SEC Form 4 · accession 0001209191-16-122297

Acacia Communications, Inc. · ACIA

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

Reporting owner

Director

Period of report

May 18, 2016

Accepted (ET)

May 20, 2016 · 5:54 pm EDT

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^F1,F2	May 18, 2016	C	12,091,554	—	A	12,091,554	I	By Matrix Partners VIII, L.P.
Common Stock^F1,F3	May 18, 2016	C	6,666	—	A	6,666	I	By Weston & Co. VIII LLC

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	D/I
Series A Convertible Preferred Stock^F2,F1	—	May 18, 2016	C	5,025,960	D	—	—	Common Stock	5,025,960	I
Series B Convertible Preferred Stock^F2,F1	—	May 18, 2016	C	5,056,301	D	—	—	Common Stock	5,056,301	I
Series C Convertible Preferred Stock^F2,F1	—	May 18, 2016	C	1,494,039	D	—	—	Common Stock	1,494,039	I
Series D Convertible Preferred Stock^F2,F1	—	May 18, 2016	C	515,254	D	—	—	Common Stock	515,254	I
Series A Convertible Preferred Stock^F3,F1	—	May 18, 2016	C	2,771	D	—	—	Common Stock	2,771	I
Series B Convertible Preferred Stock^F3,F1	—	May 18, 2016	C	2,787	D	—	—	Common Stock	2,787	I
Series C Convertible Preferred Stock^F3,F1	—	May 18, 2016	C	824	D	—	—	Common Stock	824	I
Series D Convertible Preferred Stock^F3,F1	—	May 18, 2016	C	284	D	—	—	Common Stock	284	I

F1The Series A, B, C and D Convertible Preferred Stock converted into common stock on a one-for-one basis upon the closing of the Company's initial public offering without payment of consideration. The securities had no expiration date.
F2Mr. Reiss is a managing member of Matrix VIII US Management Co., LLC ("Matrix VIII US MC"), which is the sole general partner of Matrix Partners VIII, L.P. ("Matrix VIII"). Mr. Reiss, by virtue of his management position in Matrix VIII US MC, has sole voting and dispositive power with respect to these shares. Mr. Reiss, a member of the board of directors of the Company, disclaims beneficial ownership of these shares, except to the extent of his pecuniary interest therein.
F3These shares are held by Weston & Co. VIII LLC, as nominee for Matrix VIII US MC, which is the beneficial owner of such shares. Matrix VIII US MC is the sole general partner of Matrix Partners VIII, L.P.