Fundraising Fox

PIPr Therapeutics

Durham, US · Founded 2016 · Delaware corporation · 1 known investors

Biotech

Founders & leadership

HMHeather Madsen
Heather MadsenMs. Madsen is a director and the CEO of the issuer.Operating Partner at Hatteras Venture Partners
WW
William WieslerExecutive

Board

CTClay Thorp
Clay ThorpinBoard directorGeneral Partner at Hatteras Venture Partners
HT
Holden ThorpinBoard directorVenture Partner at Hatteras Venture Partners

Investors · 1

Hatteras Venture PartnersreportedResearch Triangle · $500K – $4Mvia Christy Shaffer · board

Reported raises · per SEC filings

Form D private placements

$30.1M disclosed across 5 rounds · 2016–2025

▶$1.5MraisedNov 2025 · 3 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • Clay ThorpDirector
  • Holden ThorpDirector
  • Heather MadsenExecutive Officer, Director
Offering amount
$2.5M
Amount sold
$1.5M
First sale
Oct 2025
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$18.9MraisedJun 2022 · 7 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • Bridget Ann MartellExecutive Officer, Director
  • Holden ThorpDirector
  • Christy ShafferDirector
  • E. Jonathan SoderstromDirector
  • St. John Donnie McGrathDirector
Offering amount
$18.9M
Amount sold
$18.9M
First sale
Dec 2020
Incorporated
Corporation, Delaware
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$1.7MraisedMar 2020 · 4 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • James H. RosenExecutive Officer, Director
  • Holden ThorpDirector
  • Jonathan SoderstromDirector
  • Christy ShafferDirector
  • Moncef SlaouiDirector
  • Marian NakadaDirector
Offering amount
$2M
Amount sold
$1.7M
First sale
Feb 2020
Incorporated
Corporation, Delaware, 2016
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$5MraisedMar 2019 · 6 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • Marian NakadaDirector
  • James H. RosenExecutive Officer, Director
  • Holden ThorpDirector
  • Christy ShafferDirector
  • Moncef SlaouiDirector
  • Jonathan SoderstromDirector
Offering amount
$5M
Amount sold
$5M
First sale
Mar 2019
Incorporated
Corporation, Delaware, 2016
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$3MraisedOct 2016 · 5 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • William WieslerExecutive Officer, Director
Offering amount
$5M
Amount sold
$3M
First sale
Sep 2016
Incorporated
Corporation, Delaware, 2016
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 PIPr Therapeutics's investors?
PIPr Therapeutics's investors include Hatteras Venture Partners.
How much funding has PIPr Therapeutics raised?
PIPr Therapeutics has disclosed $30.1M raised across 5 rounds.
Where is PIPr Therapeutics headquartered?
PIPr Therapeutics is headquartered in Durham, US.