Sim Brandon

Officer · ASTH

As of 2026-09-17, Sim Brandon has 8 Form 4 transactions on record across 1 company — 5 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Reconstructed holdings

Direct: $42.5MIndirect: $0$42.5Mas of 2026-09-17
  • Direct $42.5M
  • Indirect $0
ASTHdirect1,238,861 sh$42.5M

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

ASTH · 8 trades
2026-09-05: Withheld for tax, 7,163 sh ($276K)2026-06-27: Withheld for tax, 1,093 sh ($49K)2026-04-06: Award / grant, 201,056 sh ($0)2026-02-02: Option exercise, 21,334 sh ($496K)2026-02-02: Option exercise, 21,334 sh ($0)2025-03-05: Withheld for tax, 105,795 sh ($2.9M)2025-03-05: Award / grant, 145,642 sh ($0)2024-11-08: Award / grant, 34,386 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
8 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-09-05ASTHWithheld for tax7,1631,238,861Form 4
2026-06-27ASTHWithheld for tax1,0931,245,292Form 4
2026-04-06ASTHAward / grant201,0561,246,385Form 4
2026-02-02ASTHOption exercise21,3341,045,329Form 4
2026-02-02ASTHOption exercise21,3340Form 4
2025-03-05ASTHWithheld for tax105,7951,023,219Form 4
2025-03-05ASTHAward / grant145,6421,129,014Form 4
2024-11-08ASTHAward / grant34,386983,372Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.