STOCK TITAN

SI-BONE (SIBN) director gets RSUs, sells shares to cover taxes

Filing Impact
(Neutral)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

SI-BONE, Inc. director Jeffrey W. Dunn reported routine equity compensation and related tax sales. He received a grant of 10,957 shares of common stock as restricted stock units, which each represent a contingent right to one share and will vest in full at the earlier of the next annual stockholder meeting or one year from the vesting commencement date, subject to continued board service.

To cover tax withholding from RSU vesting, 3,575 shares of common stock were sold in open-market transactions at a weighted average price of $15.2462 per share in a non-discretionary “sell to cover” transaction. After these transactions, Dunn holds 16,057 shares directly and 81,073 shares indirectly through The Jeffrey W. Dunn Living Trust.

Positive

  • None.

Negative

  • None.
Insider DUNN JEFFREY W
Role null
Sold 3,575 shs ($55K)
Type Security Shares Price Value
Sale Common Stock 3,575 $15.2462 $55K
Grant/Award Common Stock 10,957 $0.00 --
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 16,057 shares (Direct, null); Common Stock — 81,073 shares (Indirect, by Trust)
Footnotes (1)
  1. Reflects 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. The shares subject to the restricted stock unit will vest 100% upon the earlier of (i) the next annual general meeting of the stockholders of the Company or (ii) the date one year from the Vesting Commencement Date, subject to the Reporting Person's continuous service as a member of the Company's Board of Directors until such date. 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. This transaction was executed in multiple trades at prices ranging from $15.085 USD to $15.42 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. Includes 10,957 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. Reflects the transfer of shares from the Reporting Person to The Jeffrey W. Dunn Living Trust dated May 17, 2012. Shares held by The Jeffrey W. Dunn Living Trust Dated May 17, 2012.
Shares sold 3,575 shares Open-market sale to cover tax withholding
Average sale price $15.2462 per share Weighted average price for 3,575-share tax sale
RSU grant size 10,957 shares Restricted stock units granted to director
Direct holdings after transactions 16,057 shares Common stock held directly post-transaction
Indirect trust holdings 81,073 shares Common stock held via The Jeffrey W. Dunn Living Trust
Sale price range $15.085–$15.42 per share Price range for multiple trades in tax sale
restricted stock units financial
"Reflects shares issuable on the settlement of restricted stock units granted to the Reporting Person."
Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.
sell to cover financial
"The sale satisfies the tax withholding obligations to be funded by a "sell to cover" transaction"
Sell to cover is when a person who receives company stock through options or awards sells just enough shares immediately to pay required taxes, exercise costs, or fees, keeping the rest. Think of it like cashing part of a bonus to cover the tax bill so you can keep the remainder. For investors, it can create predictable small selling pressure and slightly change the number of shares actually held by insiders without increasing long‑term dilution.
weighted average sale price financial
"the price reported above reflects the weighted average sale price"
Living Trust financial
"Shares held by The Jeffrey W. Dunn Living Trust Dated May 17, 2012."
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SEC Form 4
FORM 4UNITED 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 CALIFORNIA 95050

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
SI-BONE, Inc. [ SIBN ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/04/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock06/04/2026A10,957(1)A$0.0020,114D
Common Stock06/05/2026S(2)3,575D$15.2462(3)16,057(4)D
Common Stock81,073(5)Iby Trust(6)
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Reflects 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. The shares subject to the restricted stock unit will vest 100% upon the earlier of (i) the next annual general meeting of the stockholders of the Company or (ii) the date one year from the Vesting Commencement Date, subject to the Reporting Person's continuous service as a member of the Company's Board of Directors until such date.
2. 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.
3. This transaction was executed in multiple trades at prices ranging from $15.085 USD to $15.42 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.
4. Includes 10,957 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.
5. Reflects the transfer of shares from the Reporting Person to The Jeffrey W. Dunn Living Trust dated May 17, 2012.
6. Shares held by The Jeffrey W. Dunn Living Trust Dated May 17, 2012.
Remarks:
/s/ Michael A. Pisetsky, Attorney-in-Fact for Jeffrey W. Dunn06/08/2026
** Signature of Reporting PersonDate
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)

FAQ

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

Jeffrey Dunn reported a grant of 10,957 restricted stock units and a sale of 3,575 shares of SI-BONE common stock to cover tax withholding obligations related to RSU vesting.

How many SI-BONE (SIBN) shares did Jeffrey Dunn sell in this Form 4?

He sold 3,575 shares of SI-BONE common stock. The filing states this was a sell-to-cover tax transaction tied to restricted stock unit vesting, rather than a discretionary open-market sale.

What equity award did Jeffrey Dunn receive from SI-BONE (SIBN)?

He received 10,957 restricted stock units. Each unit represents a contingent right to one SI-BONE common share, vesting fully at the earlier of the next annual stockholder meeting or one year from the vesting commencement date.

At what price were Jeffrey Dunn’s SI-BONE (SIBN) shares sold?

The reported weighted average sale price was $15.2462 per share. Footnotes note multiple trades executed in a price range from $15.085 to $15.42 per share for this tax-related sale.

How many SI-BONE (SIBN) shares does Jeffrey Dunn hold after these transactions?

Following the reported transactions, he holds 16,057 shares directly and 81,073 shares indirectly through The Jeffrey W. Dunn Living Trust, according to the Form 4 and its footnotes.