Transaction · 0001213900-26-100280
HQHorizon Quantum Holdings Ltd.
Tan Si-Hui
Tan Si-Hui, CSO, reported a transaction classified as grant at Horizon Quantum Holdings Ltd. involving 3600.000000 shares for an estimated $0.00. Reported holdings after the transaction were 3600.000000 shares. A 10b5-1 reference was not detected in the stored filing text.
grantSEC transaction code ACSO
- Trade date
- Aug 20, 2026
- Filing date
- Sep 16, 2026
How reported position traded is calculated
Calculated only for code-P purchases and code-S sales.
Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.
Filing warnings
Notes recorded with this filingdelayed filingThe filing was reported 27 calendar days after the transaction date.
HQ price since this filing
Daily closing prices, with the filing date and available return windowsHQ · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago1w ago1d ago
Returns since7d +9.7%30d +2.8%90d180d1y
Transaction facts
Stored Form 4 columns with their raw values
- Type
- grant Code A
- Identifier
- 0001213900-26-100280 Class A Ordinary Shares
- Transaction date
- Aug 20, 2026 Filed Sep 16, 2026, 01:31 AM · 27d delay
- Shares
- 3,600 sh $0.00 per share
- Estimated value
- $0 Computed from shares × price
- Holdings after
- 3,600 sh Indirect · By Spouse
Filing signal explanations
Badges describe filing facts only — not predictions.
Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Delayed Filing Large Holdings Increase
Filing-only score
-28 points
Compact filing score computed from stored Form 4 facts. Version v1.
Low filing signal
This filing has a meaningfully negative filing-only score. It is likely less useful as a positive insider-activity signal.
How this score is calculated
- grant_or_award-22 points
transaction_code = A
Grant or award transactions are scheduled compensation, not discretionary. - delayed_filing-6 points
reporting_delay_days = 27
Filing delay exceeds the configured threshold.
Signed filing-only points, not a probability or expected return. Version v1.
Reported relationships & other filings
Form 4 relationship flags and nearby filing context
Reported roles
Chief Science Officer
Officer YesDirector No10% NoOther No
Footnotes & amended
- F1
On August 20, 2026 (the "August Grant Date"), Dr. Tan's spouse was granted a total of unvested 3,600 RSUs. The RSUs granted to Dr. Tan's spouse are subject to his continued employment with the Company…
- F2
Each restricted stock unit ("RSU") represents 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") u…
- F3
On September 12, 2026, 5,728 of Dr. Tan's RSU's vested.
- F4
On June 12, 2026 (the "June Grant Date"), Dr. Tan was granted a total of 91,659 unvested RSUs. The RSUs granted to Dr. Tan vest in sixteen approximately equal installments on successive quarterly anni…
- F5
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 pr…
- F6
Each stock option has an exercise price of $2.88 and is exercisable for approximately 2.43499 Class A Ordinary Shares of the Company. In aggregate, Dr. Tan's spouse's stock options, once fully vested,…
- F7
Of the 55,000 stock options, 37,811 stock options are currently fully vested and exercisable. The remaining stock options vest in five approximately equal quarterly installments beginning on November…
- F8
As a result of the closing of the Company's business combination on March 19, 2026, Dr. Tan's spouse's 55,000 Legacy Horizon stock options were exchanged for 55,000 stock options of the Company of an…
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