Stephen W. Webster

CIK: 0001438421

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)5 (83.3%)

Compensation grants

Other (G, F, J, C, D, …)1 (16.7%)

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

Companies & Roles (4)

NXTC

NextCure, Inc.

Director

CGEM

Cullinan Therapeutics, Inc.

Director

ELOX

Eloxx Pharmaceuticals, Inc.

Director

GRTS

Gritstone bio, Inc.

Director

Discretionary Trading P&L

Holdings

Transaction History (6 total)

NXTC
NextCure, Inc.
Jun 18, 2026
Award(A)
Stock Option (Right to Buy)
Direct
2.3K shares-
CGEM
Cullinan Therapeutics, Inc.
Jun 16, 2026
Award(A)
Stock Option (Right to Buy)
Direct
25.3K shares-
ELOX
Eloxx Pharmaceuticals, Inc.
Jun 8, 2026
Award(A)
Stock Option (Right to Buy)
Direct
13.6K shares-
NXTC
NextCure, Inc.
Jun 20, 2025
Award(A)
Stock Option (Right to Buy)
Direct
18.7K shares-
CGEM
Cullinan Therapeutics, Inc.
Jun 12, 2025
Award(A)
Stock Option (Right to Buy)
Direct
38.5K shares-
GRTS
Gritstone bio, Inc.
Apr 4, 2025
Other(J)
Direct
25K shares-

		Type	Shares	Price		Ownership
Jun 18, 2026	NXTC NextCure, Inc.	Award(A) Stock Option (Right to Buy)	2,340	-	-	Direct
Jun 16, 2026	CGEM Cullinan Therapeutics, Inc.	Award(A) Stock Option (Right to Buy)	25,319	-	-	Direct
Jun 8, 2026	ELOX Eloxx Pharmaceuticals, Inc.	Award(A) Stock Option (Right to Buy)	13,587	-	-	Direct
Jun 20, 2025	NXTC NextCure, Inc.	Award(A) Stock Option (Right to Buy)	18,700	-	-	Direct
Jun 12, 2025	CGEM Cullinan Therapeutics, Inc.	Award(A) Stock Option (Right to Buy)	38,513	-	-	Direct
Apr 4, 2025	GRTS Gritstone bio, Inc.	Other(J)	25,000	-	-	Direct

1-6 of 6 transactions

About Webster Stephen W

Webster Stephen W (SEC CIK 0001438421) files insider reports with the SEC as Director of NextCure, Inc. (NXTC), Director of Cullinan Therapeutics, Inc. (CGEM) and Director of Eloxx Pharmaceuticals, Inc. (ELOX). Signal8 also holds filings tied to 1 other company.

Signal8 holds 7 ownership filings by Webster Stephen W (1 Form 3, 6 Form 4), filed between Apr 8, 2025 and Jun 22, 2026. Those filings report 6 transactions, from Apr 4, 2025 to Jun 18, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Webster Stephen W's filings is in ARLINGTON, MA.

Recent filings by Webster Stephen W

Jun 18, 2026: Grant or award of NXTC derivative securities (Form 4, code A).
Jun 16, 2026: Grant or award of CGEM derivative securities (Form 4, code A).
Jun 8, 2026: Grant or award of ELOX derivative securities (Form 4, code A).
Jun 20, 2025: Grant or award of NXTC derivative securities (Form 4, code A).
Jun 12, 2025: Grant or award of CGEM derivative securities (Form 4, code A).

Other insiders filing for NextCure, Inc. (NXTC)

ADAR1 Capital Management, LLC, 10% Owner
Simcere Zaiming, Inc., Officer
Feigal Ellen, Director
Jones Elaine V, Director
Borgman Anne Elizabeth, Director
KABAKOFF DAVID S, Director

How to read Form 4 transaction codes