Fundraising Fox

FLX Bio

South San Francisco, US · Founded 2015 · Delaware corporation · 2 known investors

Biotech

Founders & leadership

RH
Rekha HemrajaniExecutive
BW
Brian WongNamed on SEC filing

Board

BSBeth Seidenberg
Beth Seidenbergin𝕏Board directorFounding Managing Director at Westlake Village BioPartners
DG
David GoeddelBoard director
WJ
William J. RieflinBoard director
LK
Linda KozickBoard director

Investors · 2

Kleiner PerkinsreportedMenlo Park · $500K – $15Mvia Beth Seidenberg · board
The Column GroupreportedSan Francisco · $30Mvia David Goeddel · board

Reported raises · per SEC filings

Form D private placements

$317M disclosed across 5 rounds · 2016–2024

▶$150MraisedJan 2025 · 20 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • Rodney YoungExecutive Officer
  • Lori Lyons-WilliamsDirector
  • Wendye RobbinsDirector
  • Dirk BrockstedtExecutive Officer
  • Linda KozickDirector
  • William HoExecutive Officer
  • Brian WongExecutive Officer, Director
  • William J. RieflinDirector
  • Michael GiordanoDirector
  • Mary Ann V. GrayDirector
Offering amount
$150M
Amount sold
$150M
Sales commissions
$6.5M
Placement agents
Leerink Partners LLC
First sale
Dec 2024
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$50MraisedJun 2022 · 1 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • Rodney YoungExecutive Officer
  • Mary Ann V. GrayDirector
  • Dirk BrockstedtExecutive Officer
  • Linda KozickDirector
  • Lori Lyons-WilliamsDirector
  • Michael F. GiordanoDirector
  • Brian WongExecutive Officer, Director
  • Wendye RobbinsDirector
  • William J. RieflinDirector
  • William HoExecutive Officer
Offering amount
$50M
Amount sold
$50M
First sale
May 2022
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$37.1MraisedJun 2019 · 24 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • David WustrowExecutive Officer
  • Paul KassnerExecutive Officer
  • Dirk BrockstedtExecutive Officer
  • William HoExecutive Officer
  • Eric HallExecutive Officer
  • Michael F. GiordanoDirector
  • Linda KozickDirector
  • David V. GoeddelDirector
  • Beth SeidenbergDirector
  • William J. RieflinDirector
  • Brian WongExecutive Officer, Director
Offering amount
$67.1M
Amount sold
$37.1M
First sale
Dec 2018
Incorporated
Corporation, Delaware, 2015
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$29.9MraisedJan 2018 · 10 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • Brian WongExecutive Officer, Director
  • Beth SeidenbergDirector
  • Rekha HemrajaniExecutive Officer
  • William J. RieflinDirector
  • Linda KozickDirector
  • David GoeddelDirector
Offering amount
$59.9M
Amount sold
$29.9M
First sale
Dec 2017
Incorporated
Corporation, Delaware, 2015
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$50MraisedMay 2016 · 9 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • Beth SeidenbergDirector
  • Rekha HemrajaniExecutive Officer
  • David GoeddelDirector
  • Tim LinExecutive Officer
  • William J. RieflinDirector
  • Brian WongExecutive Officer, Director
Offering amount
$50M
Amount sold
$50M
First sale
Apr 2016
Incorporated
Corporation, Delaware, 2015
Federal exemptions
06b
Full filing on SEC EDGAR ↗

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.

Frequently asked questions

Who are FLX Bio's investors?
FLX Bio's investors include Kleiner Perkins, The Column Group.
How much funding has FLX Bio raised?
FLX Bio has disclosed $317M raised across 5 rounds.
Where is FLX Bio headquartered?
FLX Bio is headquartered in South San Francisco, US.