Constellation Acquisition Corp I — fact timeline

Constellation Acquisition Corp I incurred loan of $5,000 with Constellation Sponsor LP at does not bear interest maturing upon closing of the Company’s initial business combination.

“On May 28, 2026, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $5,000 (the “Extension Funds”), as approved by unanimous resolution of the extension committee of the Company’s board of directors, dated May 28, 2026, pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP (the “Note”)”

Constellation Acquisition Corp I amended loan with Constellation Sponsor LP at does not bear interest maturing matures upon closing of the Company’s initial business combination.

“pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP”

Constellation Acquisition Corp I entered into Business Combination Agreement with HiTech Minerals Inc. valued at an equity value of $500 million (effective 2026-04-09).

“On April 9, 2026, Constellation Acquisition Corp I, a Cayman Islands exempted company (“CSTA”), US Elemental Inc., a Delaware corporation (“PubCo”), CAC Merger Sub I LLC, a Delaware limited liability company and a direct wholly owned subsidiary of PubCo (“Merger Sub 1”), USE Merger Sub 2 Inc., a Nevada corporation (“Merger Sub 2”), and HiTech Minerals Inc., a Nevada corporation (“HiTech”), entered into a Business Combination Agreement (as it may be amended, supplemented or otherwise modified from time to time, the “Business Combination Agreement”).”

Constellation Acquisition Corp I incurred loan of $5,000 with Constellation Sponsor LP maturing upon closing of the Company's initial business combination.

“On March 26, 2026, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $5,000 (the “Extension Funds”), as approved by unanimous resolution of the extension committee of the Company’s board of directors, dated March 26, 2026, pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP (the “Note”), which Extension Funds the Company deposited into the Company’s trust account for its public shareholders.”

Constellation Acquisition Corp I amended loan of increase the principal amount by $3,000,000 from $2,250,000 to $5,250,000 with Constellation Sponsor LP.

“On March 18, 2026, the Company further amended the Promissory Note (the “Second Amendment”), to increase the principal amount by $3,000,000 from $2,250,000 to $5,250,000.”

Constellation Acquisition Corp I amended Second Amendment with Constellation Sponsor LP valued at $3,000,000 (effective 2026-03-18).

“On March 18, 2026, the Company further amended the Promissory Note (the “Second Amendment”), to increase the principal amount by $3,000,000 from $2,250,000 to $5,250,000.”

Constellation Acquisition Corp I incurred loan of $5,000 with Constellation Sponsor LP at The Note does not bear interest maturing upon closing of the Company’s initial business combination.

“On February 27, 2026, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $5,000 (the “Extension Funds”), as approved by unanimous director resolution, dated February 26, 2026, pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP (the “Note”), which Extension Funds the Company deposited into the Company’s trust account for its public shareholders.”

Constellation Acquisition Corp I: Extended the deadline to consummate a business combination from January 29, 2026 to February 28, 2026, with option for up to twelve additional monthly extensions without further shareholder vote (effective 2026-01-28).

“On January 27, 2026, the Company held the Shareholder Meeting (A) to amend, by way of special resolution, the Company’s amended and restated memorandum and articles of association (the “ Memorandum and Articles of Association ”) to extend the date (the “ Termination Date ”) by which the Company has to consummate a business combination (the “ Articles Extension ”) from January 29, 2026 (the “ Original Termination Date ”) to February 28, 2026”

Constellation Acquisition Corp I incurred loan of $5,000 with Constellation Sponsor LP (or affiliates, members or third party designees) at non-interest bearing maturing unknown.

“the Sponsor (or one or more of its affiliates, members or third party designees) (the “ Lender ”) shall make a deposit into the trust account established in connection with the Company’s initial public offering (the “ Trust Account ”) of $5,000 pursuant to a non-interest bearing, unsecured promissory note issued by the Company to the Lender”

Constellation Acquisition Corp I incurred loan of $5,000 with Constellation Sponsor LP at does not bear interest maturing matures upon closing of the Company's initial business combination.

“On December 23, 2025, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $5,000 (the “Extension Funds”), as approved by unanimous resolution of the extension committee of the Company’s board of directors, dated December 23, 2025, pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP (the “Note”), which Extension Funds the Company deposited into the Company’s trust account for its public shareholders.”

Constellation Acquisition Corp I incurred loan of $5,000 with Constellation Sponsor LP maturing upon closing of the Company’s initial business combination.

“On November 25, 2025, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $5,000 (the “Extension Funds”), as approved by unanimous resolution of the extension committee of the Company’s board of directors, dated November 25, 2025, pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP (the “Note”),”

Constellation Acquisition Corp I incurred loan of $5,000 with Constellation Sponsor LP at does not bear interest maturing upon closing of the Company's initial business combination.

“On October 28, 2025, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $5,000 (the “Extension Funds”), as approved by unanimous resolution of the extension committee of the Company’s board of directors, dated October 24, 2025, pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP (the “Note”)”

Constellation Acquisition Corp I incurred loan of $5,000 with Constellation Sponsor LP at does not bear interest maturing upon closing of the Company's initial business combination.

“On September 26, 2025, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $5,000 (the “Extension Funds”), as approved by unanimous resolution of the extension committee of the Company’s board of directors, dated September 26, 2025, pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP (the “Note”)”

Constellation Acquisition Corp I incurred loan of $5,000 with Constellation Sponsor LP at does not bear interest maturing upon closing of the Company's initial business combination.

“On August 28, 2025, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $5,000 (the “Extension Funds”), as approved by unanimous resolution of the extension committee of the Company’s board of directors, dated August 19, 2025, pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP (the “Note”)”

Constellation Acquisition Corp I incurred loan of $5,000 with Constellation Sponsor LP at does not bear interest maturing upon closing of the Company’s initial business combination.

“On July 28, 2025, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $5,000 (the “Extension Funds”), as approved by unanimous resolution of the extension committee of the Company’s board of directors, dated July 25, 2025, pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP (the “Note”)”

Constellation Acquisition Corp I incurred loan of $5,000 with Constellation Sponsor LP maturing upon closing of the Company’s initial business combination.

“On June 26, 2025, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $5,000 (the “Extension Funds”), as approved by unanimous resolution of the extension committee of the Company’s board of directors, dated June 26, 2025, pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP (the “Note”)”

Constellation Acquisition Corp I incurred loan of $5,000 with Constellation Sponsor LP at does not bear interest maturing matures upon closing of the Company's initial business combination.

“On May 28, 2025, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $5,000 (the “Extension Funds”), as approved by unanimous resolution of the extension committee of the Company’s board of directors, dated May 27, 2025, pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP (the “Note”), which Extension Funds the Company deposited into the Company’s trust account for its public shareholders. This deposit enables the Company to extend the date by which it must complete its initial business combination from May 29, 2025 to June 29, 2025 (the “Extension”). The Extension is the fourth of eleven one-month extensions permitted under the Company’s amended and restated memorandum and articles of association and provides the Company with additional time to complete its initial business combination. The Note does not bear interest and matures upon closing of the Company’s initial business combination.”

Constellation Acquisition Corp I incurred loan of $5,000 with Constellation Sponsor LP at does not bear interest maturing upon closing of the Company's initial business combination.

“On April 29, 2025, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $5,000 (the “Extension Funds”), as approved by unanimous resolution of the extension committee of the Company’s board of directors, dated April 21, 2025, pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP (the “Note”), which Extension Funds the Company deposited into the Company’s trust account for its public shareholders.”

Constellation Acquisition Corp I incurred loan of $5,000 with Constellation Sponsor LP at does not bear interest maturing upon closing of the Company's initial business combination.

“On March 27, 2025, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $5,000 (the “Extension Funds”), as approved by unanimous resolution of the extension committee of the Company’s board of directors, dated March 27, 2025, pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP (the “Note”), which Extension Funds the Company deposited into the Company’s trust account for its public shareholders.”

Constellation Acquisition Corp I incurred loan of $5,000 with Constellation Sponsor LP at does not bear interest maturing upon closing of the Company’s initial business combination.

“On February 25, 2025, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $5,000 (the “Extension Funds"), as approved by unanimous director resolution, dated February 25, 2025, pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP (the “Note")”

Constellation Acquisition Corp I: Amended memorandum and articles of association to permit conversion of Class B ordinary shares into Class A ordinary shares on a one-for-one basis at any time before business combination closing (effective 2025-01-28).

“to amend, by way of special resolution, the Company’s Memorandum and Articles of Association to permit for the issuance of Class A ordinary shares, par value of US$0.0001 per share (the “ Class A Ordinary Shares ”) to holders of the Company’s Class B ordinary shares, par value of US$0.0001 per share (the “ Founder Shares ” or “ Class B Ordinary Shares ” and together with the Class A Ordinary Shares, the “ Ordinary Shares ”), upon the exercise of the right of a holder of the Class B Ordinary Shares to convert such holder’s Class B Ordinary Shares into Class A Ordinary Shares on a one-for-one basis at any time and from time to time prior to the closing of an initial business combination at the election of the holder”

Constellation Acquisition Corp I: Amended memorandum and articles of association to extend business combination deadline to February 29, 2025, with monthly extension options up to January 29, 2026 (effective 2025-01-28).

“On January 27, 2025, the Company held an extraordinary general meeting of shareholders (A) to amend, by way of special resolution, the Company’s amended and restated memorandum and articles of association (the “ Memorandum and Articles of Association ”) to extend the date (the “ Termination Date ”) by which the Company has to consummate a business combination (the “ Articles Extension ”) from January 29, 2025 (the “ Original Termination Date ”) to February 29, 2025”

Constellation Acquisition Corp I incurred loan of $55,000 with Constellation Sponsor LP at does not bear interest maturing upon closing of the Company’s initial business combination.

“drew an aggregate of $55,000 (the “Extension Funds”), as approved by unanimous resolution of the extension committee of the Company’s board of directors (the “Board”), dated April 29, 2024, pursuant to the unsecured promissory note, dated January 30, 2024, between the Company and Constellation Sponsor LP (the “Note”)”

Constellation Acquisition Corp I incurred loan of $55,000 with Constellation Sponsor LP at does not bear interest maturing matures upon closing of the Company’s initial business combination.

“On March 28, 2024, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $55,000 (the “Extension Funds”), as approved by unanimous resolution of the extension committee of the Company’s board of directors (the “Board”), dated March 28, 2024, pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP (the “Note”), which Extension Funds the Company deposited into the Company’s trust account for its public shareholders.”

Constellation Acquisition Corp I incurred loan of $55,000 with Constellation Sponsor LP maturing matures upon closing of the Company's initial business combination.

“On February 29, 2024, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $55,000 (the “Extension Funds”), as approved by unanimous director resolution, dated February 27, 2024, pursuant to the unsecured promissory note, dated January 30, 2024 between the Company and Constellation Sponsor LP (the “Note”), which Extension Funds the Company deposited into the Company’s trust account for its public shareholders.”

Constellation Acquisition Corp I: Amended amended and restated memorandum and articles of association to extend business combination deadline from January 29, 2024 to February 29, 2024, with option for monthly extensions up to January 29, 2025, and to eliminate the redemption limitation on net tangible assets (effective 2024-01-29).

“On January 29, 2024, the Company held the Shareholder Meeting (A) to amend, by way of special resolution, the Company’s amended and restated memorandum and articles of association (the “ Memorandum and Articles of Association ”) to extend the date (the “ Termination Date ”) by which the Company has to consummate a business combination (the “ Articles Extension ”) from January 29, 2024 (the “ Original Termination Date ”) to February 29, 2024 (the “ Articles Extension Date ”) and to allow the Company, without another shareholder vote, to elect to extend the Termination Date to consummate a business combination on a monthly basis for up to eleven times by an additional one month each time after the Articles Extension Date, by resolution of the Board, if requested by the Sponsor, and upon five days’ advance notice prior to the applicable Termination Date, until January 29, 2025, or a total of up to twelve months after the Original Termination Date, unless the closing of a business combinat”

Constellation Acquisition Corp I shareholders approved Redemption Limitation Amendment Proposal at the 2024-01-29 meeting.

“The voting results for the Redemption Limitation Amendment Proposal were as follows: For Against Abstain 10,773,725 354 0”

Constellation Acquisition Corp I shareholders approved Extension Amendment Proposal at the 2024-01-29 meeting.

“The voting results for the Extension Amendment Proposal were as follows: For Against Abstain 10,613,187 160,892 0”

Constellation Acquisition Corp I incurred loan of $1,660,000 with Constellation Sponsor LP maturing upon closing of the Business Combination.

“On January 30, 2024, the Company issued an unsecured promissory note in the principal amount of $1,660,000 (the “ Note ”) to the Sponsor.”

Constellation Acquisition Corp I shareholders approved Adjournment Proposal at the 2024-01-25 meeting.

“The shareholders approved the Adjournment Proposal, as defined in the Definitive Proxy. The Shareholder Meeting has been adjourned until January 29, 2024 at 12:00 p.m., Eastern Time. The voting results for the Adjournment Proposal is as follows: For Against Abstain 10,613,166 160,892 0”

Constellation Acquisition Corp I incurred loan of $150,000 with Constellation Sponsor LP at does not bear interest maturing upon closing of the Company's initial business combination.

“On December 28, 2023, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $150,000 (the “Extension Funds”), as approved by unanimous director resolution, dated December 22, 2023, pursuant to the unsecured promissory note, dated January 30, 2023 between the Company and Constellation Sponsor LP (the “Note”)”

Constellation Acquisition Corp I incurred loan of $150,000 with Constellation Sponsor LP at does not bear interest maturing matures upon closing of the Company’s initial business combination.

“On November 28, 2023, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $150,000 (the “Extension Funds”), as approved by unanimous director resolution, dated November 23, 2023, pursuant to the unsecured promissory note, dated January 30, 2023 between the Company and Constellation Sponsor LP (the “Note”)”

Constellation Acquisition Corp I incurred loan of $150,000 with Constellation Sponsor LP at does not bear interest maturing upon closing of the Company's initial business combination.

“or an Obligation under an Off-Balance Sheet Arrangement or a Registrant. On October 26, 2023, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $150,000 (the “Extension Funds”), as approved by unanimous director resolution, dated October 23, 2023, pursuant to the unsecured promissory note, dated January 30, 2023 between the”

Constellation Acquisition Corp I incurred loan of $150,000 with Constellation Sponsor LP maturing matures upon closing of the Company's initial business combination.

“On September 29, 2023, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $150,000 (the “Extension Funds”), as approved by unanimous director resolution, dated September 27, 2023, pursuant to the unsecured promissory note, dated January 30, 2023 between the Company and Constellation Sponsor LP (the “Note”)”

Constellation Acquisition Corp I incurred loan of $150,000 with Constellation Sponsor LP at does not bear interest maturing upon closing of the Company's initial business combination.

“On August 29, 2023, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $150,000 (the “Extension Funds”), as approved by unanimous director resolution, dated August 22, 2023, pursuant to the unsecured promissory note, dated January 30, 2023 between the Company and Constellation Sponsor LP (the “Note”), which Extension Funds the Company deposited into the Company’s trust account for its public shareholders.”

Constellation Acquisition Corp I incurred loan of $150,000 with Constellation Sponsor LP at does not bear interest maturing upon closing of the Company’s initial business combination.

“On July 28, 2023, Constellation Acquisition Corp I (the "Company") drew an aggregate of $150,000 (the "Extension Funds"), as approved by unanimous director resolution, dated July 27, 2023, pursuant to the unsecured promissory note, dated January 30, 2023 between the Company and Constellation Sponsor LP (the "Note")”

Constellation Acquisition Corp I incurred loan of $150,000 with Constellation Sponsor LP at does not bear interest maturing matures upon closing of the Company’s initial business combination.

“On June 29, 2023, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $150,000 (the “Extension Funds”), as approved by unanimous director resolution, dated June 28, 2023, pursuant to the unsecured promissory note, dated January 30, 2023 between the Company and Constellation Sponsor LP (the “Note”), which Extension Funds the Company deposited into the Company’s trust account for its public shareholders.”

Constellation Acquisition Corp I incurred loan of $150,000 with Constellation Sponsor LP at does not bear interest maturing matures upon closing of the Company’s initial business combination.

“On May 26, 2023, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $150,000 (the “Extension Funds”), as approved by unanimous director resolution, dated May 20, 2023, pursuant to the unsecured promissory note, dated January 30, 2023 between the Company and Constellation Sponsor LP (the “Note”), which Extension Funds the Company deposited into the Company’s trust account for its public shareholders.”

Constellation Acquisition Corp I incurred loan of $150,000 with Constellation Sponsor LP at does not bear interest maturing upon closing of the Company's initial business combination.

“On April 28, 2023, Constellation Acquisition Corp I (the “Company”) drew an aggregate of $150,000 (the “Extension Funds”), as approved by unanimous director resolution, dated April 24, 2023, pursuant to the unsecured promissory note, dated January 30, 2023 between the Company and Constellation Sponsor LP (the “Note”), which Extension Funds the Company deposited into the Company’s trust account for its public shareholders.”

Bob Stefanowski was appointed as Class III director at Constellation Acquisition Corp I.

“On February 28, 2023, Heiko Faass, Nicole Schepanek, and Bob Stefanowski were appointed as members of the board of directors of Constellation Acquisition Corp I (the “Company”), Heiko Faass as a Class II director, Nicole Schepanek as a Class II director, and Bob Stefanowski as a Class III director.”

Nicole Schepanek was appointed as Class II director at Constellation Acquisition Corp I.

“On February 28, 2023, Heiko Faass, Nicole Schepanek, and Bob Stefanowski were appointed as members of the board of directors of Constellation Acquisition Corp I (the “Company”), Heiko Faass as a Class II director, Nicole Schepanek as a Class II director, and Bob Stefanowski as a Class III director.”

Heiko Faass was appointed as Class II director at Constellation Acquisition Corp I.

“On February 28, 2023, Heiko Faass, Nicole Schepanek, and Bob Stefanowski were appointed as members of the board of directors of Constellation Acquisition Corp I (the “Company”), Heiko Faass as a Class II director, Nicole Schepanek as a Class II director, and Bob Stefanowski as a Class III director.”

Constellation Acquisition Corp I: Amended articles of association to extend business combination deadline from January 29, 2023 to April 29, 2023, with option for further monthly extensions up to January 29, 2024 (effective 2023-01-31).

“Item 5.03 Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year. On January 27, 2023, the Company held the Extension Meeting to amend the Company’s amended and restated memorandum and articles of association (the “ Articles Amendment ”) to extend the date (the “ Termination Date ”) by which the Company has to consummate a business combination from January 29, 2023 (the “ Original Termination Date ”) to April 29, 2023 (the “ Articles Extension Date ”) and to allow the Company, without another shareholder vote, to elect to extend the Termination Date to consummate a business combination on a monthly basis for up to nine times by an additional one month each time after the Articles Extension Date, by resolution of the Company’s board of directors if requested by the Sponsor, and upon five days’ advance notice prior to the applicable Termination Date, until January 29, 2024, or a total of up to twelve months after the Original Termination Date, unless the closing of the”

Constellation Acquisition Corp I shareholders approved Insider Letter Amendment Proposal at the 2023-01-27 meeting.

“The Insider Letter Amendment Proposal For Against Abstain 28,656,500 2,566,968 71,858”

Constellation Acquisition Corp I shareholders approved Extension Amendment Proposal at the 2023-01-27 meeting.

“The Extension Amendment Proposal For Against Abstain 28,656,521 2,566,947 71,858”

Constellation Acquisition Corp I amended Letter Agreement Amendment with the Sponsor, certain officers and directors of the Company, and other parties (the “Insiders”) (effective 2023-01-30).

“On January 30, 2023, the Company, the Sponsor, certain officers and directors of the Company, and other parties thereto (the “Insiders,” and together with the Sponsor, the “Letter Agreement Parties”) entered into an amendment to the Letter Agreement , dated January 26, 2021 (the “ Letter Agreement ”), to allow the Sponsor to transfer its holdings in the Company, directly or indirectly, to affiliate(s) of Antarctica Capital Partners, LLC prior to the expiration of the applicable lock-up (the “ Letter Agreement Amendment ”).”

Constellation Acquisition Corp I entered into Investment Agreement with Constellation Sponsor GmbH & Co. KG and Endurance Constellation, LLC valued at $3,000,000 (effective 2023-01-26).

“On January 26, 2023, Constellation Acquisition Corp I, a Cayman Island exempted company (the “ Company ”), entered into an Investment Agreement (the “ Investment Agreement ”) with Constellation Sponsor GmbH & Co. KG, a German limited partnership (the “ Sponsor ”), and Endurance Constellation, LLC , a Delaware limited liability company (the “ Investor ”), pursuant to which the Investor agreed to contribute to the Sponsor an aggregate amount in cash equal up to $3,000,000 (the “ Investment Contribution ”)”

Graeme Shaw was appointed as Chief Technology Officer at Constellation Acquisition Corp I.

“Graeme Shaw was appointed Chief Technology Officer”

Jarett Goldman was appointed as Chief Financial Officer at Constellation Acquisition Corp I.

“Jarett Goldman was appointed Chief Financial Officer”

Richard C. Davis was appointed as Director at Constellation Acquisition Corp I.

“On February 1, 2023, Richard C. Davis was appointed Director.”