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
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 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
Skyline Venture Partners V LP
(Last) (First) (Middle)
525 UNIVERSITY AVENUE, SUITE 1350
(Street)
PALO ALTO CA 94301
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
SI-BONE, Inc. [ SIBN ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
08/21/2019
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
X Form filed by More than One Reporting Person
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 08/21/2019 S 27,067 D $20.1367(1) 3,992,918 I By Skyline Venture Partners V, L.P(2)
Common Stock 08/21/2019 S 18,144 D $20.1729(3) 3,974,774 I By Skyline Venture Partners V, L.P(2)
Common Stock 08/22/2019 S 2,185 D $20.049(4) 3,972,589 I By Skyline Venture Partners V, L.P
Common Stock 08/23/2019 S 180 D $20.03 3,972,409 I By Skyline Venture Partners V, L.P
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
1. Name and Address of Reporting Person*
Skyline Venture Partners V LP
(Last) (First) (Middle)
525 UNIVERSITY AVENUE, SUITE 1350
(Street)
PALO ALTO CA 94301
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
Skyline Venture Management V, LLC
(Last) (First) (Middle)
525 UNIVERSITY AVENUE, SUITE 1350
(Street)
PALO ALTO CA 94301
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
Explanation of Responses:
1. The price reported in column 4 is a weighted-average price. The shares were sold in multiple transactions ranging from $20.05 to $20.21, inclusive. The Reporting Person undertakes to provide the Issuer, any securityholder of the Issuer, or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in these footnotes.
2. Shares held by Skyline Venture Partners V, L.P. ("SVP V"). Skyline Venture Management V, LLC ("LLC") is the general partner of SVP V and as such may be deemed to have voting and investment power with respect to the securities of SVP V. Dr. Freund, a member of the Issuer's board of directors, together with Yasunori Kaneko, are the managing directors of LLC and each may be deemed to have voting and investment power with respect to the securities held by SVP V. Dr. Freund and Mr. Kaneko disclaim beneficial ownership of such securities, except to the extent of their pecuniary interest therein.
3. The price reported in column 4 is a weighted-average price. The shares were sold in multiple transactions ranging from $20.02 to $20.26, inclusive.
4. The price reported in column 4 is a weighted-average price. The shares were sold in multiple transactions ranging from $20.02 to $20.18, inclusive.
Remarks:
Skyline Venture Partners V, L.P., By: Skyline Venture Management V, LLC, Its: General Partner, By: /s/ Michael A. Pisetsky , Attorney-in-Fact 08/23/2019
Skyline Venture Management V, LLC, By: /s/ Michael A. Pisetsky, Attorney-in-Fact 08/23/2019
** 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).
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