SI-BONE's Michael A. Pisetsky sells 29,665 shares

The officer's post-sale direct position was 164,444 shares, including 124,139 shares issuable upon settlement of restricted stock units.

Available on EDGAR 11/02/2026 - 05:19 PM EST Accepted by SEC EDGAR 11/02/2026 - 05:19 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

SI-BONE, Inc. officer Michael A. Pisetsky, SVP, Ops & Adm/Chief Legal Ofr, sold 29,665 common shares on October 29, 2026, at a weighted average price of $22.1050 per share under a Rule 10b5-1 trading plan dated June 13, 2025. His reported direct position afterward was 164,444 shares, including 124,139 shares issuable upon settlement of restricted stock units. Separately, 76,408 shares were held by the Michael Pisetsky Sep Prop Tr following a transfer from Pisetsky.

Insider Trade Summary 10b5-1

Net Seller: 29,665 shares

Net Sell 1 txn

Insider PISETSKY MICHAEL A.

Role SVP, Ops & Adm/Chief Legal Ofr

Sold 29,665 shs ($656K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2, F3	29,665	$22.105	$656K
Holding	Common Stock F4, F5	--	--	--

Holdings After Transaction: Common Stock — 164,444 shares (Direct); Common Stock — 76,408 shares (Indirect, by Trust)

Footnotes (5)

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 $22.00 USD to $22.29 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. Reflects the transfer of shares from the Reporting Person to the Michael Pisetsky Sep Prop Tr
5. F5. Shares held by the Michael Pisetsky Sep Prop Tr

Key Figures

Shares sold: 29,665 shares Weighted average sale price: $22.1050 per share Prices across trades: $22.00 to $22.29 per share +3 more

6 metrics

Shares sold 29,665 shares Common shares sold on October 29, 2026

Weighted average sale price $22.1050 per share Sale on October 29, 2026

Prices across trades $22.00 to $22.29 per share Range for the sale's multiple trades

Direct shares after transaction 164,444 shares Reported position includes shares issuable upon settlement of restricted stock units

Shares issuable upon settlement of restricted stock units 124,139 shares Included in the reported direct position after the transaction

Shares held by trust 76,408 shares Held by the Michael Pisetsky Sep Prop Tr

Key Terms

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

3 terms

Rule 10b5-1 trading plan financial

"sale effected pursuant to a 10b5-1 trading plan dated June 13, 2025"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average sale price financial

"price reported above reflects the weighted average sale price"

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.

FAQ

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

How many SIBN shares did Michael A. Pisetsky sell and at what price?

Michael A. Pisetsky, SI-BONE's SVP, Ops & Adm/Chief Legal Ofr, sold 29,665 shares on October 29, 2026, at a weighted average price of $22.1050 per share under a Rule 10b5-1 trading plan dated June 13, 2025. The individual trades ranged from $22.00 to $22.29 per share.

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)
10/29/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	10/29/2026		S(1)		29,665(2)	D	$22.105	164,444(3)	D
Common Stock								76,408	I	by Trust(4)(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

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 $22.00 USD to $22.29 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. Reflects the transfer of shares from the Reporting Person to the Michael Pisetsky Sep Prop Tr

5. Shares held by the Michael Pisetsky Sep Prop Tr

Remarks:

	/s/ Michael A. Pisetsky	11/02/2026
	** 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)