Company: CWAN
Filing Date: 2025-04-29
Form Type: DEFA14A
Source: 0001628280-25-020662
Chunk: 0

Company: Clearwater Analytics Holdings, Inc.
Filing Date: 2025-04-29
Form: DEFA14A
Chunk 0
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### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549
<div align='center'>______________</div>

#### SCHEDULE 14A

#### Proxy Statement Pursuant to Section 14(a) of the

#### Securities Exchange Act of 1934
<div align='center'>_______________</div>

| Filed by the Registrantx |     | Filed by a Party other than the Registranto |

| Check the appropriate box: |     |                                                                                 |
| o                          |     | Preliminary Proxy Statement                                                     |
| o                          |     | Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| o                          |     | Definitive Proxy Statement                                                      |
| x                          |     | Definitive Additional Materials                                                 |
| o                          |     | Soliciting Material under §240.14a-12                                           |

#### Clearwater Analytics Holdings, Inc.
<div align='center'>(Name of Registrant as Specified in its Charter)

(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)</div>

| Payment of Filing Fee (Check all boxes that apply): |     |                                                                                                     |
| x                                                   |     | No fee required                                                                                     |
| o                                                   |     | Fee paid previously with preliminary materials                                                      |
| o                                                   |     | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11 |