William D. Johnson

CIK: 0001183048

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 (100.0%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

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

Companies & Roles (2)

NISOURCE INC.

Director

IMSR

Terrestrial Energy Inc. /DE/

Director

Discretionary Trading P&L

Holdings

Transaction History (5 total)

NI
NISOURCE INC.
May 11, 2026
Award(A)
Direct
3.8K shares at avg. $47.03$179K
IMSR
Terrestrial Energy Inc. /DE/
Dec 18, 2025
Award(A)
Restricted Stock Units
Direct
1K shares-
IMSR
Terrestrial Energy Inc. /DE/
Dec 18, 2025
Award(A)
Restricted Stock Units
Direct
5.9K shares-
IMSR
Terrestrial Energy Inc. /DE/
Dec 18, 2025
Award(A)
Resricted Stock Units
Direct
1.7K shares-
NI
NISOURCE INC.
May 12, 2025
Award(A)
Direct
4.5K shares at avg. $38.32$174K

		Type	Shares	Price		Ownership
May 11, 2026	NI NISOURCE INC.	Award(A)	3,807	$47.03	$179,043	Direct
Dec 18, 2025	IMSR Terrestrial Energy Inc. /DE/	Award(A) Restricted Stock Units	1,029	-	-	Direct
Dec 18, 2025	IMSR Terrestrial Energy Inc. /DE/	Award(A) Restricted Stock Units	5,865	-	-	Direct
Dec 18, 2025	IMSR Terrestrial Energy Inc. /DE/	Award(A) Resricted Stock Units	1,720	-	-	Direct
May 12, 2025	NI NISOURCE INC.	Award(A)	4,541	$38.32	$174,011	Direct

1-5 of 5 transactions

About JOHNSON WILLIAM D

JOHNSON WILLIAM D (SEC CIK 0001183048) files insider reports with the SEC as Director of NISOURCE INC. (NI) and Director of Terrestrial Energy Inc. /DE/ (IMSR).

Signal8 holds 5 ownership filings by JOHNSON WILLIAM D (1 Form 3, 4 Form 4), filed between May 14, 2025 and May 13, 2026. Those filings report 5 transactions, from May 12, 2025 to May 11, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on JOHNSON WILLIAM D's filings is in CHARLOTTE, NC.

Recent filings by JOHNSON WILLIAM D

May 11, 2026: Grant or award of NI shares (Form 4, code A).
Dec 18, 2025: Grants or awards of IMSR derivative securities (3 lines, Form 4, code A).
May 12, 2025: Grant or award of NI shares (Form 4, code A).

Other insiders filing for NISOURCE INC. (NI)

Anderson Shawn, EVP & CFO
Jefferson William Jr., EVP, Chief Op & Safety Officer
BIRMINGHAM MELODY, EVP & Grp President, Utilities
Jesanis Michael E, Director
Berman Melanie B., EVP Administration & CHRO
Yates Lloyd M, Director and President & CEO

How to read Form 4 transaction codes