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Filing Details

Accession Number:: 0000905718-18-000470
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2018-05-09 17:02:36
Reporting Period:: 2018-05-07

Accepted Time:: 2018-05-09 17:02:36
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1551693	Sientra Inc.	SIEN	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1526068	Timothy Haines	C/O 420 South Fairview, Suite 200 Santa Barbara CA 93117		Yes	No	No	Yes

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	Acquisiton	2018-05-07	281,482	$13.50	2,480,494	No	4	P	Indirect	See Notes

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	P	Indirect	See Notes

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	31,546	Direct

Footnotes

Consists of (i) 1,240,247 shares held of record by Abingworth Bioventures V LP ("ABV V"), and (ii) 1,240,247 shares held of record by Abingworth Bioventures V Co-Invest Growth Equity Fund LP ("AGE"). ABV V and AGE are collectively referred to as the "Abingworth Funds." The investment manager of the Abingworth Funds is Abingworth LLP ("Abingworth"). Abingworth Bioventures V GP LP ("Abingworth GP"), a Scottish limited partnership, serves as the general partner of each of the Abingworth Funds. Abingworth General Partner V LLP, a Scottish limited liability partnership, serves as the general partner of Abingworth GP. Abingworth GP (acting by its general partner Abingworth General Partner V LLP) has delegated to Abingworth all investment and dispositive power over the shares held by the Abingworth Funds. The reporting person holds the reported securities indirectly through Abingworth.
The reporting person is part of an investment committee of Abingworth, which approves investment and voting decisions by a majority vote, and no individual member has the sole control or voting power over the shares held by the Abingworth Funds. From time to time, the investment committee may delegate investment and voting authority over certain securities held by the Abingworth Funds to employees of Abingworth subject to the supervision and oversight of the investment committee, including any limits on such authority imposed by the investment committee in its discretion and the right of the investment committee to revoke such authority at any time.
The reporting person disclaims beneficial ownership of all shares held of record by the Abingworth Funds. This report shall not be deemed an admission that the reporting person, Abingworth or any other person is the beneficial owner of the securities reported herein for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.