SC 13G/A 1 p21-0365sc13ga.htm SIENTRA, INC.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G/A

Under the Securities Exchange Act of 1934
(Amendment No. 1)*

Sientra, Inc.
(Name of Issuer)

Common Stock, $0.01 par value
(Title of Class of Securities)

82621J105
(CUSIP Number)

December 31, 2020
(Date of Event Which Requires Filing of This Statement)


Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

x	Rule 13d-1(b)
¨	Rule 13d-1(c)
¨	Rule 13d-1(d)

(Page 1 of 7 Pages)

______________________________

*The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No. 82621J105

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1	NAME OF REPORTING PERSON Granite Point Capital Management, L.P.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) ¨ (b) ¨
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	5	SOLE VOTING POWER 0
	6	SHARED VOTING POWER 2,396,000 (including 38,900 shares underlying call options)
	7	SOLE DISPOSITIVE POWER 0
	8	SHARED DISPOSITIVE POWER 2,396,000 (including 38,900 shares underlying call options)
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,396,000 (including 38,900 shares underlying call options)
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES			¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 4.7%
12	TYPE OF REPORTING PERSON PN, IA

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1	NAME OF REPORTING PERSON Warren B. Lammert, III
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP		(a) ¨ (b) ¨
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION United States
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:	5	SOLE VOTING POWER 0
	6	SHARED VOTING POWER 2,396,000 (including 38,900 shares underlying call options)
	7	SOLE DISPOSITIVE POWER 0
	8	SHARED DISPOSITIVE POWER 2,396,000 (including 38,900 shares underlying call options)
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,396,000 (including 38,900 shares underlying call options)
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES			¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9) 4.7%
12	TYPE OF REPORTING PERSON IN

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Item 1(a).	NAME OF ISSUER
	The name of the issuer is Sientra, Inc. (the "Company").

Item 1(b).	ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES
	The Company's principal executive offices are located 420 South Fairview Avenue, Suite 200 Santa Barbara, CA.

Item 2(a).	NAME OF PERSON FILING
	This statement is filed by:

	(i)	Granite Point Capital Management, L.P., a limited partnership organized under the laws of the State of Delaware ("GPCM"), as investment manager to certain funds and accounts; and

	(ii)	Warren B. Lammert, III ("Mr. Lammert"), as managing member of GPC and as managing member of GPC 1, LLC, the general partner of GPCM.

	The foregoing persons are hereinafter sometimes collectively referred to as the "Reporting Persons." Any disclosures herein with respect to persons other than the Reporting Persons are made on information and belief after making inquiry to the appropriate party.

	The filing of this statement should not be construed in and of itself as an admission by any Reporting Person as to beneficial ownership of the securities reported herein.

Item 2(b).	ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE
	The address of the business office of each of the Reporting Persons is 109 State Street, 5th Floor, Boston, MA 02109.

Item 2(c).	CITIZENSHIP
	GPCM is a limited partnership organized under the laws of the State of Delaware. Mr. Lammert is a citizen of the United States.

Item 2(d).	TITLE OF CLASS OF SECURITIES
	Common Stock, $0.01 par value (the "Common Stock").

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Item 2(e).	CUSIP NUMBER
	82621J105

Item 3.	IF THIS STATEMENT IS FILED PURSUANT TO Rules 13d-1(b), OR 13d-2(b) OR (c), CHECK WHETHER THE PERSON FILING IS A:
	(a)	¨	Broker or dealer registered under Section 15 of the Act;
	(b)	¨	Bank as defined in Section 3(a)(6) of the Act;
	(c)	¨	Insurance company as defined in Section 3(a)(19) of the Act;
	(d)	¨	Investment company registered under Section 8 of the Investment Company Act of 1940;
	(e)	x	An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);
	(f)	¨	An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F);
	(g)	x	A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G);
	(h)	¨	A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act;
	(i)	¨	A church plan that is excluded from the definition of an investment company under Section 3(c)(14) of the Investment Company Act;
	(j)	¨	A non-U.S. institution in accordance with Rule 13d-1(b)(1)(ii)(J);
	(k)	¨	Group, in accordance with Rule 13d-1(b)(1)(ii)(K).

If filing as a non-U.S. institution in accordance with Rule 13d-1(b)(1)(ii)(J), please

specify the type of institution: ________________________________________

	Item 4.	OWNERSHIP
		The information required by Items 4(a) - (c) is set forth in Rows 5-11 of the cover page for each Reporting Person and is incorporated herein by reference.

		The percentages set forth in this Schedule 13G/A are calculated based on a total of 50,454,122 shares of Common Stock outstanding as of November 2, 2020, as reported in the Company's Quarterly Report on Form 10-Q for the quarterly period September 30, 2020 filed with the Securities and Exchange Commission on November 9, 2020.

Item 5.	OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS
	If this statement is being filed to report the fact that as of the date hereof the Reporting Persons have ceased to be the beneficial owner of more than five percent of the class of securities, check the following: ý

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Item 6.	OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON
	Not applicable.

Item 7.	IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY OR CONTROL PERSON
	Not applicable.

Item 8.	IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP
	Not applicable.

Item 9.	NOTICE OF DISSOLUTION OF GROUP
	Not applicable.

Item 10.	CERTIFICATION
	Each of the Reporting Persons hereby makes the following certification:

	By signing below each Reporting Person certifies that, to the best of his or its knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

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SIGNATURES

After reasonable inquiry and to the best of his or its knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.

DATE: February 12, 2021


GRANITE POINT CAPITAL MANAGEMENT, L.P.
By: GPC 1, LLC, its general partner

/s/ Warren B. Lammert, III
Name: Warren B. Lammert, III
Title: Managing Member

WARREN B. LAMMERT, III

/s/ Warren B. Lammert, III
Warren B. Lammert, III, individually