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Allene M. Diaz

CIK 1773314 · last filed 2026-07-09

Allene M. Diaz is a corporate insider who has filed 31 SEC Form 4 insider transactions across 3 companies since 2019. The most recent filing, for IONS, was dated Jul 9, 2026. Across all open-market trades the lifetime net is −$5.4M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $203.0K 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

$203.0K

Companies

3

Total Filings

31

Lifetime Open-Market Net

-$5.39M

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
IONS Director 3,811 $53.26 $203.0K -$5.39M 15 2026-07-09
Mersana Therapeutics, Inc. (MRSN) Delisted Director 0 $29.08 $0 $0 7 2026-01-06
Allena Pharmaceuticals, Inc. (ALNA) Delisted Director — $0.07 — $0 3 2021-06-04

Recent Filings

31 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
2026-07-09 IONS Mixed — -$387.3K EDGAR
2026-07-07 IONS Notice (144) −10,111 -$863.6K EDGAR
2026-07-06 IONS Grant (A) — $0 EDGAR
2026-03-31 IONS Notice (144) −68,800 -$5.47M EDGAR
2026-03-05 IONS Mixed −14,557 -$2.75M EDGAR
2026-01-06 Mersana Therapeutics, Inc. (MRSN) Delisted Mixed −578 $0 EDGAR
2025-08-29 IONS Notice (144) −1,427 -$60.7K EDGAR
2025-08-26 IONS Sell (S) −1,427 -$60.7K EDGAR
2025-07-17 IONS Exer (M) +4,079 $0 EDGAR
2025-07-02 IONS Grant (A) — $0 EDGAR
Showing 1–10 of 31
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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.