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Filing Details

Accession Number:: 0000899243-19-007972
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2019-03-15 16:33:45
Reporting Period:: 2019-03-13

Accepted Time:: 2019-03-15 16:33:45
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1651235	Acacia Communications Inc.	ACIA	Semiconductors & Related Devices (3674)	270291921

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1657394	J Stan Reiss	C/O Matrix Partners Viii, L.p. 101 Main Street, 17Th Floor Cambridge MA 02142		Yes	No	No	No

Reported Non-Derivative Transactions

Show Other Fields >>

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2019-03-13	1,000,000	$0.00	0	No	4	J	Indirect	By Matrix Partners VIII, L.P.
Common Stock	Disposition	2019-03-13	552	$0.00	0	No	4	J	Indirect	By Weston & Co. VIII LLC
Common Stock	Acquisiton	2019-03-13	552	$0.00	47,467	No	4	J	Indirect	By Matrix VIII US Management Co., L.L.C.
Common Stock	Acquisiton	2019-03-13	283,326	$0.00	330,793	No	4	J	Indirect	By Matrix VIII US Management Co., L.L.C.
Common Stock	Disposition	2019-03-13	279,343	$0.00	51,450	No	4	J	Indirect	By Matrix VIII US Management Co., L.L.C.
Common Stock	Acquisiton	2019-03-13	2,365	$0.00	26,411	No	4	J	Indirect	By The Reiss Family Irrevocable Trust
Common Stock	Acquisiton	2019-03-13	18,452	$0.00	216,583	No	4	J	Direct
Common Stock	Disposition	2019-03-14	3,409	$53.67	23,002	No	4	S	Indirect	By The Reiss Family Irrevocable Trust
Common Stock	Disposition	2019-03-14	26,591	$53.49	189,992	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	J	Indirect	By Matrix Partners VIII, L.P.
No	4	J	Indirect	By Weston & Co. VIII LLC
No	4	J	Indirect	By Matrix VIII US Management Co., L.L.C.
No	4	J	Indirect	By Matrix VIII US Management Co., L.L.C.
No	4	J	Indirect	By Matrix VIII US Management Co., L.L.C.
No	4	J	Indirect	By The Reiss Family Irrevocable Trust
No	4	J	Direct
No	4	S	Indirect	By The Reiss Family Irrevocable Trust
No	4	S	Direct

Footnotes

Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Matrix Partners VIII, L.P. ("Matrix Partners VIII"), to its partners.
The shares are owned directly by Matrix Partners VIII.
Matrix VIII US Management Co., L.L.C. ("Matrix VIII US Management Co.") is the General Partner of Matrix Partners VIII and disclaims beneficial ownership of the shares owned by Matrix Partners VIII except to the extent of its proportionate pecuniary interest therein. Mr. Reiss, a member of the Board of Directors of the Issuer and a managing member of Matrix VIII US Management Co., has sole voting and dispositive power with respect to these shares. Mr. Reiss disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein.
Re-registration of shares by Weston & Co. VIII L.L.C. ("Weston VIII"), without consideration, in the name of Matrix VIII US Management Co., the beneficial owner of those shares.
Matrix VIII US Management Co. is the beneficial owner of the shares reported herein as being held of record by Weston VIII, and disclaims beneficial ownership of the shares owned by Weston VIII except to the extent of its proportionate pecuniary interest therein. Mr. Reiss, a member of the Board of Directors of the Issuer and a managing member of Matrix VIII US Management Co., has sole voting and dispositive power with respect to these shares. Mr. Reiss disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein.
Represents the shares received in connection with the pro-rata distribution by Matrix Partners VIII, without consideration to its partners.
Represents pro-rata distribution by Matrix VIII US Management Co., without consideration, to its members.
Shares held by The Reiss Family Irrevocable Trust. Mr. Reiss is a trustee and beneficiary of the trust.
Represents the shares received in connection with the pro-rata distribution by Matrix VIII US Management Co., without consideration, as described in this Form 4.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $53.39 to $53.83, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (10) to this Form 4.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $53.38 to $53.85, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (11) to this Form 4.