Company: WHWK
Filing Date: 2025-03-31
Form Type: S-3
Source: 0001193125-25-068942
Chunk: 16

Company: Whitehawk Therapeutics, Inc.
Filing Date: 2025-03-31
Form: S-3
Chunk 16
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. However, because the selling stockholders may sell all or some of their shares under this prospectus from time to time, or in another permitted manner, we cannot assure you as to the actual
number of shares that will be sold by the selling stockholders or that will be held by the selling stockholders after completion of any sales. We do not know how long the selling stockholders will hold the shares before selling them. The percentages
of shares owned after the offering are based on 46,294,912 shares of common stock outstanding as of March 4, 2025, which includes the outstanding shares of common stock offered by this prospectus.

Beneficial ownership is determined in accordance with the rules of the SEC and includes voting or investment power with respect to our common stock.
Generally, a person “beneficially owns” shares of our common stock if the person has or shares with others the right to vote those shares or to dispose of them, or if the person has the right to acquire voting or disposition rights within
60 days. The inclusion of any shares in this table does not constitute an admission of beneficial ownership for any selling stockholder named below.

9

Information about the selling stockholders may change over time. Any changed information will be set forth in an amendment to the registration statement or supplement to this prospectus, to the extent required by law.

| Name of Selling Stockholder                               |     | Shares of      
 Common Stock   
 Beneficially   
 Owned Prior to 
 Offering       |            |     | Number of         
 Shares of         
 Common Stock      
 Being Offered (1) |           |     | Shares of Common         
 Stock to be Beneficially 
 Owned After Offering (2) |           |     |            |      |   |
|                                                           |     | Number         |            |     | Offered           |           |     | Number                   |           |     | Percentage |      |   |
| Entities Affiliated with Ally Bridge (3)                  |     |                |  9,206,666 |     |                   | 9,180,000 |     |                          |    26,666 |     |            |      | * |
| Entities Affiliated with Avoro (4)                        |     |                | 11,804,752 |     |                   | 8,333,000 |     |                          | 3,471,752 |     |            | 7.50 | % |
| Entities Affiliated with Suvretta (5)                     |