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SCHEDULE 13D/A Filed 2026-06-30 Event 2026-06-26 SEC 0001725721-26-000004 →

AH Bio Fund II, L.P. Nautilus Biotechnology, Inc. NAUT

Stake: Shares: 8,366,966 Class: Common Stock, par value $0.0001 per share

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)
0 transactions
0 buys · 0 sales · 0 awards/exercises
Issuer Cluster
6 13D/G filings on this issuer
5 other filings besides this one
Filer Track Record
2 filings by this filer
1 other filing in the data moat
Short Interest · settle 2026-07-31
DTC 2.72
2,273,103 shares short · +56.9% vs prior

Institutional Consensus · 2025-12-31

Held by elite portfolio managers
1 holder · $119K
Point72 Asset Mgmt

Post-Filing Returns · since 2026-06-26 on NAUT

+1 day
0.0%
+5 days
0.0%
+30 days
-1.8%
+60 days
+90 days
+180 days

Anchor price 1.69 on closest trading day on/after 2026-06-26. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Other 13D/G Filings on Nautilus Biotechnology, Inc.

FiledFormFilerStakeShares
2026-06-04 SCHEDULE 13D/A AH Bio Fund II, L.P. 9.90% 11,682,032 view →
2025-03-05 SCHEDULE Patel Sujal M 15.70% 20,297,732 view →
2025-03-05 SCHEDULE Mallick Parag 17.40% 22,263,911 view →
2025-01-31 SCHEDULE PERCEPTIVE ADVISORS LLC 10.00% 12,594,211 view →
2023-03-01 SC Nautilus Biotechnology, Inc. view →

Other Filings by AH Bio Fund II, L.P.

FiledFormIssuerStakeShares
2026-06-04 SCHEDULE 13D/A Nautilus Biotechnology, Inc. NAUT 9.90% 11,682,032 view →

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