SI-BONE director sells 337 shares in tax sale

SI-BONE, Inc. director Jeffrey W. Dunn reported a small sale of company stock tied to tax obligations.

Rhea-AI Filing Summary

SI-BONE, Inc. director Jeffrey W. Dunn reported a small sale of company stock tied to tax obligations. On February 2, 2026, he sold 337 shares of common stock at a weighted average price of $16.4157 per share.

The footnotes explain this was a mandatory "sell to cover" transaction to satisfy tax withholding from vesting restricted stock units, and not a discretionary trade. After the sale, Dunn beneficially owned 9,970 shares directly, including 9,491 shares issuable upon settlement of restricted stock units, and 80,115 shares indirectly held by The Jeffrey W. Dunn Living Trust Dated May 17, 2012.

Insider Trade Summary

Net Seller: 337 shares

Net Sell 2 txns

Insider DUNN JEFFREY W

Role Director

Sold 337 shs ($6K)

Type	Security	Shares	Price	Value
Sale	Common Stock	337	$16.4157	$6K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 9,970 shares (Direct); Common Stock — 80,115 shares (Indirect, by Trust)

Footnotes (4)

1. F1. The sale reported on this Form 4 represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. The sale satisfies the tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person.
2. F2. This transaction was executed in multiple trades at prices ranging from $16.35 USD to $16.56 USD; the price reported above reflects the weighted average sale price. The Reporting Person undertakes to provide Issuer, any security holder of the Issuer, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
3. F3. Includes 9,491 shares issuable on the settlement of restricted stock units granted to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.
4. F4. Shares held by The Jeffrey W. Dunn Living Trust Dated May 17, 2012.

FAQ

What insider transaction did SI-BONE (SIBN) director Jeffrey Dunn report?

Jeffrey W. Dunn reported selling 337 SI-BONE shares on February 2, 2026, at a weighted average price of $16.4157. The filing describes this as a mandatory sale to cover tax withholding from vesting restricted stock units, not a discretionary open-market trade.

Why did SI-BONE (SIBN) director Jeffrey Dunn sell 337 shares?

The 337-share sale was to cover tax withholding obligations tied to the vesting of restricted stock units. According to the filing, the sale was executed as a "sell to cover" transaction and does not represent a discretionary trade by Dunn.

What price did Jeffrey Dunn receive for his SI-BONE (SIBN) share sale?

Dunn’s reported sale used a weighted average price of $16.4157 per share. The transaction occurred in multiple trades between $16.35 and $16.56, and he has undertaken to provide full trade-by-trade details to the company, shareholders, or regulators upon request.

How many SI-BONE (SIBN) shares does Jeffrey Dunn own after this Form 4?

After the reported transaction, Dunn beneficially owns 9,970 shares directly, including 9,491 issuable upon settlement of restricted stock units, and 80,115 shares indirectly held by The Jeffrey W. Dunn Living Trust Dated May 17, 2012.

What role do restricted stock units play in this SI-BONE (SIBN) Form 4?

The sale stems from restricted stock units (RSUs) vesting, triggering tax withholding obligations. The filing states Dunn’s direct holdings include 9,491 shares issuable upon RSU settlement, with each RSU representing a contingent right to receive one share of SI-BONE common stock.

How are trust-held SI-BONE (SIBN) shares reported for Jeffrey Dunn?

The Form 4 reports 80,115 SI-BONE shares indirectly owned and notes they are held by The Jeffrey W. Dunn Living Trust Dated May 17, 2012. These are classified as indirect beneficial ownership, separate from Dunn’s directly held and RSU-related shares.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 02/04/2026 - 06:11 PM 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
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^*

DUNN JEFFREY W

(Last) (First) (Middle)

C/O SI-BONE, INC.

471 EL CAMINO REAL, SUITE 101

(Street)

SANTA CLARA CA 95050

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
SI-BONE, Inc. [ SIBN ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
02/02/2026

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

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

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

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	02/02/2026		S(1)		337	D	$16.4157(2)	9,970(3)	D
Common Stock								80,115	I	by Trust(4)

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 sale reported on this Form 4 represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. The sale satisfies the tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person.

2. This transaction was executed in multiple trades at prices ranging from $16.35 USD to $16.56 USD; the price reported above reflects the weighted average sale price. The Reporting Person undertakes to provide Issuer, any security holder of the Issuer, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

3. Includes 9,491 shares issuable on the settlement of restricted stock units granted to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

4. Shares held by The Jeffrey W. Dunn Living Trust Dated May 17, 2012.

Remarks:

	/s/ Michael A. Pisetsky, Attorney-in-Fact for Jeffrey W. Dunn	02/04/2026
	** 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.