MACDIARMID JOHN HUGH enters TERRESTRIAL ENERGY INC. /DE/ with 25.95K shares plus derivative instruments

Holding both equity and derivatives at entry signals strong long-term conviction in the company.

Direct Derivatives

MACDIARMID JOHN HUGH

Filed: 11/7/2025ACC: 0001104659-25-108631

InsiderMACDIARMID JOHN HUGHCIK 2092518

→

IssuerTERRESTRIAL ENERGY INC. /DE/CIK 2019804

Director

Since Oct 2025

25.95K

Baseline shares

100% direct

25.95K

Direct ownership

1 position

2.14M

Derivative underlying

13 instruments

Security positions

All direct

Non-Derivative Holdings1

Common Stock, par value $0.0001 per share ("Common Stock")

Direct

Shares owned25.95K

Total

25.95K direct25.95K

Security Title	Shares Owned	Ownership Type
Common Stock, par value $0.0001 per share ("Common Stock")	25.95K	Direct
Total	25.95K	25.95K direct

Derivative Holdings13

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

447.03K

Shares owned

N/A

Exercise price

0.0028

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

78.23K

Shares owned

N/A

Exercise price

2.2370

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

22.53K

Shares owned

N/A

Exercise price

2.2370

Expiration

—

Exercise window

—

Contingent Value Right

Direct

Underlying security

Common Stock

Underlying shares

N/A

Shares owned

N/A

Exercise price

Expiration

—

Exercise window

—

Exchangeable Shares

Indirect

Underlying security

Common Stock

Underlying shares

134.11K

Shares owned

N/A

Exercise price

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

18.78K

Shares owned

N/A

Exercise price

2.2370

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

111.76K

Shares owned

N/A

Exercise price

1.4764

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

3.76K

Shares owned

N/A

Exercise price

2.2370

Expiration

—

Exercise window

—

Exchangeable Shares

Direct

Underlying security

Common Stock

Underlying shares

558.79K

Shares owned

N/A

Exercise price

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

11.18K

Shares owned

N/A

Exercise price

2.2370

Expiration

—

Exercise window

—

Warrants (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

78.23K

Shares owned

N/A

Exercise price

2.2370

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

670.54K

Shares owned

N/A

Exercise price

1.1185

Expiration

—

Exercise window

—

Stock Option (Right to Buy)

Direct

Underlying security

Common Stock

Underlying shares

6.04K

Shares owned

N/A

Exercise price

2.0133

Expiration

—

Exercise window

—

Total

Underlying

2.14M

Owned

0.00

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Stock Option (Right to Buy) Direct	Common Stock	0.0028	—	—	447.03K	N/A
Stock Option (Right to Buy) Direct	Common Stock	2.2370	—	—	78.23K	N/A
Stock Option (Right to Buy) Direct	Common Stock	2.2370	—	—	22.53K	N/A
Contingent Value Right Direct	Common Stock		—	—	N/A	N/A
Exchangeable Shares Indirect	Common Stock		—	—	134.11K	N/A
Stock Option (Right to Buy) Direct	Common Stock	2.2370	—	—	18.78K	N/A
Stock Option (Right to Buy) Direct	Common Stock	1.4764	—	—	111.76K	N/A
Stock Option (Right to Buy) Direct	Common Stock	2.2370	—	—	3.76K	N/A
Exchangeable Shares Direct	Common Stock		—	—	558.79K	N/A
Stock Option (Right to Buy) Direct	Common Stock	2.2370	—	—	11.18K	N/A
Warrants (Right to Buy) Direct	Common Stock	2.2370	—	—	78.23K	N/A
Stock Option (Right to Buy) Direct	Common Stock	1.1185	—	—	670.54K	N/A
Stock Option (Right to Buy) Direct	Common Stock	2.0133	—	—	6.04K	N/A
Total					2.14M	0.00