SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
KINDERHOOK PARTNERS, LP

(Last) (First) (Middle)
TWO EXECUTIVE DRIVE
SUITE 585

(Street)
FORT LEE NJ 07024

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
ACTIVE POWER INC [ ACPW ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
03/07/2012
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
X Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 03/07/2012 P 8,823,529 A $0.68 17,632,985 D(1)(2)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
1. Name and Address of Reporting Person*
KINDERHOOK PARTNERS, LP

(Last) (First) (Middle)
TWO EXECUTIVE DRIVE
SUITE 585

(Street)
FORT LEE NJ 07024

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
KINDERHOOK GP LLC

(Last) (First) (Middle)
TWO EXECUTIVE DRIVE
SUITE 585

(Street)
FORT LEE NJ 07024

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
KINDERHOOK CAPITAL MANAGEMENT, LLC

(Last) (First) (Middle)
TWO EXECUTIVE DRIVE
SUITE 585

(Street)
FORT LEE NJ 07024

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
Shah Tushar

(Last) (First) (Middle)
TWO EXECUTIVE DRIVE
SUITE 585

(Street)
FORT LEE NJ 07024

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
CLEARMAN STEPHEN J

(Last) (First) (Middle)
TWO EXECUTIVE DRIVE
SUITE 585

(Street)
FORT LEE NJ 07024

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
Explanation of Responses:
1. Kinderhook Capital Management, LLC serves as the investment adviser to Kinderhook Partners, LP (the "Partnership"). Kinderhook GP, LLC serves as the general partner (the "General Partner") to the Partnership. Messrs. Tushar Shah and Stephen Clearman serve as the General Partner's managing members and as Kinderhook Capital Management, LLC's managing members and, in such capacities, are responsible for making investment decisions with respect to the Partnership. As a result, Mr. Shah and Mr. Clearman may be deemed to control such entities. Accordingly, Mr. Shah and Mr. Clearman may be deemed to have a beneficial interest in the shares of Common Stock by virtue of their indirect control of the Partnership's, the General Partner's and Kinderhook Capital Management, LLC's power to vote and/or dispose of the shares of Common Stock.
2. Each of Mr. Shah and Mr. Clearman disclaim beneficial ownership of the shares of Common Stock except to the extent of his pecuniary interest, if any, therein. Kinderhook Capital Management, LLC specifically disclaims beneficial ownership in the shares of Common Stock reported herein except to the extent of its pecuniary interest, if any, therein.
/s/ Tushar Shah, Managing Member of Kinderhook GP, LLC, the General Partner of Kinderhook Partners, LP 03/08/2012
/s/ Tushar Shah, Managing Member of Kinderhook GP, LLC 03/08/2012
/s/ Tushar Shah, Managing Member of Kinderhook Capital Management, LLC 03/08/2012
/s/ Tushar Shah 03/08/2012
/s/ Stephen J. Clearman 03/08/2012
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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