SI-BONE (SIBN) CFO sells 3,318 shares in tax-related RSU vesting

Q: What did SI-BONE (SIBN) CFO Anshul Maheshwari report in this Form 4 filing?

The Form 4 shows CFO Anshul Maheshwari sold 3,318 shares of SI-BONE common stock on April 2, 2026. These transactions were linked to tax withholding on vested restricted stock units rather than discretionary open-market selling, according to the footnotes in the filing.

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

Maheshwari sold 1,758 shares at a weighted average price of $12.9228 and 1,560 shares at $12.8137 . Footnotes note each sale was executed in multiple trades within price ranges between about $12.41 and $13.10 per share.

Q: Why were SI-BONE (SIBN) shares sold by the CFO in this Form 4?

The filing states the sales were required to cover tax withholding obligations related to the vesting of restricted stock units. They were structured as "sell to cover" transactions, meaning shares were sold specifically to pay taxes, not as discretionary portfolio trades by the CFO.

Q: How many SI-BONE (SIBN) shares does the CFO hold after these transactions?

After the reported sales, CFO Anshul Maheshwari directly owns 263,148 shares of SI-BONE common stock. This total includes 193,458 shares that will be issued upon settlement of restricted stock units, with each unit representing the right to receive one common share.

Q: What do the restricted stock units in the SI-BONE (SIBN) Form 4 represent?

The filing notes 193,458 shares are issuable upon settlement of restricted stock units granted to the CFO. Each restricted stock unit represents a contingent right to receive one share of SI-BONE common stock, typically upon vesting according to the company’s equity plan.

Filing Impact

(Neutral)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

SI-BONE, Inc. Chief Financial Officer Anshul Maheshwari reported selling 3,318 shares of common stock in two open-market transactions on April 2, 2026, at weighted average prices of $12.9228 and $12.8137 per share.

According to the footnotes, these sales were required to cover tax withholding obligations arising from the vesting of restricted stock units and were executed as "sell to cover" transactions, rather than discretionary trades. After these sales, Maheshwari directly owns 263,148 shares of SI-BONE common stock, including 193,458 shares issuable upon settlement of restricted stock units.

Insights

CFO’s small share sale is a routine tax-related "sell to cover" event.

The Chief Financial Officer of SI-BONE, Inc., Anshul Maheshwari, sold 3,318 shares of common stock in two transactions around $12.9 per share. Footnotes specify these were required sales to pay tax withholding from vesting restricted stock units, not discretionary selling.

This type of transaction is common when equity awards vest, allowing taxes to be satisfied without the executive providing cash. Maheshwari still directly holds 263,148 shares, including 193,458 shares tied to restricted stock units, so the sale represents a small portion of his overall equity exposure.

Because the sales were tax-driven and the remaining ownership stake is substantial, this filing is best viewed as an administrative update related to equity compensation rather than a meaningful change in insider sentiment toward SI-BONE (SIBN).

Insider Trade Summary

Net Seller: 3,318 shares ($42,708)

Net Sell 2 txns

Insider Maheshwari Anshul

Role Chief Financial Officer

Sold 3,318 shs ($43K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,758	$12.9228	$23K
Sale	Common Stock	1,560	$12.8137	$20K

Holdings After Transaction: Common Stock — 264,708 shares (Direct)

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 $12.52 USD to $13.08 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 $12.41 USD to $13.10 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 193,458 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 (total): 3,318 shares First sale price: $12.9228 per share Second sale price: $12.8137 per share +2 more

5 metrics

Shares sold (total) 3,318 shares Open-market sales on April 2, 2026 to cover tax withholding

First sale price $12.9228 per share Weighted average price for 1,758 shares sold

Second sale price $12.8137 per share Weighted average price for 1,560 shares sold

Shares owned after transactions 263,148 shares Direct ownership by CFO following April 2, 2026 sales

RSU-based shares included 193,458 shares Shares issuable upon settlement of restricted stock units held by CFO

Key Terms

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

4 terms

restricted stock units financial

"Includes 193,458 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"

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

"transaction_action": "open-market sale""

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.

Form 4 Insider Transactions: What Each Field Means →

04/03/2026 - 06:11 PM

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)
04/02/2026

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	04/02/2026		S⁽¹⁾		1,758	D	$12.9228⁽²⁾	264,708	D
Common Stock	04/02/2026		S⁽¹⁾		1,560	D	$12.8137⁽³⁾	263,148⁽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 $12.52 USD to $13.08 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 $12.41 USD to $13.10 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 193,458 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	04/03/2026
	** 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

FAQ

What did SI-BONE (SIBN) CFO Anshul Maheshwari report in this Form 4 filing?

The Form 4 shows CFO Anshul Maheshwari sold 3,318 shares of SI-BONE common stock on April 2, 2026. These transactions were linked to tax withholding on vested restricted stock units rather than discretionary open-market selling, according to the footnotes in the filing.

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

Maheshwari sold 1,758 shares at a weighted average price of $12.9228 and 1,560 shares at $12.8137. Footnotes note each sale was executed in multiple trades within price ranges between about $12.41 and $13.10 per share.

Why were SI-BONE (SIBN) shares sold by the CFO in this Form 4?

The filing states the sales were required to cover tax withholding obligations related to the vesting of restricted stock units. They were structured as "sell to cover" transactions, meaning shares were sold specifically to pay taxes, not as discretionary portfolio trades by the CFO.

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

After the reported sales, CFO Anshul Maheshwari directly owns 263,148 shares of SI-BONE common stock. This total includes 193,458 shares that will be issued upon settlement of restricted stock units, with each unit representing the right to receive one common share.

What do the restricted stock units in the SI-BONE (SIBN) Form 4 represent?

The filing notes 193,458 shares are issuable upon settlement of restricted stock units granted to the CFO. Each restricted stock unit represents a contingent right to receive one share of SI-BONE common stock, typically upon vesting according to the company’s equity plan.