Marc Rubin - 20 Mar 2026 Form 4 Insider Report for CURIS INC (CRIS)

Reporting relationship: Director
Issuer ticker: CRIS
Reported as of: 20 Mar 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 23 Mar 2026, 16:02:31 UTC
Prior SEC filing: 18 Mar 2026
Next SEC filing: 09 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Diantha Duvall, Attorney-in-fact

Key filing fact

Marc Rubin filed Form 4 for CURIS INC (CRIS) on 23 Mar 2026.

Key facts

This page summarizes Marc Rubin's Form 4 filing for CURIS INC (CRIS).
2 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 23 Mar 2026, 16:02.

Change

Previous filing in this sequence was filed on 18 Mar 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 0001412377 Primary reporting owner

Rubin Marc

Relationship: Director
Address: 128 SPRING STREET, BUILDING C - SUITE 500, LEXINGTON
Signature: /s/ Diantha Duvall, Attorney-in-fact
Signature date: 23 Mar 2026

Reported non-derivative transactions

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

CRIS transaction

Common Stock

Conversion of derivative security

Transaction value
Shares: +26,667
Change %: +1851%
Price
Shares after: 28,108
Date: 20 Mar 2026
Ownership: Direct
Footnotes: F1

Reported derivative securities

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

CRIS transaction Derivative

Series B Convertible Preferred Stock

Conversion of derivative security

Transaction value
Shares: -20
Change %: -100%
Price
Shares after: 0
Date: 20 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 26,667
Exercise price
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

Each share of Series B Convertible Non-Redeemable Preferred Stock ("Series B Preferred Stock") automatically converted into 1,333.33 shares of Common Stock, for no additional consideration, at 5 p. m. Eastern Time on March 20, 2026, subject to the terms of the Certificate of Designations, Preferences and Rights of Series B Convertible Non-Redeemable Preferred Stock of Curis, Inc. (the "Certificate of Designations") and subject to the applicable Beneficial Ownership Limitations (as defined in the Certificate of Designations). Each share of Series B Preferred Stock was sold together with a Series A Warrant to purchase 1,333.33 shares of Common Stock, a Series B Warrant to purchase 1,333.33 shares of Common Stock and a Series C Warrant to purchase 1,333.33 shares of Common Stock (collectively, a "Security"). The Securities were sold at a purchase price of $1,000.00 per Security to the Reporting Person.