Hyperfine COO sells shares to cover RSU taxes

Hyperfine, Inc. Chief Operating Officer Thomas Teisseyre reported an open-market sale of 24,188 shares of Class A common stock at $1.21 per share.

Rhea-AI Filing Summary

Hyperfine, Inc. Chief Operating Officer Thomas Teisseyre reported an open-market sale of 24,188 shares of Class A common stock at $1.21 per share. According to the footnote, the sale was made solely to cover tax withholding obligations tied to the vesting of restricted stock units under a “sell to cover” provision. After this transaction, he directly holds 354,648 shares, indicating it is a routine tax-related disposition rather than a discretionary change in his overall ownership stake.

Insider Trade Summary

Net Seller: 24,188 shares

Net Sell 1 txn

Insider TEISSEYRE THOMAS

Role Chief Operating Officer

Sold 24,188 shs ($29K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	24,188	$1.21	$29K

Holdings After Transaction: Class A Common Stock — 354,648 shares (Direct)

Footnotes (1)

1. F1. The sales reported in this Form 4 were effected to cover tax withholding obligations in connection with the vesting of restricted stock units ("RSUs") that were granted on March 31, 2025 pursuant to a "sell to cover" provision included in the RSU Agreement.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Hyperfine (HYPR) COO Thomas Teisseyre report in this Form 4 filing?

Hyperfine COO Thomas Teisseyre reported selling 24,188 shares of Class A common stock at $1.21 per share. The transaction was executed under a “sell to cover” provision to satisfy tax withholding obligations from vesting restricted stock units, not as a discretionary portfolio change.

Why did Hyperfine (HYPR) COO sell 24,188 shares in this transaction?

The 24,188-share sale was made to cover tax withholding obligations triggered by the vesting of restricted stock units. The footnote clarifies it was a “sell to cover” transaction under the RSU agreement, indicating a tax-related, mechanical sale rather than a typical open-market liquidation.

At what price did the Hyperfine (HYPR) COO shares sell, and what type of stock was involved?

The Hyperfine COO’s transaction involved Class A common stock sold at $1.21 per share. The filing labels the move as an open-market sale, but the accompanying footnote specifies it occurred to satisfy tax withholding requirements associated with RSU vesting under a sell-to-cover arrangement.

How many Hyperfine (HYPR) shares does the COO hold after this Form 4 transaction?

Following the sale, the COO directly holds 354,648 shares of Hyperfine Class A common stock. This remaining stake shown in the filing suggests the transaction represents a small, tax-driven adjustment to his position rather than a major reduction in his overall ownership interest.

Does this Hyperfine (HYPR) Form 4 indicate routine tax withholding or a discretionary sale?

The Form 4 indicates a routine tax-withholding event. The footnote explicitly states the sales were made to cover tax withholding obligations related to RSU vesting under a “sell to cover” provision, distinguishing it from a discretionary decision to reduce the COO’s equity exposure.

What type of transaction code is used in the Hyperfine (HYPR) COO Form 4 filing?

The transaction is coded as “S,” which generally denotes an open-market or private sale. However, the footnote clarifies the purpose was to cover tax withholding on vesting restricted stock units, framing the sale as a mechanical tax event rather than a typical market-driven share disposal.

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

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Accepted by SEC EDGAR 03/25/2026 - 05:15 PM EDT Learn about SEC filing dates

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
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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^*

TEISSEYRE THOMAS

(Last) (First) (Middle)

C/O HYPERFINE, INC.

351 NEW WHITFIELD STREET

(Street)

GUILFORD CONNECTICUT 06437

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Hyperfine, Inc. [ HYPR ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/23/2026

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
Class A Common Stock	03/23/2026		S		24,188	D	$1.21(1)	354,648	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:

1. The sales reported in this Form 4 were effected to cover tax withholding obligations in connection with the vesting of restricted stock units ("RSUs") that were granted on March 31, 2025 pursuant to a "sell to cover" provision included in the RSU Agreement.

	/s/ Brett Hale, Attorney-in-Fact	03/25/2026
	** 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)