Scott C. Brun

CIK: 0001863614

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)0 (0.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)8 (50.0%)

Compensation grants

Other (G, F, J, C, D, …)8 (50.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (3)

FBRX

Forte Biosciences, Inc.

Director

CABA

Cabaletta Bio, Inc.

Director

JSPR

Jasper Therapeutics, Inc.

Director

Discretionary Trading P&L

Holdings

Transaction History (16 total)

FBRX
Forte Biosciences, Inc.
Aug 27, 2026
Disposition(D)
Stock Option (right to buy)
Direct
2K shares-
FBRX
Forte Biosciences, Inc.
Aug 27, 2026
Disposition(D)
Restricted Stock Units
Direct
18.4K shares-
FBRX
Forte Biosciences, Inc.
Aug 27, 2026
Disposition(D)
Stock Option (right to buy)
Direct
31K shares-
FBRX
Forte Biosciences, Inc.
Aug 27, 2026
Disposition(D)
Stock Option (right to buy)
Direct
2K shares-
FBRX
Forte Biosciences, Inc.
Aug 27, 2026
Disposition(D)
Stock Option (right to buy)
Direct
1K shares-
CABA
Cabaletta Bio, Inc.
Jun 9, 2026
Award(A)
Stock Option (Right to Buy)
Direct
22K shares-
FBRX
Forte Biosciences, Inc.
May 29, 2026
Award(A)
Restricted Stock Units
Direct
18.4K shares-
JSPR
Jasper Therapeutics, Inc.
Jul 3, 2025
Award(A)
Stock Option (right to buy)
Direct
7.5K shares-
CABA
Cabaletta Bio, Inc.
Jun 9, 2025
Award(A)
Stock Option (Right to Buy)
Direct
22K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Disposition(D)
Stock Option (Right to Buy)
Direct
44K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Award(A)
Stock Option (Right to Buy)
Direct
44K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Disposition(D)
Stock Option (Right to Buy)
Direct
22K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Award(A)
Stock Option (Right to Buy)
Direct
22K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Disposition(D)
Stock Option (Right to Buy)
Direct
22K shares-
CABA
Cabaletta Bio, Inc.
May 19, 2025
Award(A)
Stock Option (Right to Buy)
Direct
22K shares-
FBRX
Forte Biosciences, Inc.
Mar 20, 2025
Award(A)
Stock Option (right to buy)
Direct
31K shares-

		Type	Shares	Price		Ownership
Aug 27, 2026	FBRX Forte Biosciences, Inc.	Disposition(D) Stock Option (right to buy)	2,000	-	-	Direct
Aug 27, 2026	FBRX Forte Biosciences, Inc.	Disposition(D) Restricted Stock Units	18,353	-	-	Direct
Aug 27, 2026	FBRX Forte Biosciences, Inc.	Disposition(D) Stock Option (right to buy)	31,000	-	-	Direct
Aug 27, 2026	FBRX Forte Biosciences, Inc.	Disposition(D) Stock Option (right to buy)	2,000	-	-	Direct
Aug 27, 2026	FBRX Forte Biosciences, Inc.	Disposition(D) Stock Option (right to buy)	1,000	-	-	Direct
Jun 9, 2026	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	22,000	-	-	Direct
May 29, 2026	FBRX Forte Biosciences, Inc.	Award(A) Restricted Stock Units	18,353	-	-	Direct
Jul 3, 2025	JSPR Jasper Therapeutics, Inc.	Award(A) Stock Option (right to buy)	7,500	-	-	Direct
Jun 9, 2025	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	22,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Disposition(D) Stock Option (Right to Buy)	44,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	44,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Disposition(D) Stock Option (Right to Buy)	22,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	22,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Disposition(D) Stock Option (Right to Buy)	22,000	-	-	Direct
May 19, 2025	CABA Cabaletta Bio, Inc.	Award(A) Stock Option (Right to Buy)	22,000	-	-	Direct
Mar 20, 2025	FBRX Forte Biosciences, Inc.	Award(A) Stock Option (right to buy)	31,000	-	-	Direct

1-16 of 16 transactions

About Brun Scott C.

Brun Scott C. (SEC CIK 0001863614) files insider reports with the SEC as Director of Forte Biosciences, Inc. (FBRX), Director of Cabaletta Bio, Inc. (CABA) and Director of Jasper Therapeutics, Inc. (JSPR).

Signal8 holds 7 ownership filings by Brun Scott C., all Form 4s, filed between Mar 21, 2025 and Aug 27, 2026. Those filings report 16 transactions, from Mar 20, 2025 to Aug 27, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Brun Scott C.'s filings is in DALLAS, TX.

Recent filings by Brun Scott C.

Aug 27, 2026: Disposition to issuer transactions of FBRX derivative securities (5 lines, Form 4, code D).
Jun 9, 2026: Grant or award of CABA derivative securities (Form 4, code A).
May 29, 2026: Grant or award of FBRX derivative securities (Form 4, code A).
Jul 3, 2025: Grant or award of JSPR derivative securities (Form 4, code A).
Jun 9, 2025: Grant or award of CABA derivative securities (Form 4, code A).

Other insiders filing for Forte Biosciences, Inc. (FBRX)

How to read Form 4 transaction codes