SI-BONE, Inc. — Director's Dealing 2021

May 19, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SI-BONE, Inc. (SIBN)
CIK: 0001459839
Period of Report: 2021-05-17

Reporting Person: DUNN JEFFREY W (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-17	Common Stock	S	3909.00	$31.4016	Disposed	197780.00	Direct
2021-05-17	Common Stock	S	4492.00	$31.4016	Disposed	184764.00	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	56128.00	Indirect

Footnotes

F1: 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.

F2: Represents shares issuable on the settlement of the net restricted stock units granted and canceled to the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F3: Includes 1,442 shares acquired under the SI-BONE, Inc. 2018 Employee Stock Purchase Plan on May 17, 2017.

F4: Reflects the transfer of shares from the Reporting Person to The Jeffrey W. Dunn Living Trust Dated May 17, 2012

F5: Shares held by The Jeffrey W. Dunn Living Trust Dated May 17, 2012.