Exhibit 1
SCHEDULE 13D JOINT FILING AGREEMENT
In accordance with the requirements of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, and subject to the limitations set forth therein, the parties set forth below agree to jointly file the Schedule 13D to which this joint filing agreement is attached, and have duly executed this joint filing agreement as of the date set forth below.
Date: December 16, 2013
| STERIGENICS U.S., L.L.C. | ||
| By: | /s/ Corey H. Grauer | |
| Name: Corey H. Grauer | ||
| Title: Vice President, General Counsel, & Corporate Secretary | ||
| STERIGENICS INTERNATIONAL L.L.C. | ||
| By: | /s/ Corey H. Grauer | |
| Name: Corey H. Grauer | ||
| Title: Vice President, General Counsel, & Corporate Secretary | ||
| STERIGENICS HOLDINGS L.L.C. | ||
| By: | /s/ Corey H. Grauer | |
| Name: Corey H. Grauer | ||
| Title: Vice President, General Counsel, & Corporate Secretary | ||
| STHI HOLDING CORP. | ||
| By: | /s/ Corey H. Grauer | |
| Name: Corey H. Grauer | ||
| Title: Vice President, General Counsel, & Corporate Secretary | ||
| STHI INTERMEDIATE HOLDING CORP | ||
| By: | /s/ Corey H. Grauer | |
| Name: Corey H. Grauer | ||
| Title: Vice President, General Counsel, & Corporate Secretary | ||
| STHI HOLDINGS, INC. | ||
| By: | /s/ Corey H. Grauer | |
| Name: Corey H. Grauer | ||
| Title: Vice President, General Counsel, & Corporate Secretary | ||
| STHI PARENT COMPANY, L.L.C. | ||
| By: | /s/ Corey H. Grauer | |
| Name: Corey H. Grauer | ||
| Title: Vice President, General Counsel, & Corporate Secretary | ||
| GTCR FUND IX/A, L.P. | ||
| By: | GTCR Partners IX, L.P. | |
| Its: | General Partner | |
| By: | GTCR Golder Rauner II, L.L.C. | |
| Its: | General Partner | |
| By: | /s/ Christian B. McGrath | |
| Name: Christian B. McGrath | ||
| Title: General Counsel | ||
| GTCR FUND IX/B, L.P. | ||
| By: | GTCR Partners IX, L.P. | |
| Its: | General Partner | |
| By: | GTCR Golder Rauner II, L.L.C. | |
| Its: | General Partner | |
| By: | /s/ Christian B. McGrath | |
| Name: Christian B. McGrath | ||
| Title: General Counsel | ||
| GTCR CO-INVEST III, L.P. | ||
| By: | GTCR Golder Rauner II, L.L.C. | |
| Its: | General Partner | |
| By: | /s/ Christian B. McGrath | |
| Name: Christian B. McGrath | ||
| Title: General Counsel | ||
| GTCR PARTNERS IX, L.P. | ||
| By: | GTCR Golder Rauner II, L.L.C. | |
| Its: | General Partner | |
| By: | /s/ Christian B. McGrath | |
| Name: Christian B. McGrath | ||
| Title: General Counsel | ||
| GTCR GOLDER RAUNER II, L.L.C. | ||
| By: | /s/ Christian B. McGrath | |
| Name: Christian B. McGrath | ||
| Title: General Counsel | ||
