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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1373707	Tetraphase Pharmaceuticals Inc	TTPH	()	4

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1296998	Guy Macdonald	480 Arsenal St. Suite 110 Watertown MA 02472		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2019-12-05	1,870	$2.34	5,985	No	4	S	Direct
Common Stock	Disposition	2019-12-06	5,735	$2.25	250	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct
No	4	S	Direct

Footnotes

The number of shares of common stock reported on this Form 4 reflects a 1-for -20 reverse stock split effected on September 26, 2019.
The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $2.34 to $2.35 per share. The reporting person herby undertakes, upon request of the staff of the U.S. Securities and Exchange Commission,the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $2.25 to $2.29 per share. The reporting person herby undertakes, upon request of the staff of the U.S. Securities and Exchange Commission,the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.