STOCK TITAN

SI-BONE (SIBN) director granted 10,957 restricted stock units and reports holdings

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

Rhea-AI Filing Summary

SI-BONE, Inc. director John Gordon Freund reported a compensation-related equity grant rather than an open-market trade. He received 10,957 shares of Common Stock in the form of restricted stock units at $0.00 per share, classified as a grant or award acquisition. These restricted stock units will vest 100% on the earlier of the next annual general meeting of stockholders or one year from the vesting commencement date, subject to his continued board service. Following this award, he directly holds 54,258 shares, which include 10,957 shares issuable upon settlement of restricted stock units, and is also associated with 91,767 shares held indirectly through John Freund Family Partnership IV, L.P., for which he may be deemed to have voting and investment power but disclaims beneficial ownership except to the extent of his pecuniary interest.

Positive

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Negative

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Insider Freund John Gordon
Role null
Type Security Shares Price Value
Grant/Award Common Stock 10,957 $0.00 --
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 54,258 shares (Direct, null); Common Stock — 91,767 shares (Indirect, By John Freund Family Partnership IV, L.P)
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. 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. Shares held by John Freund Family Partnership IV, L.P. ("Family LP"). Reporting Person, a member of Issuer's board of directors, is a general partner of Family LP and may be deemed to have voting and investment power with respect to the securities held by Family LP. Reporting Person disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein.
RSU grant size 10,957 shares Restricted stock units granted to director at $0.00 per share
Direct holdings after grant 54,258 shares Common stock directly held following the RSU award
Indirect partnership holdings 91,767 shares Shares held by John Freund Family Partnership IV, L.P.
Grant price $0.00 per share Restricted stock units issued at no cash cost to director
Vesting trigger Next annual meeting or 1 year RSUs vest 100% at earlier of next AGM or one year from vesting start
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.
contingent right financial
"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock."
continuous service financial
"subject to the Reporting Person's continuous service as a member of the Company's Board of Directors until such date."
beneficial ownership financial
"Reporting Person disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein."
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
pecuniary interest financial
"except to the extent of his pecuniary interest therein."
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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*
Freund John Gordon

(Last)(First)(Middle)
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$0.0054,258(2)D
Common Stock91,767IBy John Freund Family Partnership IV, L.P(3)
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. 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.
3. Shares held by John Freund Family Partnership IV, L.P. ("Family LP"). Reporting Person, a member of Issuer's board of directors, is a general partner of Family LP and may be deemed to have voting and investment power with respect to the securities held by Family LP. Reporting Person disclaims beneficial ownership of such securities, except to the extent of his pecuniary interest therein.
Remarks:
/s/ Michael A. Pisetsky, Attorney-in-Fact for John G. Freund06/08/2026
** 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 did SI-BONE (SIBN) director John Gordon Freund report in this Form 4?

He reported an equity compensation grant, not an open-market trade. The filing shows he received 10,957 restricted stock units of SI-BONE common stock, reflecting a grant or award acquisition under the company’s director compensation program.

How many SI-BONE (SIBN) shares did John Gordon Freund receive in this grant?

He received 10,957 shares in the form of restricted stock units at $0.00 per share. Each restricted stock unit represents a contingent right to receive one share of SI-BONE common stock upon vesting and settlement, subject to the award’s terms.

When do John Gordon Freund’s new SI-BONE (SIBN) restricted stock units vest?

They vest 100% on the earlier of the next annual general meeting of SI-BONE stockholders or one year from the vesting commencement date. Vesting requires his continuous service as a member of the company’s Board of Directors through that date.

What is John Gordon Freund’s direct SI-BONE (SIBN) shareholding after this Form 4?

After the award, he directly holds 54,258 shares of SI-BONE common stock. This figure includes 10,957 shares issuable upon settlement of the newly granted restricted stock units, according to the filing’s ownership table and footnotes.

What indirect SI-BONE (SIBN) holdings are reported for John Gordon Freund?

The filing reports 91,767 SI-BONE shares held by John Freund Family Partnership IV, L.P. He may be deemed to share voting and investment power over these securities but disclaims beneficial ownership except to the extent of his pecuniary interest in the partnership.

Did John Gordon Freund buy or sell SI-BONE (SIBN) shares on the open market?

No open-market purchases or sales are reported. The Form 4 shows a grant of 10,957 restricted stock units as compensation and an indirect holding entry, but no transactions coded as open-market buys or sells.