UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549

SCHEDULE 13G

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


Sientra, Inc.
(Name of Issuer)


Common stock, par value $0.01 per share
(Title of Class of Securities)


82621J105
(CUSIP Number)


December 31, 2015
(Date of Event Which Requires Filing of this Statement)


Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
[_]  Rule 13d-1(b)

[X]  Rule 13d-1(c)

[_]  Rule 13d-1(d)

__________
*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
    
     
1.
NAME OF REPORTING PERSONS
  
 
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
  
     
 
Senzar Asset Management, LLC
  
     
2.
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
   
(a)  [_]
   
(b)  [X]
     
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
  
     
 
580,851
  
     
7.
SOLE DISPOSITIVE POWER
  
     
 
0
  
     
8.
SHARED DISPOSITIVE POWER
  
     
 
580,851
  
     
9.
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     
 
580,851
  
     
10.
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
  
   
[_]
     
11.
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
  
     
 
3.2%
  
     
12.
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
OO, IA
  

CUSIP No.
82621J105
    
     
1.
NAME OF REPORTING PERSONS
  
 
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
  
     
 
Senzar Healthcare Master GP, Ltd.
  
     
2.
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
   
(a)  [_]
   
(b)  [X]
     
3.
SEC USE ONLY
  
     
     
     
4.
CITIZENSHIP OR PLACE OF ORGANIZATION
  
     
 
Cayman Islands
  
     
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
     
5.
SOLE VOTING POWER
  
     
 
0
  
     
6.
SHARED VOTING POWER
  
     
 
570,351
  
     
7.
SOLE DISPOSITIVE POWER
  
     
 
0
  
     
8.
SHARED DISPOSITIVE POWER
  
     
 
570,351
  
     
9.
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     
 
570,351
  
     
10.
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
  
   
[_]
     
11.
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
  
     
 
3.2%
  
     
12.
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
CO
  

CUSIP No.
82621J105
    
     
1.
NAME OF REPORTING PERSONS
  
 
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
  
     
 
Senzar Healthcare Master Fund, LP
  
     
2.
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
   
(a)  [_]
   
(b)  [X]
     
3.
SEC USE ONLY
  
     
     
     
4.
CITIZENSHIP OR PLACE OF ORGANIZATION
  
     
 
Cayman Islands
  
     
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
     
5.
SOLE VOTING POWER
  
     
 
0
  
     
6.
SHARED VOTING POWER
  
     
 
570,351
  
     
7.
SOLE DISPOSITIVE POWER
  
     
 
0
  
     
8.
SHARED DISPOSITIVE POWER
  
     
 
570,351
  
     
9.
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     
 
570,351
  
     
10.
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
  
   
[_]
     
11.
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
  
     
 
3.2%
  
     
12.
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
PN
  

CUSIP No.
82621J105
    
     
1.
NAME OF REPORTING PERSONS
  
 
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
  
     
 
Ajay Bhalla
  
     
2.
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
   
(a)  [_]
   
(b)  [X]
     
3.
SEC USE ONLY
  
     
     
     
4.
CITIZENSHIP OR PLACE OF ORGANIZATION
  
     
 
Canada
  
     
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
     
5.
SOLE VOTING POWER
  
     
 
0
  
     
6.
SHARED VOTING POWER
  
     
 
580,851
  
     
7.
SOLE DISPOSITIVE POWER
  
     
 
0
  
     
8.
SHARED DISPOSITIVE POWER
  
     
 
580,851
  
     
9.
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     
 
580,851
  
     
10.
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
  
   
[_]
     
11.
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
  
     
 
3.2%
  
     
12.
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
IN
  

CUSIP No.
82621J105
    
     
1.
NAME OF REPORTING PERSONS
  
 
I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY)
  
     
 
John R. Yanuklis
  
     
2.
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
   
(a)  [_]
   
(b)  [X]
     
3.
SEC USE ONLY
  
     
     
     
4.
CITIZENSHIP OR PLACE OF ORGANIZATION
  
     
 
United States of America
  
     
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
     
5.
SOLE VOTING POWER
  
     
 
0
  
     
6.
SHARED VOTING POWER
  
     
 
580,851
  
     
7.
SOLE DISPOSITIVE POWER
  
     
 
0
  
     
8.
SHARED DISPOSITIVE POWER
  
     
 
580,851
  
     
9.
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
     
 
580,851
  
     
10.
CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
  
   
[_]
     
11.
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
  
     
 
3.2%
  
     
12.
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
IN
  

CUSIP No.
82621J105
    

Item 1.
(a).
Name of Issuer:
  
       
   
Sientra, Inc.
  
       
 
(b).
Address of issuer's principal executive offices:
  
       
   
420 South Fairview Avenue, Suite 200
 Santa Barbara, California 93117
  
       
Item 2.
(a).
Name of person filing:
  
       
   
Senzar Asset Management, LLC
Senzar Healthcare Master GP, Ltd.
Senzar Healthcare Master Fund, LP
Ajay Bhalla
 John R. Yanuklis
  
       
 
(b).
Address or principal business office or, if none, residence:
  
       
   
Senzar Asset Management, LLC
400 Madison Avenue, Suite 14D
 New York, New York  10017
 
Senzar Healthcare Master GP, Ltd.
Harneys Services (Cayman) Limited
4th Floor, Harbour Place
103 South Church Street
P.O. Box 10240
Grand Cayman KY1-1002
 Cayman Islands
 
Senzar Healthcare Master Fund, LP
c/o Senzar Healthcare Master GP, Ltd.
c/o Harneys Services (Cayman) Limited
4th Floor, Harbour Place
103 South Church Street
P.O. Box 10240
Grand Cayman KY1-1002
 Cayman Islands
 
Ajay Bhalla
John R. Yanuklis
c/o Senzar Asset Management, LLC
400 Madison Avenue, Suite 14D
 New York, New York  10017
  
       
 
(c).
Citizenship:
  
       
   
Senzar Asset Management, LLC – Delaware limited liability company
Senzar Healthcare Master GP, Ltd. – Cayman Islands exempted company
Senzar Healthcare Master Fund, LP – Cayman Islands exempted limited partnership
Ajay Bhalla – Canada
 John R. Yanuklis – United States of America
  
       
 
(d).
Title of class of securities:
  
       
   
Common stock, par value $0.01 per share
  
       
 
(e).
CUSIP No.:
  
       
   
82621J105
  
       

Item 3.
If This Statement is filed pursuant to §§.240.13d-1(b) or 240.13d-2(b), or (c), check whether the person filing is a

   
(a)
[_]
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).
         
   
(b)
[_]
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).
         
   
(c)
[_]
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).
         
   
(d)
[_]
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).
         
   
(e)
[_]
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
         
   
(f)
[_]
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
         
   
(g)
[_]
A parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G);
         
   
(h)
[_]
A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C.1813);
         
   
(i)
[_]
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
         
   
(j)
[_]
A non-U.S. institution in accordance with §240.13d-1(b)(1)(ii)(J);
         
   
(k)
[_]
Group, in accordance with §240.13d-1(b)(1)(ii)(K).  If filing as a non-U.S. institution in accordance with §240.13d-1(b)(1)(ii)(J), please specify the type of institution:
 
Item 4.
Ownership.
  
     
 
Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.
  

 
(a)
Amount beneficially owned:
     
   
Senzar Asset Management, LLC – 580,851 shares
Senzar Healthcare Master GP, Ltd. - 570,351 shares
Senzar Healthcare Master Fund, LP – 570,351 shares
Ajay Bhalla – 580,851 shares
John R. Yanuklis – 580,851 shares

 
(b)
Percent of class:
     
   
Senzar Asset Management, LLC – 3.2%
Senzar Healthcare Master GP, Ltd. – 3.2%
Senzar Healthcare Master Fund, LP – 3.2%
Ajay Bhalla – 3.2%
John R. Yanuklis – 3.2%

 
(c)
Number of shares as to which Senzar Asset Management, LLC has:
     
   
(i)
Sole power to vote or to direct the vote
0
,
         
   
(ii)
Shared power to vote or to direct the vote
580,851
,
         
   
(iii)
Sole power to dispose or to direct the disposition of
0
,
         
   
(iv)
Shared power to dispose or to direct the disposition of
580,851
.
         
   
Number of shares as to which Senzar Healthcare Master GP, Ltd. has:
     
   
(i)
Sole power to vote or to direct the vote
0
,
         
   
(ii)
Shared power to vote or to direct the vote
570,351
,
         
   
(iii)
Sole power to dispose or to direct the disposition of
0
,
         
   
(iv)
Shared power to dispose or to direct the disposition of
570,351
.
         
   
Number of shares as to which Senzar Healthcare Master Fund, LP has:
     
   
(i)
Sole power to vote or to direct the vote
0
,
         
   
(ii)
Shared power to vote or to direct the vote
570,351
,
         
   
(iii)
Sole power to dispose or to direct the disposition of
0
,
         
   
(iv)
Shared power to dispose or to direct the disposition of
570,351
.
         
   
Number of shares as to which Ajay Bhalla has:
     
   
(i)
Sole power to vote or to direct the vote
0
,
         
   
(ii)
Shared power to vote or to direct the vote
580,851
,
         
   
(iii)
Sole power to dispose or to direct the disposition of
0
,
         
   
(iv)
Shared power to dispose or to direct the disposition of
580,851
.
         
   
Number of shares as to which John R. Yanuklis has:
     
   
(i)
Sole power to vote or to direct the vote
0
,
         
   
(ii)
Shared power to vote or to direct the vote
580,851
,
         
   
(iii)
Sole power to dispose or to direct the disposition of
0
,
         
   
(iv)
Shared power to dispose or to direct the disposition of
580,851
.
         

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 person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following  [X].
 
 
Each of the reporting persons has ceased to be the beneficial owner of more than 5% of the class of securities reported herein.
   

Item 6.
Ownership of More Than Five Percent on Behalf of Another Person.
   
 
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified.  A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
   
 
N/A
   

Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
   
 
If a parent holding company or control person has filed this schedule, pursuant to Rule 13d-1(b)(1)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary.  If a parent holding company or control person has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.
   
 
N/A
   

Item 8.
Identification and Classification of Members of the Group.
   
 
If a group has filed this schedule pursuant to §240.13d-1(b)(1)(ii)(J), so indicate under Item 3(j) and attach an exhibit stating the identity and Item 3 classification of each member of the group.  If a group has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identity of each member of the group.
   
 
N/A
   
Item 9.
Notice of Dissolution of Group.
   
 
Notice of dissolution of a group may be furnished as an exhibit stating the date of the dissolution and that all further filings with respect to transactions in the security reported on will be filed, if required, by members of the group, in their individual capacity.  See Item 5.
   
 
N/A
   
Item 10.
Certification.
   
 
By signing below I certify that, to the best of my 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.



SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
Dated:  February 12, 2016
Senzar Asset Management, LLC
   
 
By: /s/ Ajay Bhalla
 
Name:  Ajay Bhalla
 
Title:   Managing Member
   
   
 
Senzar Healthcare Master GP, Ltd.
   
 
By: /s/ Ajay Bhalla
 
Name:  Ajay Bhalla
 
Title:    Director
   
 
Senzar Healthcare Master Fund, LP
   
 
By: Senzar Healthcare Master GP, Ltd.
 
Its general partner
   
 
By: /s/ Ajay Bhalla
 
Name:  Ajay Bhalla
 
Title:   Director
   
 
/s/ Ajay Bhalla
 
Ajay Bhalla
   
   
 
/s/ John R. Yanuklis
 
John R. Yanuklis


The original statement shall be signed by each person on whose behalf the statement is filed or his authorized representative.  If the statement is signed on behalf of a person by his authorized representative other than an executive officer or general partner of the filing person, evidence of the representative's authority to sign on behalf of such person shall be filed with the statement, provided, however, that a power of attorney for this purpose which is already on file with the Commission may be incorporated by reference.  The name and any title of each person who signs the statement shall be typed or printed beneath his signature.
Note.  Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See s.240.13d-7 for other parties for whom copies are to be sent.
Attention.  Intentional misstatements or omissions of fact constitute Federal criminal violations (see 18 U.S.C. 1001).

Exhibit 1
Joint Filing Statement

Statement Pursuant to Rule 13d-1(k)(1)


The undersigned hereby consent and agree to file a joint statement on Schedule 13G under the Securities Exchange Act of 1934, as amended, with respect to the common stock, par value $0.01 per share, of Sientra, Inc. beneficially owned by them, together with any or all amendments thereto, when and if appropriate.  The parties hereto further consent and agree to file this Statement pursuant to Rule 13d-1(k)(1)(iii) as an exhibit to Schedule 13G, thereby incorporating the same into such Schedule 13G.


Dated:  February 12, 2016
Senzar Asset Management, LLC
   
 
By: /s/ Ajay Bhalla
 
Name:  Ajay Bhalla
 
Title:   Managing Member
   
   
 
Senzar Healthcare Master GP, Ltd.
   
 
By: /s/ Ajay Bhalla
 
Name:  Ajay Bhalla
 
Title:    Director
   
 
Senzar Healthcare Master Fund, LP
   
 
By: Senzar Healthcare Master GP, Ltd.
 
Its general partner
   
 
By: /s/ Ajay Bhalla
 
Name:  Ajay Bhalla
 
Title:   Director
   
 
/s/ Ajay Bhalla
 
Ajay Bhalla
   
   
 
/s/ John R. Yanuklis
 
John R. Yanuklis