Company: PFSA
Filing Date: 2025-05-15
Form Type: 424B3
Source: 0001213900-25-044417
Chunk: 787

Company: Profusa, Inc.
Filing Date: 2025-05-15
Form: 424B3
Chunk 787
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 under the Merger Agreement. All reference in and to the Merger Agreement (including any annexes, exhibits or schedules thereto) shall be deemed to be references to the Merger Agreement as amended by this Amendment. 3. Governing Law.This Amendment and the legal relations among the Parties with respect to this Amendment will be governed by and construed in accordance with the provisions contained in Section 9.03 of the Merger Agreement. 4. Counterparts.This Amendment may be executed by signatures exchanged via facsimile or other electronic means and in one or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument. [ Signature page follows] [Signature Page To Amendment To Merger Agreement] Annex A-5-1

IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed as of the day and year first above written.

| Parent:                     |     |                   |     |                    |
| NORTHVIEW ACQUISITION CORP. |     |                   |     |                    |
| By:                         |     | /s/ Fred Knechtel |     |                    |
|                             |     | Name:             |     | Fred Knechtel      |
|                             |     | Title:            |     | CFO and Co-Founder |

| Merger Sub:                 |     |                   |     |               |
| NV PROFUSA MERGER SUB, INC. |     |                   |     |               |
| By:                         |     | /s/ Fred Knechtel |     |               |
|                             |     | Name:             |     | Fred Knechtel |
|                             |     | Title:            |     | Officer       |

[SIGNATURE PAGE TO AMENDMENT TO MERGER AGREEMENT]

Annex A-5-2

IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed as of the day and year first above written.

| Company:      |     |               |     |           |
| PROFUSA, INC. |     |               |     |           |
| By:           |     | /s/ Ben Hwang |     |           |
|               |     | Name:         |     | Ben Hwang |
|               |     | Title:        |     | CEO       |

[SIGNATURE PAGE TO AMENDMENT TO MERGER AGREEMENT]

Annex A-5-3 ANNEX B Form