SI-BONE director Jeffrey Dunn sells 20K shares

Q: How many SIBN shares did director Jeffrey W. Dunn sell, and at what price?

SI-BONE, Inc. director Jeffrey W. Dunn sold 20,000 common shares on October 1, 2026, at a weighted average price of $18.47 per share; prices ranged from $18.28 to $18.96. The sale was made under a Rule 10b5-1 trading plan dated May 7, 2025.

Q: How many options did Jeffrey W. Dunn exercise for SIBN?

He exercised options covering 20,000 common shares at an exercise price of $4.68 per share on October 1, 2026. The option row lists 66,260 options following the transaction.

The shares subject to the option vest in equal monthly installments over four years, subject to continued service through each relevant vesting date.

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Form Type

Rhea-AI Filing Summary

SI-BONE, Inc. director Jeffrey W. Dunn exercised options covering 20,000 shares at an exercise price of $4.68 per share on October 1, 2026, and sold 20,000 common shares at a weighted average price of $18.47 per share. The sale was made under a Rule 10b5-1 trading plan dated May 7, 2025; sale prices ranged from $18.28 to $18.96 per share. The option row lists 66,260 options following the transaction. The report also lists 81,073 common shares held by The Jeffrey W. Dunn Living Trust Dated May 17, 2012.

Insider Trade Summary

Exercise and Sale: 20,000 shares ($276K approx. pre-tax spread)

Exercise and Sale 4 txns

Insider DUNN JEFFREY W

Role Director

Sold 20,000 shs ($369K)

Approx. gross sale proceeds $369K

Approx. exercise cost $94K

Approx. pre-tax spread $276K

Type	Security	Shares	Price	Value
Exercise	Stock Option (Right to Buy) ^F5	20,000	$0.00	$0.00
Exercise	Common Stock	20,000	$4.68	$94K
Sale	Common Stock ^{F1, F2, F3}	20,000	$18.47	$369K
holding	Common Stock ^F4	--	--	--

Holdings After Transaction: Stock Option (Right to Buy) — 66,260 contracts (Direct); Common Stock — 16,057 shares (Direct); Common Stock — 81,073 shares (Indirect, by Trust)

Footnotes (5)

F1. The sale reported on this Form 4 was effected pursuant to a 10b5-1 trading plan dated May 7th, 2025.
F2. This transaction was executed in multiple trades at prices ranging from $18.28 USD to $18.96 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.
F3. Includes 10,957 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.
F4. Shares held by The Jeffrey W. Dunn Living Trust Dated May 17, 2012.
F5. 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

Options exercised: 20,000 options Exercise price: $4.68 per share Common shares sold: 20,000 shares +4 more

7 metrics

Options exercised 20,000 options October 1, 2026

Exercise price $4.68 per share Options exercised October 1, 2026

Common shares sold 20,000 shares October 1, 2026

Weighted average sale price $18.47 per share Sale on October 1, 2026

Sale price range $18.28 to $18.96 per share Multiple trades on October 1, 2026

Options following transaction 66,260 options Reported following the October 1, 2026 transaction

Trust-held common shares 81,073 shares Held by The Jeffrey W. Dunn Living Trust Dated May 17, 2012

Key Terms

10b5-1 trading plan, weighted average sale price, restricted stock units, vesting commencement date

4 terms

10b5-1 trading plan financial

"the sale was 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.

weighted average sale price financial

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

restricted stock units financial

"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.

vesting commencement date financial

"commencing on the vesting commencement date"

The vesting commencement date is the starting point when an employee begins earning ownership rights to their promised benefits, such as stock options or retirement contributions. Think of it like the day a savings account is opened—only after this date do the benefits start to grow and become fully available over time. It matters to investors because it marks when the clock begins ticking toward full ownership, affecting the timing and value of these benefits.

FAQ

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

How many SIBN shares did director Jeffrey W. Dunn sell, and at what price?

SI-BONE, Inc. director Jeffrey W. Dunn sold 20,000 common shares on October 1, 2026, at a weighted average price of $18.47 per share; prices ranged from $18.28 to $18.96. The sale was made under a Rule 10b5-1 trading plan dated May 7, 2025.

How many options did Jeffrey W. Dunn exercise for SIBN?

He exercised options covering 20,000 common shares at an exercise price of $4.68 per share on October 1, 2026. The option row lists 66,260 options following the transaction.

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

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 10/05/2026 - 05:55 PM Accepted by SEC EDGAR 10/05/2026 - 05:54 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^*

DUNN JEFFREY W

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2026

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	10/01/2026		M		20,000	A	$4.68	36,057	D
Common Stock	10/01/2026		S⁽¹⁾		20,000	D	$18.47⁽²⁾	16,057⁽³⁾	D
Common Stock								81,073	I	by Trust⁽⁴⁾

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)
Stock Option (Right to Buy)	$4.68	10/01/2026		M			20,000	⁽⁵⁾	03/01/2027	Common Stock	20,000	$0.00	66,260	D

Explanation of Responses:

1. The sale reported on this Form 4 was effected pursuant to a 10b5-1 trading plan dated May 7th, 2025.

2. This transaction was executed in multiple trades at prices ranging from $18.28 USD to $18.96 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 10,957 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.

4. Shares held by The Jeffrey W. Dunn Living Trust Dated May 17, 2012.

5. 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, Attorney-in-Fact for Jeffrey W. Dunn	10/05/2026
	** 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