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*
Carlyle Group Management L.L.C.	

(Last)	(First)	(Middle)	
C/O THE CARLYLE GROUP	
1001 PENNSYLVANIA AVE. NW, SUITE 220S	

(Street) 
WASHINGTON	DC	20004	

(City)	(State)	(Zip)	
	2. Issuer Name and Ticker or Trading Symbol 
Allison Transmission Holdings Inc [ ALSN ] 	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)
04/25/2014 		
	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	04/25/2014		S		12,500,000	D	$29.78 	22,821,250	I	See Footnote(1) 	
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*
Carlyle Group Management L.L.C.	

(Last)	(First)	(Middle)	
C/O THE CARLYLE GROUP	
1001 PENNSYLVANIA AVE. NW, SUITE 220S	

(Street) 
WASHINGTON	DC	20004	

(City)	(State)	(Zip)	
	
1. Name and Address of Reporting Person*
Carlyle Group L.P.	

(Last)	(First)	(Middle)	
C/O THE CARLYLE GROUP	
1001 PENNSYLVANIA AVE. NW, SUITE 220S	

(Street) 
WASHINGTON	DC	20004	

(City)	(State)	(Zip)	
	
1. Name and Address of Reporting Person*
Carlyle Holdings I GP Inc.	

(Last)	(First)	(Middle)	
C/O THE CARLYLE GROUP	
1001 PENNSYLVANIA AVE. NW, SUITE 220S	

(Street) 
WASHINGTON	DC	20004	

(City)	(State)	(Zip)	
	
1. Name and Address of Reporting Person*
Carlyle Holdings I GP Sub L.L.C.	

(Last)	(First)	(Middle)	
C/O THE CARLYLE GROUP	
1001 PENNSYLVANIA AVE. NW, SUITE 220S	

(Street) 
WASHINGTON	DC	20004	

(City)	(State)	(Zip)	
	
1. Name and Address of Reporting Person*
Carlyle Holdings I L.P.	

(Last)	(First)	(Middle)	
C/O THE CARLYLE GROUP	
1001 PENNSYLVANIA AVE. NW, SUITE 220S	

(Street) 
WASHINGTON	DC	20004	

(City)	(State)	(Zip)	
	
1. Name and Address of Reporting Person*
TC Group, LLC	

(Last)	(First)	(Middle)	
C/O THE CARLYLE GROUP	
1001 PENNSYLVANIA AVE. NW, SUITE 220S	

(Street) 
WASHINGTON	DC	20004	

(City)	(State)	(Zip)	
	
1. Name and Address of Reporting Person*
TC Group IV Managing GP, L.L.C.	

(Last)	(First)	(Middle)	
C/O THE CARLYLE GROUP	
1001 PENNSYLVANIA AVE. NW, SUITE 220S	

(Street) 
WASHINGTON	DC	20004	

(City)	(State)	(Zip)	
	
1. Name and Address of Reporting Person*
Carlyle Partners IV AT Holdings, L.P.	

(Last)	(First)	(Middle)	
C/O THE CARLYLE GROUP	
1001 PENNSYLVANIA AVE. NW, SUITE 220S	

(Street) 
WASHINGTON	DC	20004	

(City)	(State)	(Zip)	
	
Explanation of Responses:	
1. Carlyle Partners IV AT Holdings, L.P. is the record holder of these shares. Carlyle Group Management L.L.C. is the general partner of The Carlyle Group L.P., which is a publicly traded entity listed on NASDAQ. The Carlyle Group L.P. is the sole shareholder of Carlyle Holdings I GP Inc., which is the managing member of Carlyle Holdings I GP Sub L.L.C., which is the general partner of Carlyle Holdings I L.P., which is the managing member of TC Group, L.L.C., which is the managing member of TC Group IV Managing GP, L.L.C., which is the general partner of Carlyle Partners IV AT Holdings, L.P.	
Remarks:	
	
	CARLYLE GROUP MANAGEMENT L.L.C., By: /s/ Jeremy W. Anderson, attorney-in-fact	04/28/2014	
	THE CARLYLE GROUP L.P., By: Carlyle Group Management L.L.C., its general partner, By: /s/ Jeremy W. Anderson, attorney-in-fact	04/28/2014	
	CARLYLE HOLDINGS I GP INC., By: /s/ Jeremy W. Anderson, attorney-in-fact	04/28/2014	
	CARLYLE HOLDINGS I GP SUB L.L.C., By: Carlyle Holdings I GP Inc., its managing member, By: /s/ Jeremy W. Anderson, attorney-in-fact	04/28/2014	
	CARLYLE HOLDINGS I L.P., By: Carlyle Holdings I GP Sub L.L.C., its general partner, By: Carlyle Holdings I GP Inc., its managing member, By: /s/ Jeremy W. Anderson, attorney-in-fact	04/28/2014	
	TC GROUP, L.L.C., By: Carlyle Holdings I L.P., its managing member By: /s/ Jeremy W. Anderson, attorney-in-fact	04/28/2014	
	TC GROUP IV MANAGING GP, L.L.C., By: TC Group, L.L.C., its managing member, By: Carlyle Holdings I L.P., its managing member, By: /s/ Jeremy W. Anderson, attorney-in-fact	04/28/2014	
	CARLYLE PARTNERS IV AT HOLDINGS, L.P., By: TC Group IV Managing GP, L.L.C., its general partner, By: TC Group, L.L.C., its managing member, By: Carlyle Holdings I L.P., its managing member, By: /s/ Jeremy W. Anderson, attorney-in-fact	04/28/2014	
	** 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).	
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.	
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