STOCK TITAN

SI-BONE (SIBN) CEO Laura Francis sells 14,957 shares to cover RSU tax bill

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

Rhea-AI Filing Summary

SI-BONE, Inc.’s Chief Executive Officer Laura Francis reported open-market sales of 14,957 shares of common stock on May 18, 2026, at weighted average prices around the mid-$14 range. According to the disclosure, these shares were sold solely to cover tax withholding obligations tied to vesting restricted stock units and were not discretionary trades.

Following the sales, Francis directly holds 540,476 shares of SI-BONE common stock. She also has indirect ownership of additional shares held by a family trust, providing substantial ongoing equity exposure despite the tax-related share sales.

Positive

  • None.

Negative

  • None.
Insider FRANCIS LAURA
Role Chief Executive Officer
Sold 14,957 shs ($220K)
Type Security Shares Price Value
Sale Common Stock 3,893 $14.7453 $57K
Sale Common Stock 2,236 $14.6749 $33K
Sale Common Stock 1,973 $14.5694 $29K
Sale Common Stock 3,652 $14.7499 $54K
Sale Common Stock 3,203 $14.7273 $47K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 540,476 shares (Direct, null); Common Stock — 378,682 shares (Indirect, by Trust)
Footnotes (1)
  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. This transaction was executed in multiple trades at prices ranging from $14.34 USD to $14.84 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. This transaction was executed in multiple trades at prices ranging from $14.35 USD to $14.85 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. This transaction was executed in multiple trades at prices ranging from $14.34 USD to $14.87 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. This transaction was executed in multiple trades at prices ranging from $14.33 USD to $14.85 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 1,395 shares acquired under the SI-BONE, Inc 2018 Employee Stock Purchase Plan on May 15, 2026. Reflects the transfer of shares from the Reporting Person to The David & Laura Joint Rev Tr. Includes 385,070 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 The David & Laura Joint Rev Tr.
Shares sold 14,957 shares Open-market sales on May 18, 2026 to cover RSU tax
Direct holdings after sale 540,476 shares Common stock directly owned by Laura Francis after transactions
Indirect trust holdings 378,682 shares Common stock held indirectly by trust associated with Laura Francis
Sample sale price $14.7273 per share One weighted average price reported for May 18, 2026 sale
Sale price ranges $14.33–$14.87 Execution price bands across multiple trades noted in footnotes
restricted stock units financial
"tax withholding obligations in connection with the vesting of restricted stock units"
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
"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"
Employee Stock Purchase Plan financial
"Includes 1,395 shares acquired under the SI-BONE, Inc 2018 Employee Stock Purchase Plan"
An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.
trust financial
"Shares held by The David & Laura Joint Rev Tr."
A trust is a legal setup in which one party (the trustee) holds and manages assets—like cash, stocks or property—on behalf of other people (beneficiaries) according to instructions from the person who created it (the grantor). Think of it as a locked box with a keyholder who must follow written rules; for investors it matters because trusts influence who controls and benefits from assets, affect taxes and succession, and can change how quickly or transparently shares are bought, sold or voted.
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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*
FRANCIS LAURA

(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
XOfficer (give title below)Other (specify below)
Chief Executive Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/18/2026
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 Stock05/18/2026S(1)3,893D$14.7453(2)540,476D
Common Stock05/18/2026S(1)2,236D$14.6749(3)538,240D
Common Stock05/18/2026S(1)1,973D$14.5694(3)536,267D
Common Stock05/18/2026S(1)3,652D$14.7499(4)532,615D
Common Stock05/18/2026S(1)3,203D$14.7273(5)503,444(6)(7)(8)D
Common Stock378,682Iby Trust(9)
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. 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 $14.34 USD to $14.84 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. This transaction was executed in multiple trades at prices ranging from $14.35 USD to $14.85 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. This transaction was executed in multiple trades at prices ranging from $14.34 USD to $14.87 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.
5. This transaction was executed in multiple trades at prices ranging from $14.33 USD to $14.85 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.
6. Includes 1,395 shares acquired under the SI-BONE, Inc 2018 Employee Stock Purchase Plan on May 15, 2026.
7. Reflects the transfer of shares from the Reporting Person to The David & Laura Joint Rev Tr.
8. Includes 385,070 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.
9. Shares held by The David & Laura Joint Rev Tr.
Remarks:
/s/ Michael A. Pisetsky, Attorney-in-Fact for Laura A. Francis05/20/2026
** 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 transaction did SI-BONE (SIBN) CEO Laura Francis report?

Laura Francis reported selling 14,957 shares of SI-BONE common stock on May 18, 2026. The company states these shares were sold to cover tax withholding from vesting restricted stock units, making the activity a tax-driven event rather than a discretionary portfolio trade.

Were Laura Francis’s SI-BONE (SIBN) share sales discretionary?

The filing explains the sales were required to cover tax withholding from restricted stock unit vesting. It describes them as a "sell to cover" transaction, specifically noting they do not represent a discretionary trade by Laura Francis in SI-BONE common stock.

How many SI-BONE (SIBN) shares did Laura Francis sell and at what prices?

Laura Francis sold a total of 14,957 SI-BONE common shares across several trades. Reported weighted average sale prices for the transactions were around the mid-$14 range, with detailed footnotes citing execution price bands between about $14.33 and $14.87 per share.

How many SI-BONE (SIBN) shares does Laura Francis hold after these transactions?

After the May 18, 2026 transactions, Laura Francis directly holds 540,476 shares of SI-BONE common stock. The filing also shows additional indirect holdings through a family trust, indicating she continues to maintain a significant equity position in the company.

What does the SI-BONE (SIBN) Form 4 say about Laura Francis’s trust holdings?

The Form 4 lists an indirect position of common stock held "by Trust" associated with Laura Francis. A footnote explains the shares are held by The David & Laura Joint Revocable Trust, reflecting additional indirect ownership separate from her directly held SI-BONE shares.

Does the SI-BONE (SIBN) Form 4 mention restricted stock units for Laura Francis?

Yes. One footnote states that certain reported holdings include shares issuable upon settlement of restricted stock units granted to Laura Francis. Each restricted stock unit represents a contingent right to receive one share of SI-BONE common stock in the future, subject to vesting.