SI-BONE trust plans $1.0M Rule 144 stock sale

SI-BONE, Inc. (SIBN) has a notice of proposed sale of securities under Rule 144 filed for the account of the David & Laura Francis Joint Revocable Trust.

Rhea-AI Filing Summary

SI-BONE, Inc. (SIBN) has a notice of proposed sale of securities under Rule 144 filed for the account of the David & Laura Francis Joint Revocable Trust. The trust plans to sell up to 51,884 shares of common stock through Morgan Stanley Smith Barney LLC, with an aggregate market value of $1,033,010.44 and with 44,818,575 shares outstanding as referenced in the notice. The shares were acquired upon vesting of restricted stock units between 05/15/2021 and 11/15/2025. The filing also notes a prior sale by Laura Francis in the past three months of 14,956 shares of common stock for $279,064.67.

Key Figures

Shares to be sold under Rule 144: 51,884 shares Aggregate market value of shares to be sold: $1,033,010.44 Shares outstanding: 44,818,575 shares +4 more

7 metrics

Shares to be sold under Rule 144 51,884 shares Planned sale by David & Laura Francis Joint Revocable Trust

Aggregate market value of shares to be sold $1,033,010.44 Value of 51,884 SI-BONE, Inc. common shares covered by the notice

Shares outstanding 44,818,575 shares SI-BONE, Inc. common stock referenced in the Form 144

Shares sold in past 3 months 14,956 shares Sale by Laura Francis on 08/17/2026

Proceeds from recent sale $279,064.67 Gross proceeds from 14,956 SI-BONE, Inc. shares sold on 08/17/2026

RSU vesting period start date 05/15/2021 Start of period when RSUs that produced these shares vested

RSU vesting period end date 11/15/2025 End of period when RSUs that produced these shares vested

Key Terms

Rule 144, Restricted Stock Units, aggregate market value

3 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.

Restricted Stock Units financial

"The securities to be sold were acquired upon 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.

aggregate market value financial

"51884 | 1033010.44 | 44818575 | 08/20/2026"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

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

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

The filing reports that the David & Laura Francis Joint Revocable Trust intends to sell up to 51,884 shares of SI-BONE, Inc. common stock under Rule 144, with an aggregate market value of $1,033,010.44, through Morgan Stanley Smith Barney LLC.

How many SI-BONE (SIBN) shares are covered by this planned Rule 144 sale?

The notice covers a proposed sale of up to 51,884 shares of common stock of SI-BONE, Inc. for the account of the David & Laura Francis Joint Revocable Trust.

What is the aggregate market value of the SI-BONE (SIBN) shares in the Form 144?

The shares to be sold have an aggregate market value of $1,033,010.44, as stated in the Form 144 notice for 51,884 shares of SI-BONE, Inc. common stock.

How many SI-BONE (SIBN) shares are reported as outstanding in the Form 144?

The Form 144 references 44,818,575 shares outstanding of SI-BONE, Inc. common stock in connection with the proposed sale by the David & Laura Francis Joint Revocable Trust.

Were there recent SI-BONE (SIBN) share sales by Laura Francis before this notice?

Yes. The filing reports that 14,956 shares of SI-BONE, Inc. common stock were sold on 08/17/2026 by Laura Francis, with total proceeds of $279,064.67 during the prior three months.

How were the SI-BONE (SIBN) shares in this Form 144 acquired?

The securities covered by the notice were acquired from the issuer upon vesting of restricted stock units during the period from 05/15/2021 through 11/15/2025.

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

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Accepted by SEC EDGAR 08/20/2026 - 04:35 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	51884	1033010.44	44818575	08/20/2026	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	05/15/2021	Restricted Stock Units	Issuer			51884	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
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 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	08/20/2026
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)