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Filing Details

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
1657610	J. Christian Rasmussen	C/O Acacia Communications, Inc. Three Mill And Main Place, Suite 400 Maynard MA 01754	Vp Digital Signal Proc&Optics	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2016-10-12	24,415	$88.46	1,006,948	No	4	F	Direct
Common Stock	Disposition	2016-10-13	98,846	$96.50	908,102	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	F	Direct
No	4	S	Direct

Footnotes

Represents shares of common stock that have been withheld by the Company to satisfy its income tax withholding obligations in connection withthe vesting of restricted stock units ("RSUs") that were previously reported by the Reporting Person and does not represent a sale by theReporting Person. Each RSU represents the right to receive one share of common stock upon vesting.
Consists of 883,775 shares of common stock and 123,173 RSUs.
The sale transaction reported on this Form 4 was effected as part of an underwritten public offering of common stock of the Company in which the Reporting Person was a selling stockholder.
Consists of 784,929 shares of common stock and 123,173 RSUs.