SI-BONE INC

Ticker: SIBN CUSIP: 825704109 Class: Common Stock

RTW INVESTMENTS, LP's Holding History (CIK: 0001493215)

Note: Option positions (PUT/CALL) are excluded.

Q1 2019

Shares 1,269,194 Value ($000) $23,912 Avg Close $19.35 Range $17.09 - $23.03

Q4 2018

Shares 804,327 Value ($000) $16,802 Avg Close $18.92 Range $16.27 - $21.96

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	1,269,194	$23,912	$19.35	$17.09 - $23.03
Q4 2018	804,327	$16,802	$18.92	$16.27 - $21.96