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Derek D'Antilio

CIK 1904082 · EVP, CFO & Treasurer · last filed 2026-05-19

Derek D'Antilio is an EVP, CFO & Treasurer who has filed 17 SEC Form 4 insider transactions across 1 company since 2022. The most recent filing shows the insider had shares withheld for taxes covering $1.6M of ALGM on May 19, 2026. Across all open-market trades the lifetime net is +$50.0K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $8.7M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$8.74M

Companies

1

Total Filings

17

Lifetime Open-Market Net

$50.0K

Filer Profile

Reported Address
C/O ALLEGRO MICROSYSTEMS, INC.
955 PERIMETER ROAD
MANCHESTER, NH 03103
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
ALGM EVP, CFO & Treasurer 238,813 $36.61 $8.74M $50.0K 17 2026-05-19

Recent Filings

17 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-05-19 ALGM Tax (F) −37,840 -$1.63M EDGAR
2026-05-15 ALGM Grant (A) +59,877 $0 EDGAR
2026-03-03 ALGM Tax (F) −9,995 -$364.5K EDGAR
2026-02-18 ALGM Tax (F) −17,808 -$754.7K EDGAR
2025-05-19 ALGM Mixed +35,187 -$822.9K EDGAR
2025-05-14 ALGM Grant (A) +21,295 $0 EDGAR
2025-03-03 ALGM Grant (A) +20,671 $0 EDGAR
2024-06-13 ALGM Grant (A) +34,495 $0 EDGAR
2024-05-17 ALGM Mixed +757 -$371.7K EDGAR
2024-02-15 ALGM Tax (F) −10,725 -$325.4K EDGAR
Showing 1–10 of 17
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.