Blumenstock Gerald M

Officer · ACLS

As of 2026-09-16, Blumenstock Gerald M has 14 Form 4 transactions on record across 1 company — 9 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: $2.1MIndirect: $0$2.1Mas of 2026-09-16
  • Direct $2.1M
  • Indirect $0
ACLSdirect19,987 sh$2.1M

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

ACLS · 14 trades
2026-06-15: Withheld for tax, 506 sh ($97K)2026-05-21: Sale, 1,161 sh ($177K)2026-05-15: Withheld for tax, 744 sh ($115K)2026-05-15: Withheld for tax, 345 sh ($54K)2026-05-15: Award / grant, 2,725 sh ($0)2026-05-15: Award / grant, 2,725 sh ($0)2026-05-14: Sale, 1,015 sh ($165K)2026-03-02: Withheld for tax, 1,121 sh ($97K)2025-12-11: Sale, 3,034 sh ($271K)2025-06-16: Withheld for tax, 506 sh ($35K)2025-05-15: Withheld for tax, 345 sh ($22K)2025-05-15: Award / grant, 6,148 sh ($0)2025-05-15: Award / grant, 6,148 sh ($0)2025-02-28: Withheld for tax, 748 sh ($41K)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-05-21ACLSSale1,161 @ $152.70$177K−5.4% of holding20,493Form 4
2026-05-14ACLSSale1,015 @ $162.31$165K−5.5% of holding17,293Form 4
2025-12-11ACLSSale3,034 @ $89.46$271K−14.0% of holding18,661Form 4
11 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-06-15ACLSWithheld for tax50619,987Form 4
2026-05-15ACLSWithheld for tax74421,999Form 4
2026-05-15ACLSWithheld for tax34521,654Form 4
2026-05-15ACLSAward / grant2,72520,018Form 4
2026-05-15ACLSAward / grant2,72522,743Form 4
2026-03-02ACLSWithheld for tax1,12117,540Form 4
2025-06-16ACLSWithheld for tax50621,695Form 4
2025-05-15ACLSWithheld for tax34522,201Form 4
2025-05-15ACLSAward / grant6,14822,546Form 4
2025-05-15ACLSAward / grant6,14816,398Form 4
2025-02-28ACLSWithheld for tax74810,250Form 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.