Nautilus Biotechnology, Inc. (NAUT)
Nasdaq: NAUT · Laboratory Analytical Instruments · Seattle, WA · filing with the SEC since 2020
Who owns Nautilus Biotechnology, Inc.
As filed with the SECHolders of 5% or more
3
Parag Mallick holds 17.6% of Common stock, par value $0.0001 per share, as its SCHEDULE 13D/A filed Mar 4, 2026 says.
Directors and officers
12
report now, of 24 people on the record since 2020. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 3 named at left.
Holders of 5% or moreshare of the class, as filed
Parag Mallick
SCHEDULE 13D/A · filed Mar 4, 2026 · Common stock, par value $0.0001 per share · 17.4% in Mar 5, 2025
Sujal Patel
SCHEDULE 13D/A · filed Mar 4, 2026 · Common stock, par value $0.0001 per share · 15.7% in Mar 5, 2025
Perceptive Advisors LLC
SCHEDULE 13D/A · filed Aug 14, 2026 · Common Stock, par value $0.0001 per share · 10.1% in Jun 24, 2025
Marc L. Andreessen
SCHEDULE 13D/A · filed Sep 11, 2026 · Common Stock, par value $0.0001 per share · reported falling below 5%, from 6% in Aug 28, 2026
What NAUT reports owning in othersstakes of 5% or more, and other ties
Nautilus Biotechnology, Inc. reports no stake in another company in the record.
Insider tradesForm 4
0sales
2purchases
0sales on a scheduled plan
0people selling
$0sold, in dollars
$100,000bought, in dollars
Open-market trades on Form 4 from Sep 30, 2025 to Sep 30, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Sep 30, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window3 of 34 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Ah Bio Fund II, L.P. | 10% owner | 2 | $11.8M | 0 | 0 | $0 |
| Patel Sujal M | CEO, President, and Secretary | 0 | $0 | 0 | 1 | $100,000 |
| Suzuki Kentaro | Chief Marketing Officer | 0 | $0 | 0 | 1 | $0 |