SEC FORM 3 SEC Form 3
FORM 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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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1. Name and Address of Reporting Person*
MPM Oncology Impact Management GP LLC

(Last) (First) (Middle)
C/O MPM CAPITAL
450 KENDALL STREET

(Street)
CAMBRIDGE MA 02142

(City) (State) (Zip)
2. Date of Event Requiring Statement (Month/Day/Year)
03/25/2017
3. Issuer Name and Ticker or Trading Symbol
Spring Bank Pharmaceuticals, Inc. [ SBPH ]
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
5. 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 Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock 833,839 I See footnote(1)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year) 3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Warrant (right to buy) 05/24/2017(2) 11/23/2021 Common Stock 603,070 10.79 I See footnote(1)
1. Name and Address of Reporting Person*
MPM Oncology Impact Management GP LLC

(Last) (First) (Middle)
C/O MPM CAPITAL
450 KENDALL STREET

(Street)
CAMBRIDGE MA 02142

(City) (State) (Zip)
1. Name and Address of Reporting Person*
MPM Oncology Impact Management LP

(Last) (First) (Middle)
450 KENDALL STREET

(Street)
CAMBRIDGE MA 02142

(City) (State) (Zip)
1. Name and Address of Reporting Person*
Oncology Impact Fund (Cayman) Management L.P.

(Last) (First) (Middle)
450 KENDALL STREET

(Street)
CAMBRIDGE MA 02142

(City) (State) (Zip)
1. Name and Address of Reporting Person*
UBS Oncology Impact Fund L.P.

(Last) (First) (Middle)
450 KENDALL STREET

(Street)
CAMBRIDGE MA 02142

(City) (State) (Zip)
Explanation of Responses:
1. MPM Oncology Impact Management GP LLC ("MPM GP") is the general partner of MPM Oncology Impact Management LP ("MPM Management"), which is the general partner of Oncology Impact Fund (Cayman) Management L.P. ("MPM Cayman"), which is the general partner of UBS Oncology Impact Fund L.P. ("UBS Oncology"). The reported securities are owned indirectly by MPM GP, MPM Management and MPM Cayman, and are owned directly by UBS Oncology. Ansbert Gadicke is the sole member of MPM GP. However, all voting and investment decisions are made by an investment committee comprised of three or more members, including Ansbert Gadicke. Each member of the investment committee expressly disclaims beneficial ownership of the reported securities.
2. The warrant was issued on November 23, 2016 but did not become exercisable until May 24, 2017.
/s/ Ansbert Gadicke, Managing Member - MPM GP 02/06/2018
/s/ Ansbert Gadicke, Managing Member - MPM Management 02/06/2018
/s/ Ansbert Gadicke, Managing Member - MPM Cayman 02/06/2018
/s/ Ansbert Gadicke, Managing Member - UBS Oncology 02/06/2018
** 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 5 (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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