Company: PFSA
Filing Date: 2025-10-07
Form Type: DEFA14A
Source: 0001213900-25-097058
Chunk: 2

Company: Profusa, Inc.
Filing Date: 2025-10-07
Form: DEFA14A
Chunk 2
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 Special Meeting until a quorum is present. If an adjournment is for more
than 30 days or a new record date is fixed for the adjourned meeting, we will provide notice of the adjourned meeting to each stockholder
of record entitled to vote at the meeting.

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Impact of the Quorum Change on Voting at the Special Meeting

The approval of each of the Proposals requires
the affirmative vote of a majority of the votes cast on the matter. As a result of the Bylaw Amendment, fewer outstanding shares of stock
will be required to constitute a quorum at the Special Meeting. This means that if the number of shares represented at the Special Meeting
satisfies the new quorum requirement but is less than a majority of our outstanding shares of stock, the affirmative vote of fewer shares
will be required to approve each of the Proposals than if the Bylaw Amendment had not been approved.

Impact on Proxies Previously Submitted

Unless stockholders want to change their vote
on any or all of the Proposals, this Bylaw Amendment will not impact any proxies previously submitted in connection with the Special Meeting
and such proxies will continue to be counted as disclosed in the Proxy Statement. If you wish to change your vote, we refer you to the
procedures set forth in the Proxy Statement, in particular, under the Special Meeting entitled “Proxies; Board Solicitation.”

Additional Information

This letter should be read in conjunction with
the Proxy Statement, which we encourage you to read carefully and in its entirety before making a voting decision. To the extent that
information in this letter differs from or updates information contained in the Proxy Statement, the information contained herein supersedes
the information contained in the Proxy Statement.

YOUR VOTE IS VERY IMPORTANT. Regardless
of whether you plan to participate in the Special Meeting, we ask that you promptly cast your vote following the instructions provided
on the proxy card or on the materials provided by your broker if you own your shares in “street name.”

|                 | By order of the Board of Directors: |
|                 | /s/ Ben Hwang                       |
|                 | Ben Hwang                           |
|                 | Chief Executive Officer             |
| October 7, 2025 |                                     |

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