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Terrestrial Energy (IMSR) details 2026 director elections and auditor ratification

Filing Impact
(Moderate)
Filing Sentiment
(Neutral)
Form Type
8-K

Rhea-AI Filing Summary

Terrestrial Energy Inc. reported the results of its 2026 Annual Meeting of Stockholders held on June 11, 2026. Stockholders elected three Class I directors—Frederick Buckman, William Johnson, and Hugh MacDiarmid—to three-year terms, each receiving about 56.7 million votes in favor and roughly 0.3 million withheld, with 12.7 million broker non-votes.

Stockholders also ratified UHY LLP as the independent registered public accounting firm for the fiscal year ending December 31, 2026, with 69,103,315 votes for, 400,853 against, and 165,166 abstentions.

Positive

  • None.

Negative

  • None.
Item 5.07 Submission of Matters to a Vote of Security Holders Governance
Results of a shareholder vote on proposals at an annual or special meeting.
Meeting date June 11, 2026 2026 Annual Meeting of Stockholders
Votes for Frederick Buckman 56,661,573 votes Election as Class I director
Votes for William Johnson 56,668,879 votes Election as Class I director
Votes for Hugh MacDiarmid 56,662,842 votes Election as Class I director
Broker non-votes per director 12,704,151 votes Director election proposals
Auditor ratification for votes 69,103,315 votes Ratification of UHY LLP for FY ending Dec. 31, 2026
Auditor ratification against votes 400,853 votes Ratification of UHY LLP
Auditor ratification abstain 165,166 votes Ratification of UHY LLP
Annual Meeting of Stockholders financial
"On June 11, 2026, Terrestrial Energy Inc. held its 2026 Annual Meeting of Stockholders"
broker non-votes financial
"Director Name | For | Withheld | Broker Non-Votes"
Broker non-votes occur when a brokerage firm is unable to vote on a shareholder’s behalf during a company election or decision because the shareholder has not given specific voting instructions, and the broker is not allowed or chooses not to vote on certain matters. They are important because they can affect the outcome of votes, especially when the results are close, by effectively reducing the total number of votes cast.
independent registered public accounting firm financial
"ratified the appointment of UHY LLP as the Company’s independent registered public accounting firm"
An independent registered public accounting firm is an outside accounting company officially registered with the government regulator to examine and report on a public company's financial records and controls. Investors treat its reports like an impartial inspector’s certificate — they add credibility to financial statements, help spot errors or misleading claims, and reduce the risk that shareholders are relying on unchecked or biased numbers.
Emerging growth company regulatory
"Emerging growth company"
An emerging growth company is a recently public or smaller public firm that qualifies for temporary, lighter regulatory and disclosure rules to reduce the cost and effort of being public. For investors, it means the company may provide less historical financial detail and face fewer reporting requirements than larger firms, so it can grow more quickly but also carries higher uncertainty—like buying a promising early-stage product with fewer user reviews.
Class I directors financial
"serve for three-year terms as Class I directors"
Class I directors are the subset of a company’s board whose terms expire at a specific annual meeting under a staggered election system that divides directors into multiple groups with different re-election years. For investors this matters because staggered classes slow how quickly shareholders can replace the board, affecting takeover risk, governance change and the pace of corporate decisions — like rotating only part of a team instead of swapping everyone at once.
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0002019804false0002019804imsr:RedeemableWarrantsEachWholeWarrantExercisableForOneCommonStockAtPriceOf11.50PerShareMember2026-06-112026-06-110002019804imsr:CommonStockParValue0.0001PerShareMember2026-06-112026-06-1100020198042026-06-112026-06-11

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): June 11, 2026

TERRESTRIAL ENERGY INC.

(Exact name of registrant as specified in its charter)

Delaware

  ​ ​ ​

001-42252

  ​ ​ ​

98-1785406

(State or other jurisdiction
of incorporation)

(Commission File Number)

(IRS Employer
Identification No.)

2730 W. Tyvola Road, Suite 100

Charlotte, NC 28217

(Address of principal executive offices, including zip code)

Registrant’s telephone number, including area code: (646) 687-8212

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

 Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

 Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

 Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

 Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act

Title of each class

  ​ ​ ​

Trading
Symbol(s)

  ​ ​ ​

Name of each exchange
on which
registered

Common Stock, par value $0.0001 per share

 

IMSR

 

The Nasdaq Stock
Market LLC

Redeemable Warrants, each whole warrant exercisable for one Common
Stock at a price of $11.50 per share

 

IMSRW

 

The Nasdaq Stock
Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

Item 5.07 Submission of Matters to a Vote of Security Holders

On June 11, 2026, Terrestrial Energy Inc. (the “Company”) held its 2026 Annual Meeting of Stockholders (the “Annual Meeting”). At the Annual Meeting, the Company’s stockholders voted on the matters described in the Definitive Proxy Statement on Schedule 14A filed with the Securities and Exchange Commission on April 29, 2026 (the “Proxy Statement”). The final voting results for the matters submitted to a vote of stockholders were as follows:

The Company’s stockholders elected the three nominees to the Company’s Board of Directors to serve for three-year terms as Class I directors, with the votes cast as follows:

Director Name

For

Withheld

Broker Non-Votes

Frederick Buckman

56,661,573

303,610

12,704,151

William Johnson

56,668,879

296,304

12,704,151

Hugh MacDiarmid

56,662,842

302,341

12,704,151

The Company’s stockholders ratified the appointment of UHY LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2026, with votes cast as follows:


For

Against

Abstain

69,103,315

400,853

165,166

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Date: June 12, 2026

TERRESTRIAL ENERGY INC.

 

 

 

By:

/s/ Brian Thrasher

 

Name:

Brian Thrasher

 

Title:

Chief Financial Officer

FAQ

What did Terrestrial Energy Inc. (IMSR) report in this 8-K filing?

Terrestrial Energy Inc. reported the final voting results from its 2026 Annual Meeting of Stockholders. The filing details board of director elections and ratification of the company’s independent registered public accounting firm for the fiscal year ending December 31, 2026, including specific vote counts.

Which directors were elected at Terrestrial Energy Inc.’s 2026 Annual Meeting?

Stockholders elected Frederick Buckman, William Johnson, and Hugh MacDiarmid as Class I directors. Each will serve a three-year term on the board, after receiving strong majority support in the election with over 56.6 million votes cast in favor for each nominee.

How did Terrestrial Energy Inc. (IMSR) stockholders vote on the auditor ratification?

Stockholders ratified UHY LLP as Terrestrial Energy Inc.’s independent registered public accounting firm for the fiscal year ending December 31, 2026. The proposal received 69,103,315 votes for, 400,853 votes against, and 165,166 abstentions, indicating broad approval of the audit firm.

When was Terrestrial Energy Inc.’s 2026 Annual Meeting of Stockholders held?

The 2026 Annual Meeting of Stockholders for Terrestrial Energy Inc. was held on June 11, 2026. At this meeting, investors voted on the election of three Class I directors and on ratifying UHY LLP as the company’s independent registered public accounting firm.

What are broker non-votes in Terrestrial Energy Inc.’s director elections?

Broker non-votes are shares held by brokers that were not voted on a particular proposal. In Terrestrial Energy Inc.’s director elections, there were 12,704,151 broker non-votes for each nominee, meaning those shares were not counted for or against the director candidates.

Filing Exhibits & Attachments

4 documents