Watt Christopher - 3 filing on 2018-03-20

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^*

Watt Christopher

(Last)

(First)

(Middle)

C/O TETRAPHASE PHARMACEUTICALS, INC.

480 ARSENAL STREET, SUITE 110

(Street)

WATERTOWN

02472

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
03/16/2018

3. Issuer Name and Ticker or Trading Symbol
TETRAPHASE PHARMACEUTICALS INC [ TTPH ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
SVP, Finance

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	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	19,114	D

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)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	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)
Employee Stock Options (Right to Buy)	⁽¹⁾	07/14/2025	Common Stock	50,000	50.49	D
Employee Stock Option (Right to Buy)	⁽²⁾	01/05/2026	Common Stock	25,000	8.47	D
Employee Stock Option (Right to Buy)	⁽³⁾	01/29/2027	Common Stock	60,000	3.69	D
Employee Stock Option (Right to Buy)	⁽⁴⁾	01/16/2028	Common Stock	50,000	6.24	D
Restricted Stock Units	⁽⁵⁾	⁽⁵⁾	Common Stock	12,500	⁽⁶⁾	D
Restricted Stock Units	⁽⁷⁾	⁽⁷⁾	Common Stock	15,000	⁽⁶⁾	D

Explanation of Responses:

1. This option vests over four years. Twenty-five percent (25%)of the shares vested on July 15, 2016 and 6.25% of the shares will vest at the end of each successive three month period thereafter.

2. Vests as to 6.25% of the shares on 4/6/2016 and further vests as to an additional 6.25% of the original grant at the end of each successive three-month period thereafter until 1/6/2020.

3. Vests as to 6.25% of the shares on 4/30/2017 and further vests as to an additional 6.25% of the original grant at the end of each successive three-month period thereafter until 1/31/2021.

4. Vests as to 6.25% of the shares on 4/17/2018 and further vests as to an additional 6.25% of the original grant at the end of each successive three-month period thereafter until 1/17/2022.

5. The restricted stock units vest in three equal installments on each of January 6, 2017, January 6, 2018 and January 6, 2019.

6. Each restricted stock unit represents a contingent right to receive one share of common stock of Tetraphase Pharmaceuticals, Inc. for no consideration.

7. These restricted stock units shall be earned upon achievement of certain performance conditions and, if earned, shall vest on January 31, 2020.

Remarks:

	/s/Maria Stahl as Attorney-in-Fact for Christopher Watt	03/20/2018
	** 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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