Terrance McGuire - 28 Jul 2026 Form 4 Insider Report for Seer, Inc. (SEER)

Reporting relationship: Director
Issuer ticker: SEER
Reported as of: 28 Jul 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 30 Jul 2026, 16:13:48 UTC
Prior SEC filing: 21 May 2026
Source filing: View source filing
Reporting owner signature: /s/ David Horn, by power of attorney

Key filing fact

Terrance McGuire filed Form 4 for Seer, Inc. (SEER) on 30 Jul 2026.

Key facts

This page summarizes Terrance McGuire's Form 4 filing for Seer, Inc. (SEER).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 30 Jul 2026, 16:13.

Change

Previous filing in this sequence was filed on 21 May 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 0001117003 Primary reporting owner

MCGUIRE TERRANCE

Relationship: Director
Address: C/O SEER, INC., 3800 BRIDGE PARKWAY, REDWOOD CITY
Signature: /s/ David Horn, by power of attorney
Signature date: 30 Jul 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SEER transaction

Class A Common Stock

Award

Transaction value
Shares: +16,500
Change %: +15%
Price: $0.000000^*
Shares after: 128,566
Date: 28 Jul 2026
Ownership: Direct
Footnotes: F1

SEER holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 215,070
Date: 28 Jul 2026
Ownership: See footnote
Footnotes: F2

SEER holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 78,947
Date: 28 Jul 2026
Ownership: See footnote
Footnotes: F3

Reported derivative securities

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

SEER transaction Derivative

Stock Option (right to buy)

Award

Transaction value
Shares: +25,000
Change %
Price: $0.000000^*
Shares after: 25,000
Date: 28 Jul 2026
Ownership: Direct
Underlying class: Class A Common Stock
Underlying amount: 25,000
Exercise price: $2.14
Footnotes: F4

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

The reported shares are represented by restricted stock units, or RSUs, which vest on the earlier of (i) July 28, 2027 or (ii) the day prior to the date of the Issuer's next annual meeting of stockholders.

Footnote F2

The reported shares are held of record by Strong Bridge, LLC for which the Reporting Person serves as an operating manager.

Footnote F3

The reported shares are held of record by Polaris Founders Capital Fund I, L.P. ("PFCF I"). Polaris Founders Capital Management Co. I, L.L.C. ("PFCM"), is the general partner of PFCF I. The Reporting Person and Jonathan A. Flint ("Flint") are the managing members of PFCM. Each of the Reporting Person and Flint in their respective capacities with respect to PFCM may be deemed to have shared voting and dispositive power with respect to the shares held by PFCF I. Each of PFCM, Flint, and the Reporting Person disclaims beneficial ownership of securities held by PFCF I, and this report shall not be deemed an admission that the Reporting Person, Flint, or PFCM is the beneficial owner of these securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interests therein.

Footnote F4

Shares subject to the option vest on the earlier of (i) July 28, 2027 or (ii) the day prior to the date of the Issuer's next annual meeting of stockholders.