SI-BONE CEO trust sells 55,807 shares in plan

SI-BONE, Inc. (SIBN) reported that a trust associated with Chief Executive Officer and director Laura Francis sold shares of Common Stock under a Rule 10b5-1 trading plan dated May 21, 2026.

Rhea-AI Filing Summary

SI-BONE, Inc. (SIBN) reported that a trust associated with Chief Executive Officer and director Laura Francis sold shares of Common Stock under a Rule 10b5-1 trading plan dated May 21, 2026. On August 20, 2026, the trust sold 51,884 shares at a weighted-average price of $19.46 per share, in multiple transactions ranging from $19.10 to $19.73. On August 21, 2026, it sold an additional 3,923 shares at a weighted-average price of $20.02, in trades ranging from $20.00 to $20.05. Following these transactions, Laura Francis directly holds 493,900 shares, including 355,697 shares issuable upon settlement of restricted stock units.

Insider Trade Summary 10b5-1

Net Seller: 55,807 shares

Net Sell 3 txns

Insider FRANCIS LAURA

Role Chief Executive Officer

Sold 55,807 shs ($1.09M)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F4, F3	3,923	$20.02	$79K
Sale	Common Stock F1, F2, F3	51,884	$19.46	$1.01M
holding	Common Stock F5	--	--	--

Holdings After Transaction: Common Stock — 317,463 shares (Indirect, by Trust); Common Stock — 493,900 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 $19.10 to $19.73, 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. Shares held by The David & Laura Joint Rev Tr.
4. F4. The price reported in column 4 is a weighted-average price. The shares were sold in multiple transactions ranging from $20.00 to $20.05, 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.
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 August 20, 2026: 51,884 shares Weighted-average price August 20, 2026: $19.46 per share Shares sold August 21, 2026: 3,923 shares +5 more

8 metrics

Shares sold August 20, 2026 51,884 shares Indirect sale by trust associated with CEO Laura Francis

Weighted-average price August 20, 2026 $19.46 per share Sales in multiple transactions from $19.10 to $19.73

Shares sold August 21, 2026 3,923 shares Indirect sale by trust associated with CEO Laura Francis

Weighted-average price August 21, 2026 $20.02 per share Sales in multiple transactions from $20.00 to $20.05

Total shares sold in reported transactions 55,807 shares Two open-market sales on August 20-21, 2026

Shares held directly after transactions 493,900 shares Direct holdings of Laura Francis following reported sales

Restricted stock units included in holdings 355,697 shares Shares issuable on settlement of restricted stock units

Rule 10b5-1 trading plan date May 21, 2026 Plan under which the reported sales were effected

Key Terms

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

3 terms

Rule 10b5-1 trading plan regulatory

"The sale reported on this Form 4 was effected pursuant to a 10b5-1 trading plan"

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

"Includes 355,697 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.

What insider transactions did SIBN disclose for Laura Francis in this Form 4?

SIBN disclosed that a trust associated with CEO Laura Francis sold 51,884 shares of common stock on August 20, 2026 and 3,923 shares on August 21, 2026, both as open-market sales under a Rule 10b5-1 trading plan.

At what prices were the SIBN shares sold in the reported transactions?

The 51,884 shares sold on August 20, 2026 had a weighted-average price of $19.46 per share, from $19.10 to $19.73. The 3,923 shares sold on August 21, 2026 had a weighted-average price of $20.02, from $20.00 to $20.05.

Were the SIBN insider sales made under a Rule 10b5-1 trading plan?

Yes. The filing states the sales were effected pursuant to a Rule 10b5-1 trading plan dated May 21, 2026, indicating the trades were pre-arranged under that plan rather than timed at the insider’s discretion.

Who actually held the SIBN shares sold in these transactions?

The sold shares were held by The David & Laura Joint Rev Tr., described as a trust. The transactions are therefore attributed to this trust associated with CEO Laura Francis, rather than to her direct personal holdings.

How many SIBN shares does Laura Francis hold after these transactions?

After the reported sales, Laura Francis directly holds 493,900 shares of SI-BONE common stock. This figure includes 355,697 shares that are issuable upon settlement of restricted stock units granted to her.

What are the restricted stock units reported for Laura Francis in SIBN?

Laura Francis has 355,697 restricted stock units, each representing a contingent right to receive one share of SI-BONE common stock upon settlement, which are included in her reported 493,900 directly held shares after the transactions.

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

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Available on EDGAR 08/21/2026 - 05:59 PM EDT Accepted by SEC EDGAR 08/21/2026 - 05:58 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)
08/20/2026

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	08/20/2026		S(1)		51,884	D	$19.46(2)	321,386	I	by Trust(3)
Common Stock	08/21/2026		S(1)		3,923	D	$20.02(4)	317,463	I	by Trust(3)
Common Stock								493,900(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 $19.10 to $19.73, 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. Shares held by The David & Laura Joint Rev Tr.

4. The price reported in column 4 is a weighted-average price. The shares were sold in multiple transactions ranging from $20.00 to $20.05, 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.

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	08/21/2026
	** 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)