I, L.P.(3)
Series C Preferred Stock	(1)	06/07/2019		C			10,481,400	(1)	(1)	Class B Common Stock(2)	10,481,400	$0	0	I	By: AH Parallel Fund IV, L.P.(4)(5)
Series D Preferred Stock	(1)	06/07/2019		C			5,490,180	(1)	(1)	Class B Common Stock(2)	5,490,180	$0	0	I	By: AH Parallel Fund IV, L.P.(4)(5)
Series D-1 Preferred Stock	(1)	06/07/2019		C			35,190	(1)	(1)	Class B Common Stock(2)	35,190	$0	0	I	By: a16z Seed-III, LLC(6)(7)
Series E Preferred Stock	(1)	06/07/2019		C			97,103	(1)	(1)	Class B Common Stock(2)	97,103	$0	0	I	By: AH Parallel Fund IV, L.P.(4)(5)
Class B Common Stock	(2)	06/07/2019		J(1)		48,387,360		(2)	(2)	Class A Common Stock	48,387,360	$0	48,387,360	I	By:Andreessen Horowitz Fund I, L.P.(3)
Class B Common Stock	(2)	06/07/2019		J(1)		16,068,683		(2)	(2)	Class A Common Stock	16,068,683	$0	18,092,974	I	By: AH Parallel Fund IV, L.P.(4)(5)
Class B Common Stock	(2)	06/07/2019		J(1)		35,190		(2)	(2)	Class A Common Stock	35,190	$0	42,990	I	By: a16z Seed-III, LLC(6)(7)

1. Name and Address of Reporting Person^*

Andreessen Horowitz Fund I, L.P.

(Last) (First) (Middle)

2865 SAND HILL ROAD, SUITE 101

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

1. Name and Address of Reporting Person^*

Andreessen Horowitz Fund I-A, L.P.

(Last) (First) (Middle)

2865 SAND HILL ROAD, SUITE 101

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

1. Name and Address of Reporting Person^*

Andreessen Horowitz Fund I-B, L.P.

(Last) (First) (Middle)

2865 SAND HILL ROAD, SUITE 101

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

1. Name and Address of Reporting Person^*

AH Equity Partners I, L.L.C.

(Last) (First) (Middle)

2865 SAND HILL ROAD, SUITE 101

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

1. Name and Address of Reporting Person^*

Andreessen Marc L

(Last) (First) (Middle)

2865 SAND HILL ROAD, SUITE 101

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

1. Name and Address of Reporting Person^*

HOROWITZ BENJAMIN A

(Last) (First) (Middle)

2865 SAND HILL ROAD, SUITE 101

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

Explanation of Responses:

1. The Series A, Series B, Series C, Series D, Series D-1, and Series E Preferred Stock are each convertible into Class B Common Stock on a 1:1 basis and have no expiration date. Upon the effectiveness of the Issuer's Registration Statement on Form S-1, all shares of preferred stock were converted, in an exempt transaction pursuant to Rule 16b-7, into shares of Class B Common Stock of the Issuer.

2. Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the Reporting Person and has no expiration date.

3. These shares are held of record by Andreessen Horowitz Fund I, L.P., as nominee for Andreessen Horowitz Fund I, L.P., Andreessen Horowitz Fund I-A, L.P. and Andreessen Horowitz Fund I-B, L.P. (collectively, the "AH Fund I Entities"). AH Equity Partners I, L.L.C. ("AH EP I"), the general partner of the AH Fund I Entities, has sole voting and dispositive power with regard to the shares held by the AH Fund I Entities. The managing members of AH EP I are Marc Andreessen and Ben Horowitz. Marc Andreessen and Ben Horowitz share voting and dispositive power with respect to the shares held by the AH Fund I Entities. Such persons and entities disclaim beneficial ownership of the securities held by the AH Fund I Entities and this report shall not be deemed an admission that any such person is the beneficial owner of such securities, except to the extent of his pecuniary interest, if any, in the securities by virtue of his interest in the AH Fund I Entities.

4. These shares are held of record by AH Parallel Fund IV, L.P., for itself and as nominee for AH Parallel Fund IV-A, L.P., AH Parallel Fund IV-B, L.P., and AH Parallel Fund IV-Q, L.P. (collectively the "AH Parallel Fund IV Entities"). AH Equity Partners IV (Parallel), L.L.C. ("AH EP IV Parallel"), the general partner of the AH Parallel Fund IV Entities, has sole voting and dispositive power with regard to the shares held by the AH Parallel Fund IV Entities. The managing members of AH EP IV Parallel are Marc Andreessen and Ben Horowitz. Marc Andreessen and Ben Horowitz share voting and dispositive power with respect to the shares held by the AH Parallel Fund IV Entities

5. (Continued from Footnote 4) Such persons and entities disclaim beneficial ownership of the securities held by the AH Parallel Fund IV Entities and this report shall not be deemed an admission that any such person is the beneficial owner of such securities, except to the extent of his pecuniary interest, if any, in the securities by virtue of his interest in the AH Parallel Fund IV Entities.

6. These shares are held of record by a16z Seed III, LLC ("a16z Seed"). The shares held directly by a16z Seed are indirectly held by Andreessen Horowitz Fund III, L.P., Andreessen Horowitz Fund III-A, L.P., Andreessen Horowitz Fund III-B, L.P., and Andreessen Horowitz Fund III-Q, L.P. (collectively, the "AH Fund III Entities"), the members of a16z Seed. AH Equity Partners III, L.L.C. ("AH EP III"), the general partner of the AH Fund III Entities, has sole voting and dispositive power with regard to the shares held by a16z Seed. The managing members of AH EP III are Marc Andreessen and Ben Horowitz. Marc Andreessen and Ben Horowitz share voting and dispositive power with respect to the shares held by a16z Seed.

7. (Continued from Footnote 6) Such persons and entities disclaim beneficial ownership of the securities held by a16z Seed and this report shall not be deemed an admission that any such person is the beneficial owner of such securities, except to the extent of his pecuniary interest, if any, in the securities by virtue of his interest in a16z Seed.

Remarks:

This Form 4 is the first of three Form 4s filed relating to the same event. Combined, the three reports report the holdings for the following reporting persons: Andreessen Horowitz Fund I, L.P., AH Equity Partners I, L.L.C., AH Parallel Fund IV, L.P., AH Equity Partners IV (Parallel), L.L.C., Marc L. Andreessen, Ben Horowitz, Andreessen Horowitz Fund I-A, L.P., Andreessen Horowitz Fund I-B, L.P., AH Parallel Fund IV-A, L.P., AH Parallel Fund IV-B, L.P., AH Parallel Fund IV-Q, L.P., a16z Seed III, LLC, Andreessen Horowitz Fund III, L.P., Andreessen Horowitz Fund III-A, L.P., Andreessen Horowitz Fund III-B, L.P., Andreessen Horowitz Fund III-Q, L.P. and AH Equity Partners III, L.L.C. This Form 4 has been split into three filings because there are more than 10 reporting persons in total, and the SEC's EDGAR filing system limits a single Form 4 to a maximum of 10 reporting persons.

	Andreessen Horowitz Fund I, L.P. Andreessen Horowitz Fund I-A, L.P. Andreessen Horowitz Fund I-B, L.P. By: AH Equity Partners I, L.L.C. Its: General Partner By: /s/ Scott Kupor Scott Kupor, Chief Operating Officer	06/07/2019
	AH Equity Partners I, L.L.C. By: /s/ Scott Kupor Scott Kupor, Chief Operating Officer	06/07/2019
	Marc Andreessen /s/ Scott Kupor Scott Kupor, attorney-in-fact of Marc Andreessen	06/07/2019
	Ben Horowitz /s/ Scott Kupor Scott Kupor, attorney-in-fact of Ben Horowitz	06/07/2019
	** Signature of Reporting Person	Date
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