Profusa, Inc. (PFSA) sees 10% owner HRT Financial purchase 15,924 shares

Rhea-AI Filing Summary

HRT Financial LP, listed as a ten percent owner of Profusa, Inc., reported open-market purchases of a total of 15,924 shares of common stock on August 3 and 4, 2026, at per-share prices of $0.958 and $0.954. The filing does not mark the Rule 10b5-1 trading plan checkbox.

Insider Trade Summary

Net Buyer: 15,924 shares

Net Buy 2 txns

Insider HRT FINANCIAL LP

Role 10% Owner

Bought 15,924 shs ($15K)

Type	Security	Shares	Price	Value
Purchase	Common Stock	1,368	$0.954	$1K
Purchase	Common Stock	14,556	$0.958	$14K

Holdings After Transaction: Common Stock — 109,669 shares (Direct)

Key Figures

Total shares purchased: 15,924 shares Shares purchased on August 3, 2026: 14,556 shares Shares purchased on August 4, 2026: 1,368 shares

3 metrics

Total shares purchased 15,924 shares Aggregate Profusa common stock bought by HRT Financial LP on August 3–4, 2026

Shares purchased on August 3, 2026 14,556 shares Profusa common stock bought at $0.958 per share in an open-market purchase

Shares purchased on August 4, 2026 1,368 shares Profusa common stock bought at $0.954 per share in an open-market purchase

Key Terms

ten percent owner, Rule 10b5-1, open market or private transaction, acquired_disposed_code

4 terms

ten percent owner regulatory

"HRT FINANCIAL LP is identified as a ten percent owner of Profusa, Inc."

Rule 10b5-1 regulatory

"The aff_10b5_one field is false, so the Rule 10b5-1 checkbox is not marked."

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

open market or private transaction financial

"transaction_code_description is Purchase in open market or private transaction."

acquired_disposed_code regulatory

"The acquired_disposed_code A indicates an acquisition of securities."

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/05/2026 - 01:53 PM Accepted by SEC EDGAR 08/05/2026 - 01:53 PM Learn about SEC filing dates

FAQ

What insider activity did HRT Financial report for Profusa (PFSA)?

HRT Financial LP, a ten percent owner of Profusa, reported buying a total of 15,924 common shares in open-market transactions on August 3 and 4, 2026, at prices just under $1.00 per share.

How many Profusa (PFSA) shares did HRT Financial buy on each date?

HRT Financial bought 14,556 shares of Profusa common stock on August 3, 2026, and 1,368 shares on August 4, 2026, according to the Form 4 insider report filed for these transactions.

At what prices did HRT Financial purchase Profusa (PFSA) shares?

The reported purchases were made at $0.958 per share on August 3, 2026, and $0.954 per share on August 4, 2026, for Profusa common stock in open-market transactions.

Is HRT Financial’s Profusa (PFSA) purchase under a Rule 10b5-1 plan?

The Form 4’s Rule 10b5-1 checkbox is not marked, so the filing does not indicate that HRT Financial’s Profusa share purchases were made pursuant to a Rule 10b5-1 trading plan.

What type of security did HRT Financial trade in Profusa (PFSA)?

HRT Financial traded Profusa common stock. The Form 4 lists two non-derivative transactions, both coded as open-market or private purchases of common stock, with no derivative securities reported.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

HRT FINANCIAL LP

(Last) (First) (Middle)

3 WORLD TRADE CENTER, 175 GREENWICH STRE

76TH FLOOR

(Street)

NEW YORK NEW YORK 10007

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Profusa, Inc. [ PFSA ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/28/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/03/2026		P		14,556	A	$0.958	108,301	D
Common Stock	08/04/2026		P		1,368	A	$0.954	109,669	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	Adam Nunes	08/05/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)