| CUSIP No. 450056106 | 13G | Page 1 5 of 19 Pages |
EXHIBIT 1
AGREEMENT
Pursuant to Rule13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required by Schedule 13G need be filed with respect to the ownership by each of the undersigned of shares of Common Stock of iRhythm Technologies, Inc.
Date: February 10, 2017
| NEW LEAF VENTURES II, L.P. | ||||||
| By: | NEW LEAF VENTURE ASSOCIATES II, L.P. | |||||
| General Partner | ||||||
| By: | NEW LEAF VENTURE MANAGEMENT II, L.L.C. | |||||
| General Partner | ||||||
| By: | * | |||||
| Craig L. Slutzkin | ||||||
| Chief Financial Officer | ||||||
| NEW LEAF VENTURE ASSOCIATES II, L.P. | ||||||
| By: | NEW LEAF VENTURE MANAGEMENT II, L.L.C. | |||||
| General Partner | ||||||
| By: | * | |||||
| Craig L. Slutzkin | ||||||
| Chief Financial Officer | ||||||
| NEW LEAF VENTURE MANAGEMENT II, L.L.C. | ||||||
| By: | * | |||||
| Craig L. Slutzkin | ||||||
| Chief Financial Officer | ||||||
* | ||||||
| Philippe O. Chambon | ||||||
* | ||||||
| Vijay Lathi | ||||||
* | ||||||
| Ronald Hunt | ||||||
| CUSIP No. 450056106 | 13G | Page 16 of 19 Pages |
* |
| Jeani Delagardelle |
* |
| Liam Ratcliffe |
/s/ Craig L. Slutzkin |
| Craig L. Slutzkin |
| Asattorney-in-fact |
| * | This Schedule 13G was executed by Craig L. Slutzkin on behalf of the individuals listed above pursuant to Powers of Attorney, copies of which are attached as Exhibit 2. |
