SEC Form 4 · accession 0001209191-19-009410

Gossamer Bio, Inc. · GOSS

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Officer — Executive Chairman · Director

Period of report

Feb 12, 2019

Accepted (ET)

Feb 12, 2019 · 5:25 pm EST

Rule 10b5-1 plan

unknown — predates the checkbox

Issuer CIK

0001728117

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1,F2	Feb 12, 2019	C	58,599	—	A	3,372,109	I	By family trust

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Series A Preferred Stock^F1	—	Feb 12, 2019	C	185,984	D	—	—	Common Stock	41,329	0	I
Series B Preferred Stock^F1	—	Feb 12, 2019	C	77,719	D	—	—	Common Stock	17,270	0	I

F1The shares of the Issuer's Series A Preferred Stock and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 4.5 to one share, immediately prior to the consummation of the Issuer's initial public offering. The Series A Preferred Stock and Series B Preferred Stock had no expiration date.
F2Includes 2,595,584 shares subject to forfeiture, which shares will vest in equal monthly installments as set forth in the restricted stock agreements between the Issuer and Reporting Person so that all of the shares will be released from the forfeiture restriction on January 4, 2023, subject to the Reporting Person's continuous service to the Issuer on each such vesting date. The shares are also subject to certain accelerated vesting provisions as set forth in more detail in the employment agreement between the Issuer and the Reporting Person.