SEC Form 4 · accession 0000899243-19-005225

Acacia Communications, Inc. · ACIA

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Stan J Reiss

Director

Period of report

Feb 26, 2019

Accepted (ET)

Feb 28, 2019 · 4:22 pm EST

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0001651235

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F2,F3	Feb 26, 2019	J	1,500,000	$0.00	D	2,146,247	I	By Matrix Partners VIII, L.P.
Common Stock^F5	Feb 26, 2019	J	827	$0.00	D	1,184	I	By Weston & Co. VIII LLC
Common Stock^F3	Feb 26, 2019	J	827	$0.00	A	34,352	I	By Matrix VIII US Management Co., L.L.C.
Common Stock^F3	Feb 26, 2019	J	450,038	$0.00	A	484,390	I	By Matrix VIII US Management Co., L.L.C.
Common Stock^F3	Feb 26, 2019	J	442,849	$0.00	D	41,541	I	By Matrix VIII US Management Co., L.L.C.
Common Stock^F8	Feb 26, 2019	J	3,750	$0.00	A	21,242	I	By The Reiss Family Irrevocable Trust
Common Stock	Feb 26, 2019	J	29,253	$0.00	A	176,263	D

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1Represents 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.
F2The shares are owned directly by Matrix Partners VIII.
F3Matrix 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.
F4Re-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.
F5Matrix 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.
F6Represents the shares received in connection with the pro-rata distribution by Matrix Partners VIII, without consideration to its partners.
F7Represents pro-rata distribution by Matrix VIII US Management Co., without consideration, to its members.
F8Shares held by The Reiss Family Irrevocable Trust. Mr. Reiss is a trustee and beneficiary of the trust.
F9Represents the shares received in connection with the pro-rata distribution by Matrix VIII US Management Co., without consideration, as described in this Form 4.