TRXB: Marcus Joel S reports a conversion

By AlphaYouPublished Oct 13, 2026Form 4

Stocks in this disclosure

Reported activity

MARCUS JOEL S

Reporting filer

Marcus Joel S reports a conversion, not an open-market purchase or sale, in TRex Bio, Inc.. Form 4 filed Oct 13, 2026 lists 2 entries.

Disclosed: Oct 13, 2026

Reported details

2 entries

All validated entries in this disclosure
Security	Owner	Date	Code	Action	Quantity	Price	Following holdings	Reporting delay	Filed terms and references
Common Stock	MARCUS JOEL S	2026-10-13	C	Conversion	41871	Not stated (see footnotes)	41,871	0 days	Filed terms security Title: Common Stock transaction Date: 2026-10-13 transaction Form Type: 4 transaction Code: C equity Swap Involved: false transaction Shares: 41871 id: F1 transaction Acquired Disposed Code: A shares Owned Following Transaction: 41871 direct Or Indirect Ownership: D
Series B Convertible Preferred Stock (derivative)	MARCUS JOEL S	2026-10-13	C	Conversion	161828	0	0	0 days	Filed terms security Title: Series B Convertible Preferred Stock id: F1 transaction Date: 2026-10-13 transaction Form Type: 4 transaction Code: C equity Swap Involved: false transaction Shares: 161828 transaction Price Per Share: 0 transaction Acquired Disposed Code: D id: F1 id: F1 underlying Security Title: Common Stock underlying Security Shares: 41871 shares Owned Following Transaction: 0 direct Or Indirect Ownership: D

Common Stock

Owner: MARCUS JOEL S
Date: 2026-10-13
Code: C
Action: Conversion
Quantity: 41871
Price: Not stated (see footnotes)
Following holdings: 41,871
Reporting delay: 0 days
Filed terms and references: Filed terms
security Title: Common Stock
transaction Date: 2026-10-13
transaction Form Type: 4
transaction Code: C
equity Swap Involved: false
transaction Shares: 41871
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 41871
direct Or Indirect Ownership: D

Series B Convertible Preferred Stock (derivative)

Owner: MARCUS JOEL S
Date: 2026-10-13
Code: C
Action: Conversion
Quantity: 161828
Price: 0
Following holdings: 0
Reporting delay: 0 days
Filed terms and references: Filed terms
security Title: Series B Convertible Preferred Stock
id: F1
transaction Date: 2026-10-13
transaction Form Type: 4
transaction Code: C
equity Swap Involved: false
transaction Shares: 161828
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 41871
shares Owned Following Transaction: 0
direct Or Indirect Ownership: D

Purchases, sales, grants and option exercises are different transactions. The reported code identifies the action; it does not establish a motive.

Filing context

Quantities and prices are shown in the units filed. No trade value is inferred from their product.
MARCUS JOEL S: Director.
F1: On October 13, 2026, the shares of Series B Convertible Preferred Stock automatically converted into shares of Common Stock on a 3.8649-to-1 basis without payment of further consideration immediately prior to the closing of the Issuer's initial public offering. The shares have no expiration date.

Original sources

SEC ownership filing

Prepared automatically from public filing data. Report a correction.

Security

Owner

Date

Code

Action

Quantity

Price

Following holdings

Reporting delay

Filed terms and references

Common Stock

MARCUS JOEL S

2026-10-13

Conversion

41871

Not stated (see footnotes)

41,871

0 days

Filed terms

security Title: Common Stock
transaction Date: 2026-10-13
transaction Form Type: 4
transaction Code: C
equity Swap Involved: false
transaction Shares: 41871
id: F1
transaction Acquired Disposed Code: A
shares Owned Following Transaction: 41871
direct Or Indirect Ownership: D

Series B Convertible Preferred Stock (derivative)

MARCUS JOEL S

2026-10-13

Conversion

161828

0 days

Filed terms

security Title: Series B Convertible Preferred Stock
id: F1
transaction Date: 2026-10-13
transaction Form Type: 4
transaction Code: C
equity Swap Involved: false
transaction Shares: 161828
transaction Price Per Share: 0
transaction Acquired Disposed Code: D
id: F1
id: F1
underlying Security Title: Common Stock
underlying Security Shares: 41871
shares Owned Following Transaction: 0
direct Or Indirect Ownership: D

Filing context

Quantities and prices are shown in the units filed. No trade value is inferred from their product.

MARCUS JOEL S: Director.

F1: On October 13, 2026, the shares of Series B Convertible Preferred Stock automatically converted into shares of Common Stock on a 3.8649-to-1 basis without payment of further consideration immediately prior to the closing of the Issuer's initial public offering. The shares have no expiration date.