UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment 3)

(Name of Issuer)                Active Power, Inc.  

(Title of Class of Securities)  Common Stock

(CUSIP Number)                  00504W308                                               

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

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)

CUSIP No.                 00504W308 

1.Names of Reporting Persons.

Laurence W.Lytton

2. Check the Appropriate Box if a Member of a Group (See Instructions)

a).......................................................................... 

(b).......................................................................... 

3.SEC Use Only 

4.Citizenship or Place of Organization 

USA

5.Sole Voting Power               649,374

6.Shared Voting Power             4,000

7.Sole Dispositive Power          649,374

8.Shared Dispositive Power        4,000

9.Aggregate Amount Beneficially Owned by Each Reporting 
Person                    
653,374

10.Check if the Aggregate Amount in Row (9) Excludes Certain Shares 
(See Instructions).................................

11.Percent of Class Represented by Amount in Row (9) 

2.8%

12.Type of Reporting Person (See Instructions)

IN

Item 1.

(a)Name of Issuer         Active Power, Inc.  

(b)Address of Issuer's Principal Executive Offices

2128 W. Braker Lane, BK12, 
Austin, Texas 78758

Item 2.

(a)Name of Person Filing  Laurence W. Lytton

(b)Address of Principal Business Office or, if none, Residence

467 CPW 
N.Y., NY  10025

(c)Citizenship                    USA

(d)Title of Class of Securities   Common

(e)CUSIP Number                   00504W308  

Item 3.   not applicable

Item 4.Ownership.

(a)Amount beneficially owned: 653,374 shares consisting of
490,860 shares held by the reporting person, 61,982 held in
the AWL Family LLC, 39,588 held in the IKL Trust, 33,000 held
in the KLL Family Trust, 14,000 held in the WWL Family Trust,
and 13,944 shares held in other related accounts.

(b)Percent of class:              2.8%

(c)Number of shares as to which the person has:

(i)Sole power to vote or to direct the vote       649,374.

(ii)Shared power to vote or to direct the vote      4,000. 

(iii)Sole power to dispose or to direct the disposition of  649,374.

(iv)Shared power to dispose or to direct the disposition of  4,000.

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 ].          

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

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

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. 
___02/12/16____________________________
Date 
____s/ Laurence W. Lytton____________________________
Signature 
_____Laurence W. Lytton___________________________
Name/Title