SI-BONE CFO sells 3,311 shares for tax withholding

SI-BONE, Inc. Chief Financial Officer Anshul Maheshwari reported selling a total of 3,311 shares of common stock on October 2, 2025, in open-market transactions at weighted average prices of $14.2237 and $14.1711 per share.

Rhea-AI Filing Summary

SI-BONE, Inc. Chief Financial Officer Anshul Maheshwari reported selling a total of 3,311 shares of common stock on October 2, 2025, in open-market transactions at weighted average prices of $14.2237 and $14.1711 per share.

The company states these shares were sold solely to cover tax withholding obligations arising from the vesting of restricted stock units under a "sell to cover" arrangement and did not represent a discretionary trade by the CFO. After these transactions, Maheshwari directly holds 211,134 shares of common stock, including 150,203 shares issuable upon settlement of restricted stock units.

Insights

Corporate Governance Analyst

Routine tax-driven insider sale; retains significant stake.

The reported transactions show a sell-to-cover of 3,311 shares by the CFO on 10/02/2025 to satisfy tax withholding from RSU vesting. Such sales are common when equity grants vest and typically do not reflect a discretionary view on company prospects.

Retention of over 150,000 unvested RSUs and a beneficial holding above 211,000 shares suggests continued alignment with shareholders. Monitor future filings for any discretionary open-market sales or scheduled option exercises over the next 12 months.

Equity Markets Analyst

Small-volume insider sale at mid-teens price range; limited market impact.

The total sold volume (3,311 shares) and the reported weighted-average sale prices around $14.17–$14.22 represent a modest transaction relative to typical public-company float sizes. The filing discloses price ranges for the underlying trades and offers to provide trade-level detail if requested.

Because the sale is labeled as satisfying tax withholding, it is unlikely to be material to short-term liquidity or market valuation; investors may watch subsequent Form 4s for any change to trading pattern in the coming 12 months.

Insider Trade Summary

Net Seller: 3,311 shares

Net Sell 2 txns

Insider Maheshwari Anshul

Role Chief Financial Officer

Sold 3,311 shs ($47K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,754	$14.2237	$25K
Sale	Common Stock	1,557	$14.1711	$22K

Holdings After Transaction: Common Stock — 211,134 shares (Direct)

Footnotes (4)

1. F1. The sale reported on this Form 4 represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. The sale satisfies the tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person.
2. F2. This transaction was executed in multiple trades at prices ranging from $14.105 USD to $14.34 USD; the price reported above reflects the weighted average sale price. The Reporting Person undertakes to provide Issuer, any security holder 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 this footnote.
3. F3. This transaction was executed in multiple trades at prices ranging from $14.065 USD to $14.30 USD; the price reported above reflects the weighted average sale price. The Reporting Person undertakes to provide Issuer, any security holder 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 this footnote.
4. F4. Includes 150,203 shares issuable on the settlement of restricted stock units granted to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Key Figures

Total shares sold: 3,311 shares First sale price: $14.2237 per share Second sale price: $14.1711 per share +4 more

7 metrics

Total shares sold 3,311 shares Common stock sold on 2025-10-02 to cover tax withholding obligations

First sale price $14.2237 per share Weighted average price for 1,754 shares sold on 2025-10-02

Second sale price $14.1711 per share Weighted average price for 1,557 shares sold on 2025-10-02

Trade price range 1 $14.105 to $14.34 Price range of multiple trades in one reported sale transaction

Trade price range 2 $14.065 to $14.30 Price range of multiple trades in the other reported sale transaction

Post-transaction holding 211,134 shares Direct common stock holdings of the CFO after the reported sales

RSUs included 150,203 shares Shares issuable upon settlement of restricted stock units held by the CFO

Key Terms

restricted stock units, sell to cover, weighted average sale price, tax withholding obligations

4 terms

restricted stock units financial

"Includes 150,203 shares issuable on the 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.

sell to cover financial

"tax withholding obligations to be funded by a "sell to cover" transaction"

Sell to cover is when a person who receives company stock through options or awards sells just enough shares immediately to pay required taxes, exercise costs, or fees, keeping the rest. Think of it like cashing part of a bonus to cover the tax bill so you can keep the remainder. For investors, it can create predictable small selling pressure and slightly change the number of shares actually held by insiders without increasing long‑term dilution.

weighted average sale price financial

"the price reported above reflects the weighted average sale price"

tax withholding obligations financial

"shares required to be sold by the Reporting Person to cover tax withholding obligations"

FAQ

What insider transaction did SI-BONE (SIBN) report in this Form 4?

SI-BONE reported that its CFO, Anshul Maheshwari, sold 3,311 shares of common stock on October 2, 2025. The sale was conducted in open-market trades and was used to satisfy tax withholding obligations related to vested restricted stock units.

How many SI-BONE (SIBN) shares did the CFO sell and at what prices?

The CFO sold 1,754 shares at a weighted average price of $14.2237 and 1,557 shares at a weighted average price of $14.1711. Both transactions involved multiple trades within price ranges between about $14.065 and $14.34 per share.

Why were the SI-BONE (SIBN) shares sold by the CFO in this filing?

The filing states the shares were sold to cover tax withholding obligations triggered by the vesting of restricted stock units. This "sell to cover" transaction was described as non-discretionary and executed specifically to fund required tax withholdings, not as a voluntary portfolio change.

How many SI-BONE (SIBN) shares does the CFO hold after this sale?

After the reported transactions, the CFO directly holds 211,134 shares of SI-BONE common stock. This post-transaction balance is reported as his canonical holding and reflects his remaining direct equity position following the tax-related share sales.

What restricted stock units does the SI-BONE (SIBN) CFO have according to the Form 4?

The Form 4 notes that the CFO’s holdings include 150,203 shares issuable upon settlement of restricted stock units. Each restricted stock unit represents a contingent right to receive one share of SI-BONE’s common stock upon vesting and settlement.

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Accepted by SEC EDGAR 10/06/2025 - 06:10 PM 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).

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^*

Maheshwari Anshul

(Last) (First) (Middle)

C/O SI-BONE, INC

471 EL CAMINO REAL, SUITE 101

(Street)

SANTA CLARA CA 95050

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
SI-BONE, Inc. [ SIBN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

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

3. Date of Earliest Transaction (Month/Day/Year)
10/02/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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	10/02/2025		S(1)		1,754	D	$14.2237(2)	212,691	D
Common Stock	10/02/2025		S(1)		1,557	D	$14.1711(3)	211,134(4)	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 represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. The sale satisfies the tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person.

2. This transaction was executed in multiple trades at prices ranging from $14.105 USD to $14.34 USD; the price reported above reflects the weighted average sale price. The Reporting Person undertakes to provide Issuer, any security holder 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 this footnote.

3. This transaction was executed in multiple trades at prices ranging from $14.065 USD to $14.30 USD; the price reported above reflects the weighted average sale price. The Reporting Person undertakes to provide Issuer, any security holder 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 this footnote.

4. Includes 150,203 shares issuable on the settlement of restricted stock units granted to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

Remarks:

	/s/ Michael Pisetsky, Attorney-in-Fact for Anshul Maheshwari	10/06/2025
	** 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.
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