SI-BONE, Inc. — Director's Dealing 2018

Oct 16, 2018

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: SI-BONE, Inc. (SIBN)
CIK: 0001459839
Period of Report: 2018-10-16

Reporting Person: DUNN JEFFREY W (Director, Chairman, President & CEO)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	33333	Direct
Common Stock	547540	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option (right to buy)	$3.42	2024-07-21	Common Stock (272753)		Direct
Stock Option (right to buy)	$4.32	2025-05-25	Common Stock (101440)		Direct
Stock Option (right to buy)	$4.32	2026-07-26	Common Stock (114901)		Direct
Stock Option (right to buy)	$4.68	2027-03-01	Common Stock (126260)		Direct

Footnotes

F1: Includes shares issuable on settlement of restricted stock units granted to Reporting Person which vest as follows, subject to the Reporting Person's continued service through each relevant vesting date: 50% will vest on the first day of the first open trading window that occurs after the one-year anniversary of the closing of the Issuer's initial public offering and 50% will vest on the first day of the first open trading window that occurs after the two-year anniversary of the closing of the Issuer's initial public offering. Each restricted stock unit represents a contingent right to receive one share of Issuer's common stock.

F2: Shares held by The Jeffrey W. Dunn Living Trust Dated May 17, 2012.

F3: The shares subject to the option are fully vested and immediately exercisable.

F4: The shares subject to the option vest in equal monthly installments over four years commencing on April 15, 2015, subject to Reporting Person's continued service through each relevant vesting date. The shares subject to this option may be exercised prior to vesting, subject to Issuer's right to repurchase.

F5: The shares subject to the option vest in equal monthly installments over four years commencing on June 2, 2016, subject to Reporting Person's continued service through each relevant vesting date. The shares subject to this option may be exercised prior to vesting, subject to Issuer's right to repurchase.

F6: The shares subject to the option vest in equal monthly installments over four years commencing on September 6, 2017, subject to Reporting Person's continued service through each relevant vesting date. The shares subject to this option may be exercised prior to vesting, subject to Issuer's right to repurchase.