Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Horizon Quantum Holdings Ltd.HQ · Entity 5127 | Chief Financial Officer | June 12, 2026 | September 16, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
Horizon Quantum Holdings Ltd.
Report date June 12, 2026 · Filed September 16, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Class A Ordinary SharesSEC Table I · non-derivative | Direct | 2,165 |
Ending reported balance
After 2026-09-12 transaction · row 2
2 source rows · reconciled sequenceRow 1 · 2026-09-12 · Exercise / conversion · Acquired 3,437 · Balance 3,437 F1: On September 12, 2026, 3,437 of Mr. Gould's RSU's vested. F2: On June 12, 2026 (the "Grant Date"), Mr. Gould was granted a total of 54,995 unvested restricted stock unites ("RSUs"), each representing a contingent right to receive one Class A ordinary share, with no par value ("Class A Ordinary Share"), of Horizon Quantum Holdings Ltd. (the "Company") upon vesting, for no consideration.. The RSUs granted to Mr. Gould vest in sixteen approximately equal installments on successive quarterly anniversaries of the Grant Date and are subject to Mr. Gould's continued employment with the Company through each applicable vesting date. Row 2 · 2026-09-12 · Disposition to issuer · Disposed 1,272 · Balance 2,165 F1: On September 12, 2026, 3,437 of Mr. Gould's RSU's vested. F3: The reported disposition to the Company reflects the settlement in cash of a portion of the RSUs which vested on September 12, 2026, at a price per ordinary share of $15.22, the last reported sales price of the Company's Class A Ordinary Shares on September 11, 2026. |
| Restricted Stock UnitSEC Table II · derivative / convertible security · Conversion / exercise price $0.00 | Direct | 54,995 |
Reported balance
After 2026-06-12 transaction · row 3
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 3 · 2026-06-12 · Grant · Acquired 54,995 · Balance 54,995 F2: On June 12, 2026 (the "Grant Date"), Mr. Gould was granted a total of 54,995 unvested restricted stock unites ("RSUs"), each representing a contingent right to receive one Class A ordinary share, with no par value ("Class A Ordinary Share"), of Horizon Quantum Holdings Ltd. (the "Company") upon vesting, for no consideration.. The RSUs granted to Mr. Gould vest in sixteen approximately equal installments on successive quarterly anniversaries of the Grant Date and are subject to Mr. Gould's continued employment with the Company through each applicable vesting date. |
| Restricted Stock UnitSEC Table II · derivative / convertible security · Conversion / exercise price $0.00 | Direct | 51,558 |
Reported balance
After 2026-09-12 transaction · row 4
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 4 · 2026-09-12 · Exercise / conversion · Acquired 3,437 · Balance 51,558 F2: On June 12, 2026 (the "Grant Date"), Mr. Gould was granted a total of 54,995 unvested restricted stock unites ("RSUs"), each representing a contingent right to receive one Class A ordinary share, with no par value ("Class A Ordinary Share"), of Horizon Quantum Holdings Ltd. (the "Company") upon vesting, for no consideration.. The RSUs granted to Mr. Gould vest in sixteen approximately equal installments on successive quarterly anniversaries of the Grant Date and are subject to Mr. Gould's continued employment with the Company through each applicable vesting date. F1: On September 12, 2026, 3,437 of Mr. Gould's RSU's vested. |
Filing footnotes · ownership attribution and instrument terms
F1: On September 12, 2026, 3,437 of Mr. Gould's RSU's vested.
F2: On June 12, 2026 (the "Grant Date"), Mr. Gould was granted a total of 54,995 unvested restricted stock unites ("RSUs"), each representing a contingent right to receive one Class A ordinary share, with no par value ("Class A Ordinary Share"), of Horizon Quantum Holdings Ltd. (the "Company") upon vesting, for no consideration.. The RSUs granted to Mr. Gould vest in sixteen approximately equal installments on successive quarterly anniversaries of the Grant Date and are subject to Mr. Gould's continued employment with the Company through each applicable vesting date.
F3: The reported disposition to the Company reflects the settlement in cash of a portion of the RSUs which vested on September 12, 2026, at a price per ordinary share of $15.22, the last reported sales price of the Company's Class A Ordinary Shares on September 11, 2026.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| September 12, 2026 Filed Sep 16, 2026 01:31 UTC | Horizon Quantum Holdings Ltd. HQ · Entity 5127 | Exercise / conversionRestricted Stock Unit · Derivative | 3,437 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0001213900-26-100281 · ownership.xml · derivative · entry 4 Gould Greg · CIK 0002120154 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 51,558 Underlying: Class A Ordinary Shares · 3,437 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: On June 12, 2026 (the "Grant Date"), Mr. Gould was granted a total of 54,995 unvested restricted stock unites ("RSUs"), each representing a contingent right to receive one Class A ordinary share, with no par value ("Class A Ordinary Share"), of Horizon Quantum Holdings Ltd. (the "Company") upon vesting, for no consideration.. The RSUs granted to Mr. Gould vest in sixteen approximately equal installments on successive quarterly anniversaries of the Grant Date and are subject to Mr. Gould's continued employment with the Company through each applicable vesting date. F1 · shares: On September 12, 2026, 3,437 of Mr. Gould's RSU's vested. F1 · derivative.exercise_date: On September 12, 2026, 3,437 of Mr. Gould's RSU's vested. F2 · derivative.exercise_date: On June 12, 2026 (the "Grant Date"), Mr. Gould was granted a total of 54,995 unvested restricted stock unites ("RSUs"), each representing a contingent right to receive one Class A ordinary share, with no par value ("Class A Ordinary Share"), of Horizon Quantum Holdings Ltd. (the "Company") upon vesting, for no consideration.. The RSUs granted to Mr. Gould vest in sixteen approximately equal installments on successive quarterly anniversaries of the Grant Date and are subject to Mr. Gould's continued employment with the Company through each applicable vesting date. F2 · derivative.expiration_date: On June 12, 2026 (the "Grant Date"), Mr. Gould was granted a total of 54,995 unvested restricted stock unites ("RSUs"), each representing a contingent right to receive one Class A ordinary share, with no par value ("Class A Ordinary Share"), of Horizon Quantum Holdings Ltd. (the "Company") upon vesting, for no consideration.. The RSUs granted to Mr. Gould vest in sixteen approximately equal installments on successive quarterly anniversaries of the Grant Date and are subject to Mr. Gould's continued employment with the Company through each applicable vesting date. Read SEC document |
| September 12, 2026 Filed Sep 16, 2026 01:31 UTC | Horizon Quantum Holdings Ltd. HQ · Entity 5127 | Disposition to issuerClass A Ordinary Shares | 1,272 | $15.22 | $19,359.84 |
DisclosureSEC source: 0001213900-26-100281 · ownership.xml · nonDerivative · entry 2 Gould Greg · CIK 0002120154 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 2,165 F1 · date: On September 12, 2026, 3,437 of Mr. Gould's RSU's vested. F3 · shares: The reported disposition to the Company reflects the settlement in cash of a portion of the RSUs which vested on September 12, 2026, at a price per ordinary share of $15.22, the last reported sales price of the Company's Class A Ordinary Shares on September 11, 2026. F3 · price: The reported disposition to the Company reflects the settlement in cash of a portion of the RSUs which vested on September 12, 2026, at a price per ordinary share of $15.22, the last reported sales price of the Company's Class A Ordinary Shares on September 11, 2026. Read SEC document |
| September 12, 2026 Filed Sep 16, 2026 01:31 UTC | Horizon Quantum Holdings Ltd. HQ · Entity 5127 | Exercise / conversionClass A Ordinary Shares | 3,437 | $0.00 | $0.00 |
DisclosureSEC source: 0001213900-26-100281 · ownership.xml · nonDerivative · entry 1 Gould Greg · CIK 0002120154 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 3,437 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · date: On September 12, 2026, 3,437 of Mr. Gould's RSU's vested. F1 · shares: On September 12, 2026, 3,437 of Mr. Gould's RSU's vested. F2 · price: On June 12, 2026 (the "Grant Date"), Mr. Gould was granted a total of 54,995 unvested restricted stock unites ("RSUs"), each representing a contingent right to receive one Class A ordinary share, with no par value ("Class A Ordinary Share"), of Horizon Quantum Holdings Ltd. (the "Company") upon vesting, for no consideration.. The RSUs granted to Mr. Gould vest in sixteen approximately equal installments on successive quarterly anniversaries of the Grant Date and are subject to Mr. Gould's continued employment with the Company through each applicable vesting date. Read SEC document |
| June 12, 2026 Filed Sep 16, 2026 01:31 UTC | Horizon Quantum Holdings Ltd. HQ · Entity 5127 | GrantRestricted Stock Unit · Derivative | 54,995 | $0.00 Strike: $0.00 | $0.00 |
DisclosureSEC source: 0001213900-26-100281 · ownership.xml · derivative · entry 3 Gould Greg · CIK 0002120154 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 54,995 Underlying: Class A Ordinary Shares · 54,995 shares Expires not disclosed F2 · derivative.exercise_price: On June 12, 2026 (the "Grant Date"), Mr. Gould was granted a total of 54,995 unvested restricted stock unites ("RSUs"), each representing a contingent right to receive one Class A ordinary share, with no par value ("Class A Ordinary Share"), of Horizon Quantum Holdings Ltd. (the "Company") upon vesting, for no consideration.. The RSUs granted to Mr. Gould vest in sixteen approximately equal installments on successive quarterly anniversaries of the Grant Date and are subject to Mr. Gould's continued employment with the Company through each applicable vesting date. F2 · shares: On June 12, 2026 (the "Grant Date"), Mr. Gould was granted a total of 54,995 unvested restricted stock unites ("RSUs"), each representing a contingent right to receive one Class A ordinary share, with no par value ("Class A Ordinary Share"), of Horizon Quantum Holdings Ltd. (the "Company") upon vesting, for no consideration.. The RSUs granted to Mr. Gould vest in sixteen approximately equal installments on successive quarterly anniversaries of the Grant Date and are subject to Mr. Gould's continued employment with the Company through each applicable vesting date. F2 · derivative.exercise_date: On June 12, 2026 (the "Grant Date"), Mr. Gould was granted a total of 54,995 unvested restricted stock unites ("RSUs"), each representing a contingent right to receive one Class A ordinary share, with no par value ("Class A Ordinary Share"), of Horizon Quantum Holdings Ltd. (the "Company") upon vesting, for no consideration.. The RSUs granted to Mr. Gould vest in sixteen approximately equal installments on successive quarterly anniversaries of the Grant Date and are subject to Mr. Gould's continued employment with the Company through each applicable vesting date. F2 · derivative.expiration_date: On June 12, 2026 (the "Grant Date"), Mr. Gould was granted a total of 54,995 unvested restricted stock unites ("RSUs"), each representing a contingent right to receive one Class A ordinary share, with no par value ("Class A Ordinary Share"), of Horizon Quantum Holdings Ltd. (the "Company") upon vesting, for no consideration.. The RSUs granted to Mr. Gould vest in sixteen approximately equal installments on successive quarterly anniversaries of the Grant Date and are subject to Mr. Gould's continued employment with the Company through each applicable vesting date. F2 · derivative.underlying_shares: On June 12, 2026 (the "Grant Date"), Mr. Gould was granted a total of 54,995 unvested restricted stock unites ("RSUs"), each representing a contingent right to receive one Class A ordinary share, with no par value ("Class A Ordinary Share"), of Horizon Quantum Holdings Ltd. (the "Company") upon vesting, for no consideration.. The RSUs granted to Mr. Gould vest in sixteen approximately equal installments on successive quarterly anniversaries of the Grant Date and are subject to Mr. Gould's continued employment with the Company through each applicable vesting date. Read SEC document |
| March 19, 2026 Filed Mar 25, 2026 20:10 UTC | Horizon Quantum Holdings Ltd. HQ · Entity 5127 | GrantStock Option (Right to Buy) · Derivative | 285,300 | Not disclosed Strike: $5.13 | Not disclosed |
DisclosureSEC source: 0001213900-26-034065 · ownership.xml · derivative · entry 1 Gould Greg · CIK 0002120154 · Chief Financial Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 285,300 Underlying: Class A Ordinary Shares · 694,702 shares Expires 2035-08-15 F1 · derivative.exercise_price: Each stock option is exercisable for 2.43499 Class A Ordinary Shares of Horizon Quantum Holdings Ltd. (the "Company") at a price per share of $5.13. F2 · date: Stock options received as part of the business combination (the "Business Combination") contemplated by the Business Combination Agreement, dated as of September 9, 2025 (the "BCA"), by and among Horizon Quantum Computing Pte. Ltd. ("Legacy Horizon"), dMY Squared Technology Group, Inc., the Company and certain other parties, as described in the Registration Statement on Form F-4, as amended and supplemented (File No. 333-292737), initially filed with the U.S. Securities and Exchange Commission on January 14, 2026, and declared effective on February 17, 2026. Upon the closing of the Business Combination on March 19, 2026, Mr. Gould's stock options exercisable for Legacy Horizon ordinary shares awarded by Legacy Horizon were exchanged for substitute stock option awards of the Company of an equivalent economic value, which are subject to a vesting schedule as further detailed in footnote 3. F1 · shares: Each stock option is exercisable for 2.43499 Class A Ordinary Shares of Horizon Quantum Holdings Ltd. (the "Company") at a price per share of $5.13. F4 · price: Pursuant to the BCA and as a result of the closing of the Business Combination, Mr. Gould's 285,300 Legacy Horizon stock options were exchanged for 285,300 stock options of the Company of an equivalent economic value, with an exercise price per Class A Ordinary Share of $5.13. F3 · derivative.exercise_date: The stock options held by Mr. Gould are subject to Mr. Gould's continued employment with the Company and vest quarterly in 16 equal installments, beginning on August 15, 2025. As of March 24, 2026, 35,662 stock options are fully vested and exercisable, with the remaining 249,638 stock options vesting in accordance with the forgoing schedule. F1 · derivative.underlying_shares: Each stock option is exercisable for 2.43499 Class A Ordinary Shares of Horizon Quantum Holdings Ltd. (the "Company") at a price per share of $5.13. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.