RA CAPITAL MANAGEMENT, L.P. - 09 Feb 2026 SCHEDULE 13D Report for SPYGLASS PHARMA, INC. Common Stock, $0.00001 par value per share

Filing Manager
RA CAPITAL MANAGEMENT, L.P.
Reporting Manager
RA Capital Management, L.P.
Security
SPYGLASS PHARMA, INC. Common Stock, $0.00001 par value per share
Shares outstanding
33,288,959 shares
Disclosed Ownership
8,022,639 shares
Ownership
24%
Form type
SCHEDULE 13D
Filing time
17 Feb 2026, 19:21:40 UTC
Date of event
09 Feb 2026
SEC
View on sec.gov

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Quoteable Key Fact

"RA CAPITAL MANAGEMENT, L.P. disclosed 24% ownership in SPYGLASS PHARMA, INC. Common Stock, $0.00001 par value per share on 09 Feb 2026."

Quick Takeaways

  • RA CAPITAL MANAGEMENT, L.P. filed SCHEDULE 13D for SPYGLASS PHARMA, INC. Common Stock, $0.00001 par value per share.
  • Disclosed ownership: 24%.
  • Date of event: 09 Feb 2026.

What Changed

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 17 Feb 2026, 19:21.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Official SEC Source

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (5)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
RA Capital Management, L.P. 24% 8,022,639 0 8,022,639 /s/ Peter Kolchinsky By Peter Kolchinsky, Authorized Signatory 0001346824
Peter Kolchinsky 24% 8,022,639 0 8,022,639 /s/ Peter Kolchinsky Peter Kolchinsky 0001384859
Rajeev Shah 24% 8,022,639 0 8,022,639 /s/ Rajeev Shah Rajeev Shah 0001619841
RA Capital Healthcare Fund, L.P. 18% 5,966,439 0 5,966,439 /s/ Peter Kolchinsky By RA Capital Healthcare Fund GP, LLC, its General Partner, By Peter Kolchinsky, Manager 0001315082
RA Capital Nexus Fund III, L.P. 6.2% 2,054,678 0 2,054,678 /s/ Peter Kolchinsky By RA Capital Nexus Fund III GP, LLC, its General Partner, By Peter Kolchinsky, Manager 0001883840

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