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

Aug 17, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SI-BONE, Inc. (SIBN)
CIK: 0001459839
Period of Report: 2021-08-12

Reporting Person: FRANCIS LAURA (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-08-12	Common Stock	M	13635.00	$22.00	Acquired	221812.00	Direct
2021-08-16	Common Stock	S	1678.00	$20.4621	Disposed	220134.00	Direct
2021-08-16	Common Stock	S	1530.00	$20.4621	Disposed	218604.00	Direct
2021-08-16	Common Stock	S	621.00	$20.4621	Disposed	217983.00	Direct
2021-08-16	Common Stock	S	1020.00	$20.4621	Disposed	216963.00	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-08-12	Stock Option (Right to Buy)	$22.00	M	13635.00	Disposed	2029-01-15	Common Stock (13635.00)	Direct

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: Includes 129,472 shares issuable on 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.

F3: The shares subject to the option vest in equal monthly installments over four years commencing on vesting commencement date, subject to
Reporting Person's continued service through each relevant vesting date.