SI-BONE (NASDAQ: SIBN) CFO sells shares to cover RSU tax withholding

Filing Impact

(Neutral)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

SI-BONE, Inc. Chief Financial Officer Anshul Maheshwari reported an open-market sale of 3,317 shares of common stock on July 2, 2026. The transactions were executed at weighted average prices of $16.7348 for 1,560 shares and $16.8017 for 1,757 shares.

According to the disclosure, these sales were required to cover tax withholding obligations tied to the vesting of restricted stock units, using a non-discretionary “sell to cover” arrangement. After these sales, Maheshwari directly holds 256,560 shares, including 177,141 shares issuable upon settlement of restricted stock units, so the reported sales represent only a small portion of his overall equity position.

Insider Trade Summary

Net Seller: 3,317 shares ($55,627)

Net Sell 2 txns

Insider Maheshwari Anshul

Role Chief Financial Officer

Sold 3,317 shs ($56K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,757	$16.8017	$30K
Sale	Common Stock	1,560	$16.7348	$26K

Holdings After Transaction: Common Stock — 258,120 shares (Direct, null)

Footnotes (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. This transaction was executed in multiple trades at prices ranging from $16.48 USD to $16.94 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. This transaction was executed in multiple trades at prices ranging from $16.48 USD to $16.955 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. Includes 177,141 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

Shares sold (block 1): 1,560 shares Shares sold (block 2): 1,757 shares Total shares sold: 3,317 shares +4 more

7 metrics

Shares sold (block 1) 1,560 shares Open-market sale at $16.7348 per share on July 2, 2026

Shares sold (block 2) 1,757 shares Open-market sale at $16.8017 per share on July 2, 2026

Total shares sold 3,317 shares Combined open-market sales to cover tax withholding

Shares held after transactions 256,560 shares Direct holdings following July 2, 2026 sales

RSU-linked shares 177,141 shares Shares issuable upon settlement of restricted stock units held by CFO

Sale price range (block 1) $16.48–$16.94 Multiple trades; weighted average $16.7348

Sale price range (block 2) $16.48–$16.955 Multiple trades; weighted average $16.8017

Key Terms

restricted stock units, sell to cover, weighted average sale price, open-market sale

4 terms

restricted stock units financial

"Includes 177,141 shares issuable on the settlement of restricted stock units granted to the Reporting Person."

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

"The sale satisfies the tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade"

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."

open-market sale financial

"Sale in open market or private transaction"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/06/2026 - 05:08 PM Accepted by SEC EDGAR 07/06/2026 - 05:07 PM

FAQ

What insider transaction did SI-BONE (SIBN) disclose for its CFO?

SI-BONE reported that CFO Anshul Maheshwari sold 3,317 shares of common stock. The sales occurred on July 2, 2026, in two open-market transactions at weighted average prices around $16.73 and $16.80 per share.

Why did SI-BONE (SIBN) CFO Anshul Maheshwari sell shares?

The shares were sold to cover tax withholding obligations from vesting restricted stock units. The filing states this was a required “sell to cover” transaction and not a discretionary trade, meaning it was driven by tax needs rather than an investment decision.

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

After the reported transactions, CFO Anshul Maheshwari holds 256,560 shares directly. This figure includes 177,141 shares that will be issued upon settlement of restricted stock units, indicating a substantial remaining equity stake in SI-BONE.

At what prices did the SI-BONE (SIBN) CFO’s Form 4 sales occur?

The filing shows two weighted average sale prices for the CFO’s trades. One block of 1,560 shares sold at $16.7348 per share and another 1,757 shares sold at $16.8017 per share, each executed across multiple trades within disclosed price ranges.

What are restricted stock units (RSUs) in the SI-BONE (SIBN) Form 4 filing?

Restricted stock units are equity awards that convert into shares once vesting conditions are met. The filing notes 177,141 shares are issuable on settlement of RSUs granted to the CFO, with each unit representing a contingent right to receive one SI-BONE common share.

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

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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/02/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	07/02/2026		S⁽¹⁾		1,757	D	$16.8017⁽²⁾	258,120	D
Common Stock	07/02/2026		S⁽¹⁾		1,560	D	$16.7348⁽³⁾	256,560⁽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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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 $16.48 USD to $16.94 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 $16.48 USD to $16.955 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 177,141 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	07/07/2026
	** 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)

Source: View Original Filing on SEC EDGAR