As Of	Filer	Filing¹	For·On·As	Docs:Size	Issuer		Filing Agent

 3/22/12  Onex Corp.                        4          10% Owner²  2:51K  Allison Transmission Holdings Inc DONNELLEY FIN… File16/FA 
          Allison Executive Investco II LLC
          Allison Executive Investco LLC
          OAH Wind LLC
          Onex Allison Holding Ltd. S.A.R.L.
          Onex American Holdings GP LLC
          Onex American Holdings II LLC
          Onex American Holdings Subco LLC
          Schwartz Gerald W
 3/14/12  Onex Corp.                        3          10% Owner²  2:53K  Allison Transmission Holdings Inc DONNELLEY FIN… File16/FA 
          Allison Executive Investco II LLC
          Allison Executive Investco LLC
          OAH Wind LLC
          Onex Allison Holding Ltd. S.A.R.L.
          Onex American Holdings GP LLC
          Onex American Holdings II LLC
          Onex American Holdings Subco LLC
          Schwartz Gerald W

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¹	Filing/Form Types:
	3	Initial Statement of Beneficial Ownership of Securities by an Insider — Form 3 { The Filer is an Insider² of the Issuer }.
	4	Statement of Changes in Beneficial Ownership of Securities by an Insider — Form 4 { The Filer is an Insider² of the Issuer }.
²	Insider:  The Filer is a Director, Officer, 10% Owner and/or Other “insider” of the Issuer.