SI-BONE director granted 10,957 RSUs

Davis Timothy E JR reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Davis Timothy E JR reported acquisition or exercise transactions in this Form 4 filing.

SI-BONE, Inc. director Timothy E. Davis Jr. reported a grant of 10,957 restricted stock units (RSUs), each representing a contingent right to receive one share of common stock. These RSUs vest 100% at the earlier of the next annual general meeting or one year from the vesting commencement date, contingent on continued board service. Following this award, he is shown as directly holding 76,679 shares, including the RSUs.

Insider Trade Summary

Grant/Award: 10,957 shares

Grant/Award 1 txn

Insider Davis Timothy E JR

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	10,957	$0.00	$0.00

Holdings After Transaction: Common Stock — 76,679 shares (Direct)

Footnotes (2)

1. F1. Reflects 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. The shares subject to the restricted stock unit will vest 100% upon the earlier of (i) the next annual general meeting of the stockholders of the Company or (ii) the date one year from the Vesting Commencement Date, subject to the Reporting Person's continuous service as a member of the Company's Board of Directors until such date.
2. F2. 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.

Key Figures

RSUs granted: 10,957 units Shares after transaction: 76,679 shares Grant price per share: $0.0000 per share

3 metrics

RSUs granted 10,957 units Restricted stock units awarded to director on June 4, 2026

Shares after transaction 76,679 shares Direct holdings following RSU grant, including 10,957 RSUs

Grant price per share $0.0000 per share Reported transaction price for RSU award

Key Terms

restricted stock units, contingent right, vesting commencement date, Board of Directors

4 terms

restricted stock units financial

"Reflects 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.

contingent right financial

"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock."

vesting commencement date financial

"the date one year from the Vesting Commencement Date, subject to the Reporting Person's continuous service"

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.

Board of Directors financial

"subject to the Reporting Person's continuous service as a member of the Company's Board of Directors until such date."

The Board of Directors is a group of people chosen by a company's owners to help make big decisions and oversee how the company is run. They act like a team of advisors or managers, making sure the company stays on track and meets its goals. Their choices can influence the company's success and how it grows.

FAQ

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

What did SI-BONE (SIBN) director Timothy E. Davis Jr. report in this Form 4?

He reported receiving 10,957 restricted stock units in SI-BONE common stock. Each RSU represents a contingent right to one share, granted at no cash cost, reflecting equity-based compensation for his service on the company’s Board of Directors.

How many SI-BONE (SIBN) shares does Timothy E. Davis Jr. hold after the reported transaction?

After the reported RSU grant, he is shown as directly holding 76,679 shares of SI-BONE common stock. This figure includes 10,957 shares issuable upon settlement of the newly granted restricted stock units, assuming the vesting conditions are satisfied.

What are the vesting terms of the 10,957 RSUs granted to the SI-BONE (SIBN) director?

The 10,957 restricted stock units vest 100% on the earlier of the next annual general meeting of stockholders or one year from the vesting commencement date, provided he continues serving on SI-BONE’s Board of Directors through the applicable vesting date.

Did Timothy E. Davis Jr. pay any price per share for the SI-BONE (SIBN) RSU grant?

No cash price per share is shown for the 10,957 restricted stock units, which is typical for equity awards. The Form 4 reports a transaction price of 0.0000 per share, indicating a compensatory grant rather than a market purchase.

Do the RSUs reported in the SI-BONE (SIBN) Form 4 provide immediate ownership of shares?

The RSUs provide a contingent right, not immediate share ownership. Each restricted stock unit converts into one share of SI-BONE common stock only upon vesting and settlement, subject to the director’s continued service on the company’s Board of Directors.

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

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Accepted by SEC EDGAR 06/08/2026 - 05:40 PM EDT Learn about SEC filing dates

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^*

Davis Timothy E JR

(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)
06/04/2026

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)

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	06/04/2026		A		10,957(1)	A	$0.00	76,679(2)	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Reflects 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. The shares subject to the restricted stock unit will vest 100% upon the earlier of (i) the next annual general meeting of the stockholders of the Company or (ii) the date one year from the Vesting Commencement Date, subject to the Reporting Person's continuous service as a member of the Company's Board of Directors until such date.

2. 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.

Remarks:

	/s/ Michael A. Pisetsky, Attorney-in-Fact for Timothy E. Davis, Jr.	06/08/2026
	** 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)