Melissa B. Epperly - 18 Jun 2026 Form 4 Insider Report for Nautilus Biotechnology, Inc. (NAUT)

Reporting relationship: Director
Issuer ticker: NAUT
Reported as of: 18 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 22 Jun 2026, 16:13:47 UTC
Prior SEC filing: 21 Apr 2026
Next SEC filing: 01 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Matthew B. Murphy, as Attorney-in-Fact

Key filing fact

Melissa B. Epperly filed Form 4 for Nautilus Biotechnology, Inc. (NAUT) on 22 Jun 2026.

Key facts

This page summarizes Melissa B. Epperly's Form 4 filing for Nautilus Biotechnology, Inc. (NAUT).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 22 Jun 2026, 16:13.

Change

Previous filing in this sequence was filed on 21 Apr 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001807359 Primary reporting owner

Epperly Melissa B,

Relationship: Director
Address: C/O NAUTILUS BIOTECHNOLOGY, INC., 2701 EASTLAKE AVE. E., SEATTLE
Signature: /s/ Matthew B. Murphy, as Attorney-in-Fact
Signature date: 22 Jun 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

NAUT transaction Derivative

Stock Option (Right to Buy)

Award

Transaction value
Shares: +45,000
Change %
Price: $0.000000^*
Shares after: 45,000
Date: 18 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 45,000
Exercise price: $2.28
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

Subject to reporting person's continuous status as a "Service Provider" (as defined in the the Issuer's 2021 Equity Incentive Plan) through each applicable vesting date, one-twelfth (1/12th) of the shares subject to the Option shall vest on a monthly basis following the date of grant on the same day of the month as such grant date (or on the last day of the month, if there is no corresponding day in such month).