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Thomas W. Beetham

CIK 1741382 · Chief Operating Officer · last filed 2026-03-09

Thomas W. Beetham is a Chief Operating Officer who has filed 27 SEC Form 4 insider transactions across 3 companies since 2018. The most recent filing shows the insider had shares withheld for taxes covering $92.0K of VRDN on Mar 9, 2026. Across all open-market trades the lifetime net is −$2.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $22.6M 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

$22.64M

Companies

3

Total Filings

27

Lifetime Open-Market Net

-$2.03M

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
VRDN Chief Operating Officer 13,361 $18.98 $253.6K $117.0K 5 2026-03-09
Dianthus Therapeutics, Inc. /DE/ (MGTA) Delisted See Remarks 1,244 $11.19 $13.9K -$41.1K 8 2022-12-02
KNSA EVP & Chief Legal Officer 300,000 $74.63 $22.39M -$2.11M 13 2021-03-23

Recent Filings

27 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
2026-03-09 VRDN Tax (F) −3,048 -$92.0K EDGAR
2026-03-04 VRDN Notice (144) −3,048 -$92.0K EDGAR
2026-03-04 VRDN Mixed +6,271 -$92.0K EDGAR
2025-03-04 VRDN Grant (A) — $0 EDGAR
2024-09-30 VRDN Buy (P) +5,000 $117.0K EDGAR
2023-11-01 VRDN Grant (A) — $0 EDGAR
2022-12-02 Dianthus Therapeutics, Inc. /DE/ (MGTA) Delisted Grant (A) +3,000 $2.8K EDGAR
2022-08-01 Dianthus Therapeutics, Inc. /DE/ (MGTA) Delisted Grant (A) — $0 EDGAR
2022-06-06 Dianthus Therapeutics, Inc. /DE/ (MGTA) Delisted Grant (A) +3,000 $3.0K EDGAR
2022-05-19 Dianthus Therapeutics, Inc. /DE/ (MGTA) Delisted Grant (A) — $0 EDGAR
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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.