About Spyre Therapeutics, Inc. 
Spyre Therapeutics, Inc.
Pharmaceuticals & Biotechnology
Aeglea BioTherapeutics, Inc. is a clinical-stage biotechnology company. The Company is focused on developing a human enzyme therapeutics as advanced solutions for rare and other high-burden diseases. The Company’s product candidates are Pegzilarginase, ACN00177 and AEB5100. Its Pegzilarginase is a recombinant human Arginase one that enzymatically degrades the amino acid arginine to lower arginine levels in patients with Arginase One Deficiency. Its engineered pegzilarginase with modifications that enhance the stability and arginine-degrading activity of the enzyme in human plasma. The Company is evaluating Pegzilarginase in a global pivotal Phase III PEACE (Pegzilarginase Effect on Arginase one Deficiency Clinical Endpoints) trial and in a Phase II open-label extension study for patients with Arginase One Deficiency. Its ACN00177 is a PEGylated or polyethylene glycol modified, human enzyme engineered to degrade free homocysteine and homocystine in patients with Homocystinuria.
Company Coordinates 
Company Details
805 Las Cimas Parkway, Suite 100 , AUSTIN TX : 78746
Registrar Details
Shareholding Snapshot
Shareholding Compare (%holding) 
Majority shareholders
Domestic Funds
Domestic Funds
Held in 40 Schemes (34.91%)
Foreign Institutions
Held by 69 Foreign Institutions (9.87%)
Strategic Entities with highest holding
Highest Public shareholder
Management
Designation
Mr. Russell Cox
Independent Chairman of the board
Dr. Anthony Quinn
President and Chief Executive Officer, Director
Ms. Alison Lawton
Director
Dr. Suzanne Bruhn
Independent Director
Dr. V. Bryan Lawlis
Independent Director
Dr. Ivana Magovcevic-Liebisch
Independent Director
Mr. Sandesh Mahatme
Independent Director
Revenue and Profits:
Net Sales:
(Quarterly Results - Jun 2025)
Net Profit:
-37 Million
Pharmaceuticals & Biotechnology
USD 1,004 Million ()
NA (Loss Making)
NA
0.00%
-1.16
-37.74%
2.20






