Laura Berner

CIK: 0001958382

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)7 (58.3%)

Compensation grants

Other (G, F, J, C, D, …)5 (41.7%)

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

Companies & Roles (2)

TRXB

TRex Bio, Inc.

Officer

BOLT

Bolt Biotherapeutics, Inc.

Director

Discretionary Trading P&L

Holdings

Transaction History (12 total)

BOLT
Bolt Biotherapeutics, Inc.
Jun 10, 2026
Award(A)
Stock Option (Right to Buy)
Direct
5K shares-
BOLT
Bolt Biotherapeutics, Inc.
Dec 12, 2025
Award(A)
Director Stock Option (Right to Buy)
Direct
2.5K shares-
BOLT
Bolt Biotherapeutics, Inc.
Dec 12, 2025
Disposition(D)
Director Stock Option (Right to Buy)
Direct
2.5K shares-
BOLT
Bolt Biotherapeutics, Inc.
Dec 12, 2025
Award(A)
Director Stock Option (Right to Buy)
Direct
613 shares-
BOLT
Bolt Biotherapeutics, Inc.
Dec 12, 2025
Disposition(D)
Director Stock Option (Right to Buy)
Direct
613 shares-
BOLT
Bolt Biotherapeutics, Inc.
Dec 12, 2025
Award(A)
Director Stock Option (Right to Buy)
Direct
1.3K shares-
BOLT
Bolt Biotherapeutics, Inc.
Dec 12, 2025
Disposition(D)
Director Stock Option (Right to Buy)
Direct
1.3K shares-
BOLT
Bolt Biotherapeutics, Inc.
Dec 12, 2025
Award(A)
Director Stock Option (Right to Buy)
Direct
1.1K shares-
BOLT
Bolt Biotherapeutics, Inc.
Dec 12, 2025
Disposition(D)
Director Stock Option (Right to Buy)
Direct
1.1K shares-
BOLT
Bolt Biotherapeutics, Inc.
Dec 12, 2025
Award(A)
Director Stock Option (Right to Buy)
Direct
1.1K shares-
BOLT
Bolt Biotherapeutics, Inc.
Dec 12, 2025
Disposition(D)
Director Stock Option (Right to Buy)
Direct
1.1K shares-
BOLT
Bolt Biotherapeutics, Inc.
May 27, 2025
Award(A)
Stock Option (Right to Buy)
Direct
1.1K shares-

		Type	Shares	Price		Ownership
Jun 10, 2026	BOLT Bolt Biotherapeutics, Inc.	Award(A) Stock Option (Right to Buy)	5,000	-	-	Direct
Dec 12, 2025	BOLT Bolt Biotherapeutics, Inc.	Award(A) Director Stock Option (Right to Buy)	2,500	-	-	Direct
Dec 12, 2025	BOLT Bolt Biotherapeutics, Inc.	Disposition(D) Director Stock Option (Right to Buy)	2,500	-	-	Direct
Dec 12, 2025	BOLT Bolt Biotherapeutics, Inc.	Award(A) Director Stock Option (Right to Buy)	613	-	-	Direct
Dec 12, 2025	BOLT Bolt Biotherapeutics, Inc.	Disposition(D) Director Stock Option (Right to Buy)	613	-	-	Direct
Dec 12, 2025	BOLT Bolt Biotherapeutics, Inc.	Award(A) Director Stock Option (Right to Buy)	1,250	-	-	Direct
Dec 12, 2025	BOLT Bolt Biotherapeutics, Inc.	Disposition(D) Director Stock Option (Right to Buy)	1,250	-	-	Direct
Dec 12, 2025	BOLT Bolt Biotherapeutics, Inc.	Award(A) Director Stock Option (Right to Buy)	1,100	-	-	Direct
Dec 12, 2025	BOLT Bolt Biotherapeutics, Inc.	Disposition(D) Director Stock Option (Right to Buy)	1,100	-	-	Direct
Dec 12, 2025	BOLT Bolt Biotherapeutics, Inc.	Award(A) Director Stock Option (Right to Buy)	1,100	-	-	Direct
Dec 12, 2025	BOLT Bolt Biotherapeutics, Inc.	Disposition(D) Director Stock Option (Right to Buy)	1,100	-	-	Direct
May 27, 2025	BOLT Bolt Biotherapeutics, Inc.	Award(A) Stock Option (Right to Buy)	1,100	-	-	Direct

1-12 of 12 transactions

About Berner Laura

Berner Laura (SEC CIK 0001958382) files insider reports with the SEC as Chief Operating Officer of TRex Bio, Inc. (TRXB) and Director of Bolt Biotherapeutics, Inc. (BOLT).

Signal8 holds 4 ownership filings by Berner Laura (1 Form 3, 3 Form 4), filed between Jul 2, 2025 and Oct 8, 2026. Those filings report 12 transactions, from May 27, 2025 to Jun 10, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Berner Laura's filings is in SOUTH SAN FRANCISCO, CA.

Recent filings by Berner Laura

Jun 10, 2026: Grant or award of BOLT derivative securities (Form 4, code A).
Dec 12, 2025: Grant or award of BOLT derivative securities (Form 4, code A).
Dec 12, 2025: Disposition to issuer transaction of BOLT derivative securities (Form 4, code D).
Dec 12, 2025: Grant or award of BOLT derivative securities (Form 4, code A).
Dec 12, 2025: Disposition to issuer transaction of BOLT derivative securities (Form 4, code D).

Other insiders filing for TRex Bio, Inc. (TRXB)

Alexandria Venture Investments, LLC, 10% Owner
MARCUS JOEL S, Director
SVLSF VI, LLC, 10% Owner
Coy Travis Alan, Director
Ross Michael Jay, Director
Hirth Peter, Director

How to read Form 4 transaction codes