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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1429386	Phaserx Inc.	PZRX	()	4

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1219039	Keith Crandell	8755 W. Higgins Road, Suite 1025 Chicago IL 60631	No	No	Yes	No
1219042	Robert Nelsen	8755 W. Higgins Road, Suite 1025 Chicago IL 60631	No	No	Yes	No
1219043	Clinton Bybee	8755 W. Higgins Road, Suite 1025 Chicago IL 60631	No	No	Yes	No
1229592	Steven Gillis	8755 W. Higgins Road, Suite 1025 Chicago IL 60631	Yes	No	Yes	No
1402439	Arch Venture Fund Vii Lp	8755 W. Higgins Road, Suite 1025 Chicago IL 60631	No	No	Yes	No
1544443	Arch Venture Partners Vii, Llc	8755 W. Higgins Road, Suite 1025 Chicago IL 60631	No	No	Yes	No
1544444	Arch Venture Partners Vii, L.p.	8755 W. Higgins Road, Suite 1025 Chicago IL 60631	No	No	Yes	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	2016-05-23	484,903	$0.01	2,049,378	No	4	S	Indirect	By ARCH Venture Fund VII, L.P.
Common Stock	Disposition	2016-05-23	195,156	$0.01	1,854,222	No	4	S	Indirect	By ARCH Venture Fund VII, L.P.
Common Stock	Acquisiton	2016-05-23	1,000,000	$5.00	2,854,222	No	4	P	Indirect	By ARCH Venture Fund VII, L.P.

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	By ARCH Venture Fund VII, L.P.
No	4	S	Indirect	By ARCH Venture Fund VII, L.P.
No	4	P	Indirect	By ARCH Venture Fund VII, L.P.

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Stock Option(right to buy)	Acquisiton	2016-05-23	9,385	$0.00	9,385	$1.81

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
9,385		2026-02-08	No	4	A	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	10,048	Direct

Footnotes

Common stock held of record by ARCH Venture Fund VII, L.P. ("ARCH VII"). The sole general partner of ARCH VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to have shared voting and investment power over the shares held by ARCH VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to have shared voting and investment power over the shares held by ARCH VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.
The managing directors of ARCH VII LLC are Keith Crandell, Clinton Bybee and Robert Nelsen and they may be deemed to have shared voting and investment power over the shares held by ARCH VII. Dr. Steve Gillis owns an interest in ARCH Partners VII, but does not have dispositive or voting power. Messrs. Crandell, Bybee and Nelsen and Dr. Gillis disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.
On February 8, 2016, the reporting person was granted an option to purchase shares of common stock. The option vests in 48 equal monthly installments commencing on June 23, 2016, which is one month from the date of the consummation of the Issuer's initial public offering, and subject to the reporting person's continued service to the Issuer.