EXHIBIT A JOINT FILING AGREEMENT
EXHIBIT A
This will confirm the agreement by and among the undersigned that the Schedule 13G filed with the Securities and Exchange Commission on or about the date hereof with respect to the beneficial ownership by the undersigned of the Series A Common Stock, $0.001 par value per share, of Klaviyo, Inc. (this “Agreement”), is being filed, and all amendments thereto will be filed, on behalf of each of the persons and entities named below that is named as a reporting person in such filing in accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.
Dated: January 31, 2024
| SUMMIT PARTNERS GROWTH EQUITY FUND IX-A, L.P. |
| By: Summit Partners GE IX, L.P. |
| Its: General Partner |
| By: Summit Partners GE IX, LLC |
| Its: General Partner |
| * |
| Authorized Signatory |
| SUMMIT PARTNERS GROWTH EQUITY FUND IX-B, L.P. |
| By: Summit Partners GE IX, L.P. |
| Its: General Partner |
| By: Summit Partners GE IX, LLC |
| Its: General Partner |
| * |
| Authorized Signatory |
| SUMMIT PARTNERS CO-INVEST (KIWI), L.P. |
| By: Summit Partners Co-invest Kiwi GP, LLC |
| Its: General Partner |
| * |
| Authorized Signatory |
| SUMMIT INVESTORS GE IX/XX XX, LLC |
| By: Summit Investors Management, LLC |
| Its: Manager |
| By: Summit Master Company, LLC |
| Its: Managing Member |
| * |
| Authorized Signatory |
| SUMMIT INVESTORS GE IX/XX XX (UK), L.P. |
| By: Summit Investors Management, LLC |
| Its: General Partner |
| By: Summit Master Company, LLC |
| Its: Managing Member |
| * |
| Authorized Signatory |
| SUMMIT PARTNERS, L.P. |
| By: Summit Master Company, LLC |
| Its: General Partner |
| * |
| Authorized Signatory |
| * By: | /s/ Xxxx X. Xxxxxxxxx | |
| Xxxx X. Xxxxxxxxx | ||
| Power of Attorney** |
** Pursuant to Powers of Attorney attached hereto as Exhibit B.
