Company · Ownership research

Nautilus Biotechnology, Inc. NAUT

CIK 0001808805

Form 4 transactions dated Oct 1, 2023 to Oct 15, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

Insider filings on file run through Jun 22, 2026.

Insider purchases & sales

Purchased: $458.45K
Sold: $11.98M

Oct 1, 2023 – Jun 22, 2026
Available records · partial months are marked ·

20259 of 9 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Nov 6, 2025	Suzuki Kentaro Chief Marketing Officer	Purchase	$5.96K 4,000 shares bought	New holding Direct holding	▾
Sep 8, 2025	Patel Sujal M CEO, President, and Secretary · Director · 10% owner	Purchase	$57.03K 83,500 shares bought	0.81% added Direct holding	▾
Sep 5, 2025	Patel Sujal M CEO, President, and Secretary · Director · 10% owner	Purchase	$78.54K 116,500 shares bought	1.15% added Direct holding	▾
Sep 4, 2025	Murphy Matthew B. General Counsel	Purchase	$12.86K 20,000 shares bought	36.94% added Indirect holding	▾
May 29, 2025	Mowry Anna CFO and Treasurer	Purchase	$11.49K 15,000 shares bought	22.06% added Direct holding	▾
May 12, 2025	Mallick Parag Chief Scientist · Director · 10% owner	Purchase	$1.10K 1,500 shares bought	0.01% added Direct holding	▾
May 8, 2025	Mallick Parag Chief Scientist · Director · 10% owner	Purchase	$8.79K 12,000 shares bought	0.06% added Direct holding	▾
Mar 20, 2025	Patel Sujal M CEO, President, and Secretary · Director · 10% owner	Purchase	$23.89K 23,933 shares bought	0.24% added Direct holding	▾
Mar 19, 2025	Patel Sujal M CEO, President, and Secretary · Director · 10% owner	Purchase	$53.03K 53,300 shares bought	0.53% added Direct holding	▾

Showing 9 / 9 record groups in 2025. The complete set is available through the API.

Nautilus Biotechnology, Inc. · NAUT

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 9 of 9 purchase / sale groups and 13 of 13 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"NAUT","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.