SEC Form 4 · accession 0001179110-16-025225

Acacia Communications, Inc. · ACIA

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

Reporting owner

Peter Y Chung

Director

Period of report

May 18, 2016

Accepted (ET)

May 20, 2016 · 4:03 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,F3,F4	May 18, 2016	C	2,896,329	—	A	2,896,329	I	See Footnotes

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Series D Convertible Preferred Stock^F1,F3,F4,F2	—	May 18, 2016	C	2,896,329	A	—	—	Common Stock	2,896,329	0	I

Explanation of responses

F1The Series D Convertible Preferred Stock converted into common stock on a one-for-one basis upon the closing of Acacia Communications, Inc.'s (the "Issuer") initial public offering without payment of consideration. The Series D Convertible Preferred Stock had no expiration date.
F2Consists of 2,198,853 shares held by Summit Partners Venture Capital Fund III-A. L.P., 666,442 shares held by Summit Partners Venture Capital Fund III-B, L.P., 28,648 shares held by Summit Investors I, LLC and 2,386 shares held by Summit Investors I (UK), L.P.
F3Summit Partners, L.P. is the managing member of Summit Partners VC III, LLC, which is the general partner of Summit Partners VC III, L.P., which is the general partner of each of Summit Partners Venture Capital Fund III-A. L.P. and Summit Partners Venture Capital Fund III-B, L.P. Summit Master Company, LLC is the managing member of Summit Investors Management, LLC, which is the manager of Summit Investors I, LLC, and the general partner of Summit Investors I (UK), L.P. Summit Master Company, LLC, as the managing member of Summit Investors Management, LLC, has delegated investment decisions, including voting and dispositive power, to Summit Partners, L.P. and its investment committee responsible for voting and investment decisions with respect to the Issuer.
F4Summit Partners, L.P., through a three-person investment committee responsible for voting and investment decisions with respect to the Issuer, currently comprised of Martin J. Mannion, Bruce R. Evans and Peter Y. Chung, has voting and dispositive power over the shares held by each of these entities and therefore may be deemed to beneficially own such shares. Mr. Chung is a member of Summit Master Company, LLC. Mr. Chung may be deemed to share beneficial ownership of the shares of the Issuer held of record by the Summit entities and has an indirect pecuniary interest in such shares through his membership in Summit Master Company, LLC. Mr. Chung expressly disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.

Remarks

Exhibit 24 - Power of Attorney