SI-BONE officer proposes $125K sale of 5,270 shares

Prior sales identified as 10b5-1 sales include transactions dated August 19, August 21, August 24, October 5 and October 29, 2026.

Available on EDGAR 11/04/2026 - 04:31 PM EST Accepted by SEC EDGAR 11/04/2026 - 04:30 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Anshul Maheshwari, an officer of SI-BONE, Inc., reported a proposed sale of 5,270 common shares through Morgan Stanley Smith Barney LLC, at an aggregate market value of $125,267.90. The approximate sale date is November 4, 2026. The reported shares outstanding figure for SI-BONE is 45,113,087.

Key Figures

Proposed sale: 5,270 common shares Aggregate market value: $125,267.90 Shares outstanding: 45,113,087 shares +3 more

6 metrics

Proposed sale 5,270 common shares Approximate sale date: November 4, 2026

Aggregate market value $125,267.90 Proposed sale of 5,270 common shares

Shares outstanding 45,113,087 shares SI-BONE issuer information

Prior sale 3,738 common shares October 29, 2026; identified as a 10b5-1 sale

Reported sale value $84,105.00 3,738 common shares sold October 29, 2026

Prior sale 1,731 common shares October 5, 2026; identified as a 10b5-1 sale

Key Terms

Rule 144, 10b5-1 Sales, Restricted Stock Units, Employee Stock Purchase Plan

4 terms

Rule 144 regulatory

"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.

10b5-1 Sales regulatory

"10b5-1 Sales for ANSHUL MAHESHWARI"

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

Restricted Stock Units financial

"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.

Employee Stock Purchase Plan financial

"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.

FAQ

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

How many SIBN shares did Anshul Maheshwari propose to sell?

Anshul Maheshwari, an officer of SI-BONE, Inc., proposed to sell 5,270 common shares through Morgan Stanley Smith Barney LLC. The reported aggregate market value is $125,267.90, and the approximate sale date is November 4, 2026.

Which of Anshul Maheshwari's prior SIBN sales were identified as 10b5-1 sales?

The sales identified as 10b5-1 sales were 5,747 shares on August 19, 2026; 11,228 shares on August 21, 2026; 11,636 shares on August 24, 2026; 1,731 shares on October 5, 2026; and 3,738 shares on October 29, 2026.

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

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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	0001853089
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	88 West Plumeria Drive San Jose CALIFORNIA 95134
Phone	4082070700
Name of Person for Whose Account the Securities are To Be Sold	ANSHUL MAHESHWARI
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	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	5270	125267.90	45113087	11/04/2026	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	04/01/2024	Restricted Stock Units	Issuer			3247	04/01/2024	N/A
Common	05/15/2025	Employee Stock Purchase Plan	Issuer			2023	05/15/2025	Cash

* 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 ANSHUL MAHESHWARI 88 West Plumeria Drive San Jose CA 95134	Common	10/29/2026	3738	84105.00
10b5-1 Sales for ANSHUL MAHESHWARI 88 West Plumeria Drive San Jose CA 95134	Common	10/05/2026	1731	33754.50
ANSHUL MAHESHWARI 88 West Plumeria Drive San Jose CA 95134	Common	10/02/2026	3318	60324.97
10b5-1 Sales for ANSHUL MAHESHWARI 88 West Plumeria Drive San Jose CA 95134	Common	08/24/2026	11636	233971.66
10b5-1 Sales for ANSHUL MAHESHWARI 88 West Plumeria Drive San Jose CA 95134	Common	08/21/2026	11228	224791.78
10b5-1 Sales for ANSHUL MAHESHWARI 88 West Plumeria Drive San Jose CA 95134	Common	08/19/2026	5747	112336.11
ANSHUL MAHESHWARI 88 West Plumeria Drive San Jose CA 95134	Common	08/17/2026	4665	87015.62

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock units during the period of 4/1/2024 through 7/1/2024.
Date of Notice	11/04/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/17/2025
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/ Anshul Maheshwari
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)