Company Analysis

Nautilus Biotechnology, Inc. (NAUT)

Nasdaq: NAUT · Laboratory Analytical Instruments · Seattle, WA · filing with the SEC since 2020
Grade5.4
◀ Past 4.6● Present 6.1▶ Future 5.1
6 est.

Filings

176 filings since 2017 beside 152 insider forms · Non-accelerated filer and smaller reporting company · read from EDGAR on Nov 13, 2026
Due nextNon-accelerated filer and smaller reporting company
10-K Annual report for the fiscal year ending Dec 31, 2026Non-accelerated filers and smaller reporting companies have 90 days after the fiscal year ends. by Mar 31, 2027
10-Q Quarterly report for the quarter ending Mar 31, 2027Non-accelerated filers and smaller reporting companies have 45 days after the quarter ends; quarter ends are taken to the month end. by May 15, 2027

A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files. Last time, the results release (8-K item 2.02) came 27 days after the quarter ended. The proxy statement was last filed Apr 28, 2026.

Filings a yearinsider forms included
28785734533939
2020202120222023202420252026

2026 counts to Nov 13, 2026.

Listing warning from its exchange (8-K item 3.01): 1 time in the last 36 months, the newest May 2, 2025.Officer or director change (8-K item 5.02): 2 times in the last 36 months, the newest Feb 27, 2025.SEC letters: 2 in the last 36 months, the newest Mar 4, 2024.
Insider forms 152

Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.

FiledFormWhat it is, in plain wordsPeriodAsk
Nov 3, 2026 SCHEDULE 13D/A Activist holder update, amended
Oct 27, 2026 10-Q Quarterly report Sep 30, 2026
Oct 27, 2026 8-K items 2.02, 9.01 Results released · Current report
Sep 18, 2026 EFFECT Registration effective
Sep 18, 2026 424B5 Shelf offering
Sep 11, 2026 8-K items 1.01, 1.02, 9.01 Major agreement signed; Major agreement ended · Current report
Sep 11, 2026 S-3 Shelf registration
Sep 11, 2026 SCHEDULE 13D/A Activist holder update, amended
Aug 28, 2026 SCHEDULE 13D/A Activist holder update, amended
Aug 14, 2026 SCHEDULE 13D/A Activist holder update, amended
Jul 28, 2026 10-Q Quarterly report Jun 30, 2026
Jul 28, 2026 8-K items 2.02, 9.01 Results released · Current report
Jun 30, 2026 SCHEDULE 13D/A Activist holder update, amended
Jun 18, 2026 8-K item 5.07 Shareholder vote · Current report Jun 17, 2026
Jun 4, 2026 SCHEDULE 13D/A Activist holder update, amended
Apr 28, 2026 ARS Annual report to shareholders Dec 31, 2025
Apr 28, 2026 DEFA14A Extra proxy material
Apr 28, 2026 DEF 14A Proxy statement Jun 17, 2026
Apr 28, 2026 10-Q Quarterly report Mar 31, 2026
Apr 28, 2026 8-K items 2.02, 9.01 Results released · Current report
Mar 4, 2026 SCHEDULE 13D/A Activist holder update, amended
Mar 4, 2026 SCHEDULE 13D/A Activist holder update, amended
Feb 26, 2026 S-8 Employee stock plan registration
Feb 26, 2026 10-K Annual report Dec 31, 2025
Feb 26, 2026 8-K items 2.02, 9.01 Results released · Current report
Nov 4, 2025 8-K item 8.01 Other event · Current report Nov 3, 2025
Oct 28, 2025 10-Q Quarterly report Sep 30, 2025
Oct 28, 2025 8-K items 2.02, 9.01 Results released · Current report
Jul 31, 2025 10-Q Quarterly report Jun 30, 2025
Jul 31, 2025 8-K items 2.02, 9.01 Results released · Current report
Jun 24, 2025 SCHEDULE 13D/A Activist holder update, amended
Jun 23, 2025 8-K item 5.07 Shareholder vote · Current report Jun 20, 2025
May 2, 2025 8-K item 3.01 Listing warning from its exchange · Current report May 1, 2025
Apr 29, 2025 ARS Annual report to shareholders Dec 31, 2024
Apr 29, 2025 DEFA14A Extra proxy material
Apr 29, 2025 DEF 14A Proxy statement Dec 31, 2024
Apr 29, 2025 10-Q Quarterly report Mar 31, 2025
Apr 29, 2025 8-K items 2.02, 9.01 Results released · Current report
Mar 5, 2025 SCHEDULE 13D/A Activist holder update, amended
Mar 5, 2025 SCHEDULE 13D/A Activist holder update, amended
40 of 176 shown

Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.

SI Assistanton NAUT · research, not advice