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8755 W. Higgins Avenue, Suite 1025, Chicago, IL 60631.

 

 

 

 

Not Applicable.

 

(a)

Amount beneficially owned:

 

(b)

Percent of class:

CUSIP No.   38341P102

13G

Page 11 of 17 Pages

 

 

 

 

(c)

Number of shares as to which such person has:

 

(i)    Sole power to vote or to direct the vote:

(ii)   Shared power to vote or to direct the vote:

(iii)  Sole power to dispose or to direct the disposition:

(iv)  Shared power to dispose or to direct the disposition:

Each Reporting Person disclaims beneficial ownership of such shares of Common Stock except for the shares, if any, such Reporting Person holds of record.

Not Applicable.

 

Not Applicable.

 

Item 10.

Certification

 

 

	By:                    *
	Keith Crandell
	Managing Director

 

* This Schedule 13G was executed by Mark McDonnell pursuant to Powers of Attorney attached hereto as Exhibit 2 and incorporated herein by reference.

Pursuant to Rule 13d-1-(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required by Schedule 13G need be filed with respect to the ownership by each of the undersigned of shares of stock of Gossamer Bio, Inc.

This Agreement may be executed in any number of counterparts, each of which shall be deemed an original.

Dated:    February 13, 2020

 

	By:   ARCH Venture Partners IX, LLC
	its General Partner

	By:                   *
	Keith Crandell
	Managing Director

CUSIP No.   38341P102

13G

Page 15 of 17 Pages

 

 

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Mark McDonnell his or its true and lawful attorney-in-fact, with full power of substitution, to sign any and all instruments, certificates and documents that may be necessary, desirable or appropriate to be executed on behalf of himself as an individual or in his capacity as a direct or indirect general partner, member, director, officer or manager of any partnership, corporation or limited liability company, pursuant to section 13 or 16 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and any and all regulations promulgated thereunder, and to file the same, with all exhibits thereto, and any other documents in connection therewith, with the Securities and Exchange Commission, and with any other entity when and if such is mandated by the Exchange Act or by the Financial Industry Regulatory Authority, granting unto said attorney-in-fact full power and authority to do and perform each and every act and thing necessary, desirable or appropriate, fully to all intents and purposes as he might or could do in person, thereby ratifying and confirming all that said attorney-in-fact, or his substitutes, may lawfully do or cause to be done by virtue hereof.  This Power of Attorney shall remain in full force and effect with respect to each undersigned person unless and until six months after such person is both no longer a Managing Director of ARCH Venture Partners and no longer serving on the board of directors of any portfolio company of any ARCH Venture Partners fund.

IN WITNESS WHEREOF, this Power of Attorney has been signed as of the 29^th day of January, 2019.

 

 

 

 

	ARCH VENTURE PARTNERS IX, L.P.
	By:   ARCH Venture Partners IX, LLC
	its General Partner