Tan Si-Hui’s HQ Purchase Surfaced 180 Days Later
An HQ purchase took 180 days to reach disclosure.
Tan Si-Hui, identified in the filing as Chief Science Officer, disclosed buying 55,000 shares of HQ at $2.88 each. That puts the disclosed purchase at roughly $158,400.
The trade date was March 19, 2026. The disclosure date was September 15, 2026.
That’s a 180-day gap. The STOCK Act requires members of Congress to disclose trades within 45 days, with a standard $200 penalty for late filings. Measured against that deadline, this disclosure arrived 135 days past it.
One important distinction: the supplied filing identifies Tan as a corporate officer, not as a member of Congress. The congressional deadline applies to members, so the supplied facts don’t establish that the STOCK Act governs this filing.
Source: official House/Senate financial disclosure filings
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All facts from official disclosure filings; disclosures can lag the trade by weeks. Not investment advice — decide for yourself.
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