SI-BONE trust plans $76K Rule 144 stock sale

SI-BONE, Inc. (SIBN) received a notice that the DAVID & LAURA FRANCIS JOINT REVOCABLE TRUST dated 01/03/2003 intends to sell 3,923 shares of common stock under Rule 144 through Morgan Stanley Smith Barney LLC.

Rhea-AI Filing Summary

SI-BONE, Inc. (SIBN) received a notice that the DAVID & LAURA FRANCIS JOINT REVOCABLE TRUST dated 01/03/2003 intends to sell 3,923 shares of common stock under Rule 144 through Morgan Stanley Smith Barney LLC. The shares have an aggregate market value of $76,420.04 based on the stated market price.

The notice indicates SI-BONE had 44,818,575 shares of common stock outstanding. The securities to be sold include 1,901 shares from Performance Stock Units and 2,022 shares from Restricted Stock Units. In the past three months, the trust and Laura Francis reported prior Rule 10b5-1-related and other sales of common stock.

Key Figures

Shares of common stock to be sold: 3,923 shares Aggregate market value of planned sale: $76,420.04 SI-BONE common shares outstanding: 44,818,575 shares +5 more

8 metrics

Shares of common stock to be sold 3,923 shares Planned sale under Rule 144 by DAVID & LAURA FRANCIS JOINT REV TRU/A DTD 01/03/2003

Aggregate market value of planned sale $76,420.04 Value of 3,923 SI-BONE common shares referenced in Form 144

SI-BONE common shares outstanding 44,818,575 shares Shares of common stock outstanding for SI-BONE, Inc.

Shares from Performance Stock Units to be sold 1,901 shares Securities to be sold from Performance Stock Units dated 08/15/2026

Shares from Restricted Stock Units to be sold 2,022 shares Securities to be sold from Restricted Stock Units dated 05/15/2021

Prior 10b5-1 sale shares 51,884 shares 10b5-1 sale by the trust on 08/20/2026

Proceeds from prior 10b5-1 sale $1,009,558.87 Sale of 51,884 shares of SI-BONE common stock on 08/20/2026

Proceeds from Laura Francis sale $279,064.67 Sale of 14,956 shares of SI-BONE common stock on 08/17/2026

Key Terms

Rule 144, Performance Stock Units, Restricted Stock Units, 10b5-1

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Performance Stock Units financial

"Common | 08/15/2026 | Performance Stock Units | Issuer"

Performance stock units are a type of company award that grants employees shares of stock only if certain performance goals are met. They motivate employees to work toward specific company achievements, aligning their interests with those of shareholders. For investors, they can influence a company's future stock supply and reflect management’s confidence in reaching key targets.

Restricted Stock Units financial

"Common | 05/15/2021 | Restricted Stock Units | Issuer"

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.

10b5-1 regulatory

"10b5-1 Sales for DAVID & LAURA FRANCIS JOINT REV TRU/A DTD 01/03/2003"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

FAQ

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

What does SI-BONE, Inc. (SIBN) disclose in this Form 144 filing?

The filing states that the DAVID & LAURA FRANCIS JOINT REVOCABLE TRUST intends to sell 3,923 shares of SI-BONE common stock under Rule 144 through Morgan Stanley Smith Barney LLC, with an aggregate market value of $76,420.04 at the referenced price.

How many SI-BONE (SIBN) shares are outstanding according to this notice?

The notice states that SI-BONE had 44,818,575 shares of common stock outstanding at the time referenced in the Form 144 securities information section.

What types of equity awards are the SI-BONE (SIBN) shares being sold from?

The planned sales relate to Performance Stock Units (1,901 shares) and Restricted Stock Units (2,022 shares) that were issued by SI-BONE to the selling person or trust.

What prior 3‑month sales of SI-BONE (SIBN) stock are reported?

The filing lists a 10b5-1 sale by the DAVID & LAURA FRANCIS JOINT REVOCABLE TRUST of 51,884 shares for $1,009,558.87 on 08/20/2026, and a sale by Laura Francis of 14,956 shares for $279,064.67 on 08/17/2026.

Who is the broker for the planned SI-BONE (SIBN) Rule 144 sale?

The planned sale of 3,923 SI-BONE common shares is to be executed through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, New York, NY.

When was the SI-BONE (SIBN) Form 144 notice signed and by whom?

The notice is dated 08/21/2026 and is signed by /s/ Laura Francis, Trustee for the DAVID & LAURA FRANCIS JOINT REVOCABLE TRUST.

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Available on EDGAR 08/21/2026 - 05:06 PM EDT Accepted by SEC EDGAR 08/21/2026 - 05:05 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001218802
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	SI-BONE, INC.
SEC File Number	001-38701
Address of Issuer	471 El Camino Real, Suite 101 Santa Clara CALIFORNIA 95050
Phone	4082070700
Name of Person for Whose Account the Securities are To Be Sold	DAVID & LAURA FRANCIS JOINT REV TRU/A DTD 01/03/2003
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	3923	76420.04	44818575	08/21/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	08/15/2026	Performance Stock Units	Issuer			1901	08/15/2026	N/A
Common	05/15/2021	Restricted Stock Units	Issuer			2022	05/15/2021	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for DAVID & LAURA FRANCIS JOINT REV TRU/A DTD 01/03/2003 471 El Camino Real, Suite 101 Santa Clara CA 95050	Common	08/20/2026	51884	1009558.87
LAURA FRANCIS 471 El Camino Real, Suite 101 Santa Clara CA 95050	Common	08/17/2026	14956	279064.67

144: Remarks and Signature

Remarks	The 2,022 securities to be sold were acquired upon the vesting of restricted stock units during the period of 05/15/2021 through 11/15/2025.
Date of Notice	08/21/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/21/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Laura Francis, Trustee
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)