SI-BONE CEO's trust sells 38,006 common shares

The trust's reported balance after the transaction was 379,256 shares, and Francis's direct holdings included 355,697 shares issuable upon RSU settlement.

Rhea-AI Filing Summary

SI-BONE, Inc. CEO and director Laura Francis reported that The David & Laura Joint Rev Tr sold 38,006 common shares on October 12, 2026, at a weighted-average price of $20.0498 per share. The sale was made under a Rule 10b5-1 trading plan dated May 21, 2026. The trust held 379,256 shares following the transaction. Francis also reported 368,129 directly held common shares, including 355,697 shares issuable upon settlement of restricted stock units.

Insider Trade Summary 10b5-1

Net Seller: 38,006 shares

Net Sell 2 txns

Insider FRANCIS LAURA

Role Chief Executive Officer

Sold 38,006 shs ($762K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2, F3, F4	38,006	$20.0498	$762K
holding	Common Stock F5	--	--	--

Holdings After Transaction: Common Stock — 379,256 shares (Indirect, by Trust); Common Stock — 368,129 shares (Direct)

Footnotes (5)

1. F1. The sale reported on this Form 4 was effected pursuant to a 10b5-1 trading plan dated May 21, 2026.
2. F2. The price reported in column 4 is a weighted-average price. The shares were sold in multiple transactions ranging from $20.00 to $20.1050, inclusive. The Reporting Person undertakes to provide the Issuer, any securityholder 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 these footnotes.
3. F3. Reflects the transfer of shares from the Reporting Person to The David & Laura Joint Rev Tr.
4. F4. Shares held by The David & Laura Joint Rev Tr.
5. F5. Includes 355,697 shares issuable on settlement of restricted stock units granted to the Reporting Person. Each restricted stock unit represents a contingent right to receive one shares of the Issuer's common stock.

Key Figures

Shares sold: 38,006 shares Weighted-average sale price: $20.0498 per share Sale price range: $20.00-$20.1050 per share +3 more

6 metrics

Shares sold 38,006 shares The David & Laura Joint Rev Tr, October 12, 2026

Weighted-average sale price $20.0498 per share Sale on October 12, 2026

Sale price range $20.00-$20.1050 per share Multiple transactions; inclusive range

Trust shares following transaction 379,256 shares Shares held by The David & Laura Joint Rev Tr

Directly held shares following transaction 368,129 shares Includes shares issuable upon settlement of restricted stock units

Shares issuable upon RSU settlement 355,697 shares Included in Francis's directly held shares

Key Terms

Rule 10b5-1 trading plan, weighted-average price, restricted stock units

3 terms

Rule 10b5-1 trading plan regulatory

"effected pursuant to a 10b5-1 trading plan dated May 21, 2026"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted-average price financial

"The price reported in column 4 is a weighted-average price"

Weighted-average price is the average of multiple prices where each price is counted according to its size or importance—larger trades carry more weight than smaller ones, like averaging course grades by credit hours. It matters to investors because it gives a more realistic picture of the true price paid or received, helping assess trade execution, compare performance, calculate cost basis, and value positions more accurately than a simple average.

restricted stock units financial

"shares issuable on settlement 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.

FAQ

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

How many SIBN shares did Laura Francis sell, and at what price?

The David & Laura Joint Rev Tr sold 38,006 SI-BONE common shares on October 12, 2026, at a weighted-average price of $20.0498 per share. The shares were sold in multiple transactions ranging from $20.00 to $20.1050, inclusive, under a Rule 10b5-1 trading plan dated May 21, 2026.

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

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Available on EDGAR 10/14/2026 - 05:11 PM EDT Accepted by SEC EDGAR 10/14/2026 - 05:10 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
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).

X

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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/12/2026

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
Common Stock	10/12/2026		S(1)		38,006	D	$20.0498(2)	379,256(3)	I	by Trust(4)
Common Stock								368,129(5)	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 sale reported on this Form 4 was effected pursuant to a 10b5-1 trading plan dated May 21, 2026.

2. The price reported in column 4 is a weighted-average price. The shares were sold in multiple transactions ranging from $20.00 to $20.1050, inclusive. The Reporting Person undertakes to provide the Issuer, any securityholder 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 these footnotes.

3. Reflects the transfer of shares from the Reporting Person to The David & Laura Joint Rev Tr.

4. Shares held by The David & Laura Joint Rev Tr.

5. Includes 355,697 shares issuable on settlement of restricted stock units granted to the Reporting Person. Each restricted stock unit represents a contingent right to receive one shares of the Issuer's common stock.

Remarks:

	/s/ Michael A. Pisetsky, Attorney-in-Fact for Laura A. Francis	10/14/2026
	** 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)