Filing Details

The remainder of this cover page shall be filled out for a reporting persons initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

NAMES OF REPORTING PERSONS

Excel Ventures II GP, LLC

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

(a)  ☐        (b)  ☒ (1)

SEC USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

SOLE VOTING POWER

0

SHARED VOTING POWER

1,497,696 (2)

SOLE DISPOSITIVE POWER

0

SHARED DISPOSITIVE POWER

1,497,696 (2)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

1,497,696 (2)

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

☐

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

4.10% (3)

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

OO

This statement on Schedule 13G is filed by Excel Ventures II GP, LLC (Excel GP), Excel Venture Fund II, L.P. (Excel), Frederick R. Blume (Blume), Juan Enriquez (Enriquez) and Caleb Winder (Winder and, together with each of the foregoing, the Reporting Persons). The Reporting Persons expressly disclaim status as a group for purposes of this Schedule 13G.

Includes 1,473,559 shares of Common Stock and an immediately exercisable warrant to purchase 24,137 shares held by Excel as of December 31, 2018.

This percentage is calculated based upon 36,496,116 shares of the Common Stock outstanding as of November 6, 2018 as set forth in the Issuers most recent Form 10-Q for the period ending September 30, 2018, filed with the Securities and Exchange Commission on November 13, 2018.

NAMES OF REPORTING PERSONS

Excel Venture Fund II, L.P.

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

(a)  ☐        (b)  ☒ (1)

SEC USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

Delaware

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

SOLE VOTING POWER

0

SHARED VOTING POWER

1,497,696 (2)

SOLE DISPOSITIVE POWER

0

SHARED DISPOSITIVE POWER

1,497,696 (2)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

1,497,696 (2)

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

☐

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

4.10% (3)

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

PN

This statement on Schedule 13G is filed by Excel Ventures II GP, LLC (Excel GP), Excel Venture Fund II, L.P. (Excel), Frederick R. Blume (Blume), Juan Enriquez (Enriquez) and Caleb Winder (Winder and, together with each of the foregoing, the Reporting Persons). The Reporting Persons expressly disclaim status as a group for purposes of this Schedule 13G.

Includes 1,473,559 shares of Common Stock and an immediately exercisable warrant to purchase 24,137 shares held by Excel as of December 31, 2018.

This percentage is calculated based upon 36,496,116 shares of the Common Stock outstanding as of November 6, 2018 as set forth in the Issuers most recent Form 10-Q for the period ending September 30, 2018, filed with the Securities and Exchange Commission on November 13, 2018.

NAMES OF REPORTING PERSONS

Frederick R. Blume

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

(a)  ☐        (b)  ☒ (1)

SEC USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

United States of America

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

SOLE VOTING POWER

0

SHARED VOTING POWER

1,497,696 (2)

SOLE DISPOSITIVE POWER

0

SHARED DISPOSITIVE POWER

1,497,696 (2)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

1,497,696 (2)

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

☐

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

4.10% (3)

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

IN

This statement on Schedule 13G is filed by Excel Ventures II GP, LLC (Excel GP), Excel Venture Fund II, L.P. (Excel), Frederick R. Blume (Blume), Juan Enriquez (Enriquez) and Caleb Winder (Winder and, together with each of the foregoing, the Reporting Persons). The Reporting Persons expressly disclaim status as a group for purposes of this Schedule 13G.

Includes 1,473,559 shares of Common Stock and an immediately exercisable warrant to purchase 24,137 shares held by Excel as of December 31, 2018.

This percentage is calculated based upon 36,496,116 shares of the Common Stock outstanding as of November 6, 2018 as set forth in the Issuers most recent Form 10-Q for the period ending September 30, 2018, filed with the Securities and Exchange Commission on November 13, 2018.

NAMES OF REPORTING PERSONS

Juan Enriquez

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

(a)  ☐        (b)  ☒ (1)

SEC USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

United States of America

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

SOLE VOTING POWER

0

SHARED VOTING POWER

1,497,696 (2)

SOLE DISPOSITIVE POWER

0

SHARED DISPOSITIVE POWER

1,497,696 (2)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

1,497,696 (2)

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

☐

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

4.10% (3)

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

IN

This statement on Schedule 13G is filed by Excel Ventures II GP, LLC (Excel GP), Excel Venture Fund II, L.P. (Excel), Frederick R. Blume (Blume), Juan Enriquez (Enriquez) and Caleb Winder (Winder and, together with each of the foregoing, the Reporting Persons). The Reporting Persons expressly disclaim status as a group for purposes of this Schedule 13G.

Includes 1,473,559 shares of Common Stock and an immediately exercisable warrant to purchase 24,137 shares held by Excel as of December 31, 2018.

This percentage is calculated based upon 36,496,116 shares of the Common Stock outstanding as of November 6, 2018 as set forth in the Issuers most recent Form 10-Q for the period ending September 30, 2018, filed with the Securities and Exchange Commission on November 13, 2018.

NAMES OF REPORTING PERSONS

Caleb Winder

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

(a)  ☐        (b)  ☒ (1)

SEC USE ONLY

CITIZENSHIP OR PLACE OF ORGANIZATION

United States of America

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

EACH

REPORTING

PERSON

WITH

SOLE VOTING POWER

0

SHARED VOTING POWER

1,497,696 (2)

SOLE DISPOSITIVE POWER

0

SHARED DISPOSITIVE POWER

1,497,696 (2)

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

1,497,696 (2)

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

☐

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

4.10% (3)

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)

IN

This statement on Schedule 13G is filed by Excel Ventures II GP, LLC (Excel GP), Excel Venture Fund II, L.P. (Excel), Frederick R. Blume (Blume), Juan Enriquez (Enriquez) and Caleb Winder (Winder and, together with each of the foregoing, the Reporting Persons). The Reporting Persons expressly disclaim status as a group for purposes of this Schedule 13G.

Includes 1,473,559 shares of Common Stock and an immediately exercisable warrant to purchase 24,137 shares held by Excel as of December 31, 2018.

This percentage is calculated based upon 36,496,116 shares of the Common Stock outstanding as of November 6, 2018 as set forth in the Issuers most recent Form 10-Q for the period ending September 30, 2018, filed with the Securities and Exchange Commission on November 13, 2018.

Name of Issuer:

Molecular Templates, Inc.

Address of issuers principal executive offices:

9301 Amberglen Blvd., Suite 100

Austin, TX 78729

Name of Reporting Persons filing:

Excel Ventures II GP, LLC (Excel GP)

Excel Venture Fund II, L.P. (Excel)

Frederick R. Blume (Blume)

Juan Enriquez (Enriquez)

Caleb Winder (Winder)

Address or principal business office or, if none, residence:

200 Clarendon Street, 17^th floor

Boston, MA 02116

Citizenship:

Name

Citizenship or Place of Organization

Excel GP

Excel

Blume

Enriquez

Winder

Title of class of securities:

Common Stock

CUSIP Number:

885807206

If this statement is filed pursuant to §§ 240.13d-1(b), or 240.13d-2(b) or (c), check whether the person filings is a:

Not applicable.

Ownership

The following information with respect to the ownership of Common Stock of the Issuer by the Reporting Persons filing this statement on Schedule 13G is provided as of December 31, 2018:

Reporting Persons

Excel GP

Excel(2)

Blume

Enriquez

Winder

This percentage is calculated based upon 36,496,116 shares of the Common Stock outstanding as of November 6, 2018 as set forth in the Issuers most recent Form 10-Q for the period ending September 30, 2018, filed with the Securities and Exchange Commission on November 13, 2018.

Excel Venture Fund II, L.P. owns 1,473,559 shares and an immediately exercisable warrant to purchase 24,137 shares.

Ownership of Five Percent or Less of a Class

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following ☒.

Ownership of More than Five Percent on Behalf of Another Person

Not applicable

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person

Not applicable.

Identification and Classification of Members of the Group

Not applicable.

Notice of Dissolution of Group

Not applicable.

Certification

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purposes or effect.