Andrew John Hugh MacIntyre Sims - 01 Oct 2026 Form 4 Insider Report for CERENOME, INC. (CNSY)

Reporting relationship: Chief Financial Officer
Issuer ticker: CNSY
Reported as of: 01 Oct 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 01 Oct 2026, 08:00:07 UTC
Prior SEC filing: 01 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Andrew Sims

Filing notes and source

Key filing fact

Andrew John Hugh MacIntyre Sims filed Form 4 for CERENOME, INC. (CNSY) on 01 Oct 2026.

Key facts

This page summarizes Andrew John Hugh MacIntyre Sims's Form 4 filing for CERENOME, INC. (CNSY).
6 reported transactions and 3 derivative rows are listed below.
Accepted by SEC: 01 Oct 2026, 08:00.

Change

Previous filing in this sequence was filed on 01 Jul 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 0001802687 Primary reporting owner

Sims Andrew John Hugh MacIntyre

Relationship: Chief Financial Officer
Address: C/O PLUS THERAPEUTICS INC., 6420 LEVIT GREEN BOULEVARD, SUITE 310, HOUSTON
Signature: /s/ Andrew Sims
Signature date: 01 Oct 2026

Reported non-derivative transactions

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

CNSY transaction

Common Stock

Options Exercise

Transaction value
Shares: +1,533
Change %: +15%
Price: $0.000000^*
Shares after: 11,474
Date: 01 Oct 2026
Ownership: Direct
Footnotes: F1, F2

CNSY transaction

Common Stock

Options Exercise

Transaction value
Shares: +1,165
Change %: +10%
Price: $0.000000^*
Shares after: 12,639
Date: 01 Oct 2026
Ownership: Direct
Footnotes: F1, F3

CNSY transaction

Common Stock

Options Exercise

Transaction value
Shares: +287
Change %: +2.3%
Price: $0.000000^*
Shares after: 12,926
Date: 01 Oct 2026
Ownership: Direct
Footnotes: F1, F4

Reported derivative securities

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

CNSY transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -1,533
Change %: -5.7%
Price: $0.000000^*
Shares after: 25,537
Date: 01 Oct 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,533
Exercise price: $0.000000
Footnotes: F2

CNSY transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -1,165
Change %: -4.6%
Price: $0.000000^*
Shares after: 24,372
Date: 01 Oct 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,165
Exercise price: $0.000000
Footnotes: F3

CNSY transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value
Shares: -287
Change %: -1.2%
Price: $0.000000^*
Shares after: 24,085
Date: 01 Oct 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 287
Exercise price: $0.000000
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

Each Restricted Stock Unit ("RSU") represents a contingent right to receive one share of the issuer's Common Stock.

Footnote F2

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on October 1, 2025.

Footnote F3

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on April 1, 2026.

Footnote F4

Represents the vesting of an RSU grant which occurs in twelve substantially equal quarterly installments beginning on July 1, 2026.