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Ansun Biopharma

San Diego, US · California corporation · 2 known investors

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Ansun develops novel therapeutic treatments targeting viral diseases, particularly respiratory infections, through its proprietary sialic acid biology platform. The company focuses on unmet medical needs in immunocompromised and underserved patient populations.

Founders & leadership

RMRONALD MOSS
RONALD MOSSChief Medical OfficerRonald Moss holds an MD from Chicago Medical School and completed a pediatric residency and clinical fellowship at the National Institute of Allergy and Infectious Disease (NIAID). He brings extensive experience as CEO and CMO at biotech companies, with expertise spanning clinical development and regulatory strategy across infectious disease, vaccines, and immunology, including leading multiple Phase 1–3 trials and securing FDA approvals for therapeutics and vaccines.
MAMARK ATTEBURY
MARK ATTEBURYVP, Finance2014–2017
MH
MIKAEL HAVLUCIYANExecutive

Board

MC
MICHAEL CHANGBoard director
NC
Nancy ChangChairperson of the Board
AC
Allen ChaoBoard director

Investors · 2

Reported raises · per SEC filings

Form D private placements

$180.2M disclosed across 5 rounds · 2014–2019

▶$100MraisedNov 2020 · 19 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • DAVE CHENNDirector
  • KAREN LIUDirector
  • AIMIN WUDirector
  • YI SHIDirector
  • DONALD PAYNEDirector
  • MICHAEL CHAODirector
  • Yining ZhaoExecutive Officer
  • MICHAEL CHANGDirector
  • ALLEN CHAODirector
  • NANCY CHANGExecutive Officer, Director
Offering amount
$100M
Amount sold
$100M
Sales commissions
$960K
Placement agents
China Renaissance Securities (US) Inc.
First sale
Jul 2019
Incorporated
Corporation, California
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$67.1MraisedAug 2019 · 29 investors · Other
Rule 506(b)
Officers, directors & promoters on the filing
  • Shi YiDirector
  • Donald PayneDirector
  • Michael ChaoDirector
  • Mikael HavluciyanExecutive Officer
  • Allen ChaoDirector
  • Nancy ChangExecutive Officer, Director
  • Aimin WuDirector
  • Michael ChangDirector
Offering amount
$67.1M
Amount sold
$67.1M
First sale
Apr 2018
Incorporated
Corporation, California
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$1.6MraisedMar 2018 · 6 investors · Other
Rule 506(b)
Officers, directors & promoters on the filing
  • Nancy ChangExecutive Officer, Director
  • Michael HavluciyanExecutive Officer
  • Michael ChangDirector
  • Allen ChaoDirector
Offering amount
$1.6M
Amount sold
$1.6M
First sale
Feb 2017
Incorporated
Corporation, California
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$4MraisedDec 2015 · 6 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • RONALD MOSSExecutive Officer
  • ALLEN CHAODirector
  • MICHAEL CHANGDirector
  • MARK ATTEBURYExecutive Officer
  • MIKAEL HAVLUCIYANExecutive Officer
  • NANCY CHANGDirector
Offering amount
$10M
Amount sold
$4M
Proceeds to insiders
$700K
First sale
Nov 2015
Incorporated
Corporation, California
Federal exemptions
06b
Full filing on SEC EDGAR ↗
▶$7.5MraisedMay 2014 · 7 investors · Biotechnology
Rule 506(b)
Officers, directors & promoters on the filing
  • RONALD MOSSExecutive Officer
  • NANCY CHANGDirector
  • ALLEN CHAODirector
  • NANCY CHANGDirector
  • MIKAEL HAVLUCIYANExecutive Officer
Offering amount
$17.9M
Amount sold
$7.5M
First sale
May 2014
Incorporated
Corporation, California
Federal exemptions
06b
Full filing on SEC EDGAR ↗

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

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Frequently asked questions

What does Ansun Biopharma do?
Ansun develops novel therapeutic treatments targeting viral diseases, particularly respiratory infections, through its proprietary sialic acid biology platform. The company focuses on unmet medical needs in immunocompromised and underserved patient populations.
Who are Ansun Biopharma's investors?
Ansun Biopharma's investors include LAV, Lilly Asia Ventures.
How much funding has Ansun Biopharma raised?
Ansun Biopharma has disclosed $180.2M raised across 5 rounds.
Where is Ansun Biopharma headquartered?
Ansun Biopharma is headquartered in San Diego, US.