13D Filing: Berkshire Partners Holdings LLC and Transdigm Group Inc (TDG)

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JOINT FILING UNDERTAKING
The undersigned, being duly authorized thereunto, hereby execute this agreement as an exhibit to this amendment to Schedule 13D to evidence the agreement of the below-named parties, in accordance with the rules promulgated pursuant to the Securities Exchange Act of 1934, to file this amendment to Schedule 13D jointly on behalf of each such party.
The execution and filing of this agreement shall not be construed as an admission that the below-named parties are a group, or have agreed to act as a group.
DATED:  May 16, 2017
BERKSHIRE PARTNERS HOLDINGS LLC
By:    /s/ Sharlyn C. Heslam      
         Name: Sharlyn C. Heslam
         Title: Managing Director
BPSP, L.P.
By:   Berkshire Partners Holdings LLC,
        its General Partner
By:   /s/ Sharlyn C. Heslam      
        Name: Sharlyn C. Heslam
        Title: Managing Director
BERKSHIRE PARTNERS LLC
By:   BPSP, L.P.,
         its Managing Member
By:   Berkshire Partners Holdings LLC,
        its General Partner
By:   /s/ Sharlyn C. Heslam      
        Name: Sharlyn C. Heslam
        Title: Managing Director
STOCKBRIDGE PARTNERS LLC
By:
BPSP, L.P.,
its Managing Member
By:
Berkshire Partners Holdings LLC,
its General Partner
By:
/s/ Sharlyn C. Heslam      
Name: Sharlyn C. Heslam
Title: Managing Director

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