SI-BONE legal chief Michael A. Pisetsky sells 12,349 shares

Both reported sales were made under a Rule 10b5-1 trading plan dated June 13, 2025.

Available on EDGAR 11/09/2026 - 05:01 PM EST Accepted by SEC EDGAR 11/09/2026 - 05:01 PM EST Learn about SEC filing dates

This filing corrects an earlier one, and you can read the original Form 4 if you want to see what changed.

Rhea-AI Filing Summary

SI-BONE, Inc. (SIBN) reports that SVP, Ops & Adm/Chief Legal Ofr Michael A. Pisetsky exercised or converted 9,347 Phantom Stock and 3,002 stock options at $22 per share on November 4, 2026, acquiring matching amounts of common stock. He sold 12,349 shares directly at a weighted average of $25.0776 per share; Michael Pisetsky Sep Prop Tr sold 23,892 shares at a weighted average of $24.7849, leaving 40,167 shares in the trust. Both sales were made under a Rule 10b5-1 trading plan dated June 13, 2025.

Insider Trade Summary 10b5-1

Exercise and sale activity reported; no spread calculated

Exercise and Sale 6 txns

Insider PISETSKY MICHAEL A.

Role SVP, Ops & Adm/Chief Legal Ofr

Sold 36,241 shs ($902K)

Approx. gross sale proceeds $902K

Approx. exercise cost $272K

Type	Security	Shares	Price	Value
Exercise	Phantom Stock F6	9,347	$0.00	$0.00
Exercise	Stock Options (Right to buy) F6	3,002	$0.00	$0.00
Exercise	Common Stock F1	9,347	$22.00	$206K
Exercise	Common Stock F1	3,002	$22.00	$66K
Sale	Common Stock F1, F2, F3	12,349	$25.0776	$310K
Sale	Common Stock F1, F4, F5	23,892	$24.7849	$592K

Holdings After Transaction: Phantom Stock — 9,348 units (Direct); Stock Options (Right to buy) — 3,003 options (Direct); Common Stock — 164,444 shares (Direct); Common Stock — 40,167 shares (Indirect, by Trust)

Footnotes (6)

1. F1. The sale reported on this Form 4 was effected pursuant to a 10b5-1 trading plan dated June 13, 2025
2. F2. This transaction was executed in multiple trades at prices ranging from $25.00 USD to $25.25 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. Includes 124,139 shares issuable on settlement of restricted stock units granted to the Reporting Person. Each restricted stock unit represents a contingent right to receive one shares of the Issuer's common stock.
4. F4. This transaction was executed in multiple trades at prices ranging from $24.00 USD to $24.99 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.
5. F5. Shares held by the Michael Pisetsky Sep Prop Tr
6. F6. The shares subject to the option vest in equal monthly installments over four years commencing on the vesting commencement date, subject to Reporting Person's continued service through each relevant vesting date.

Key Figures

Phantom Stock exercised or converted: 9,347 Stock options exercised or converted: 3,002 Exercise price: $22 per share +4 more

7 metrics

Phantom Stock exercised or converted 9,347 November 4, 2026

Stock options exercised or converted 3,002 November 4, 2026

Exercise price $22 per share Reported exercises or conversions on November 4, 2026

Direct sale 12,349 shares at a weighted average of $25.0776 per share November 4, 2026

Trust sale 23,892 shares at a weighted average of $24.7849 per share Michael Pisetsky Sep Prop Tr; November 4, 2026

Trust shares following sale 40,167 shares Michael Pisetsky Sep Prop Tr

Shares issuable upon restricted stock unit settlement 124,139 shares Included in reported holdings

Key Terms

10b5-1 trading plan, Phantom Stock, restricted stock units, weighted average sale price

4 terms

10b5-1 trading plan financial

"effected pursuant to a 10b5-1 trading plan"

A 10b5-1 trading plan is a pre-arranged strategy that allows company insiders to buy or sell company stock at set times, regardless of their current knowledge about the company's situation. It acts like a scheduled appointment for trading, helping prevent the appearance of impropriety or insider trading. This plan provides a way for insiders to sell or buy shares in a controlled, transparent manner, offering reassurance to investors about fair trading practices.

Phantom Stock financial

"Security title: Phantom Stock"

A phantom stock is a form of compensation that gives employees or executives the benefits of stock ownership, such as the increase in stock value, without actually giving them real shares. It acts like a promise to pay the employee the equivalent value of company stock later, often as a bonus or incentive. This allows companies to motivate and reward staff without diluting ownership or transferring actual shares.

restricted stock units financial

"shares issuable on 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.

weighted average sale price financial

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

FAQ

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

How many SIBN shares did Michael A. Pisetsky and his trust sell?

Michael A. Pisetsky sold 12,349 shares at a weighted average of $25.0776 per share, and Michael Pisetsky Sep Prop Tr sold 23,892 shares at a weighted average of $24.7849 per share on November 4, 2026. Both sales were made under a Rule 10b5-1 trading plan dated June 13, 2025.

How many shares remained in Michael Pisetsky's trust after the SIBN sale?

Michael Pisetsky Sep Prop Tr held 40,167 shares following its reported sale on November 4, 2026.

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

Form 4 Insider Transactions: What Each Field Means →

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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).

X

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^*

PISETSKY MICHAEL A.

(Last) (First) (Middle)

C/O SI-BONE, INC.

88 W PLUMERIA DRIVE

(Street)

SAN JOSE CALIFORNIA 95134

(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)
	SVP, Ops & Adm/Chief Legal Ofr

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
11/04/2026

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)
11/06/2026

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	11/04/2026		M(1)		9,347	A	$22	173,791	D
Common Stock	11/04/2026		M(1)		3,002	A	$22	176,793	D
Common Stock	11/04/2026		S(1)		12,349	D	$25.0776(2)	164,444(3)	D
Common Stock	11/04/2026		S(1)		23,892	D	$24.7849(4)	40,167	I	by Trust(5)

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
Phantom Stock	$22	11/04/2026		M			9,347	(6)	01/15/2029	Common Stock	9,347	$0.00	9,348	D
Stock Options (Right to buy)	$22	11/04/2026		M			3,002	(6)	01/15/2029	Common Stock	3,002	$0.00	3,003	D

Explanation of Responses:

1. The sale reported on this Form 4 was effected pursuant to a 10b5-1 trading plan dated June 13, 2025

2. This transaction was executed in multiple trades at prices ranging from $25.00 USD to $25.25 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. Includes 124,139 shares issuable on settlement of restricted stock units granted to the Reporting Person. Each restricted stock unit represents a contingent right to receive one shares of the Issuer's common stock.

4. This transaction was executed in multiple trades at prices ranging from $24.00 USD to $24.99 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.

5. Shares held by the Michael Pisetsky Sep Prop Tr

6. The shares subject to the option vest in equal monthly installments over four years commencing on the vesting commencement date, subject to Reporting Person's continued service through each relevant vesting date.

Remarks:

	/s/ Michael A. Pisetsky	11/09/2026
	** 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)