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David S Tierney

CIK 1292636 · Pres and CEO · last filed 2026-07-17

David S Tierney is a Pres and CEO who has filed 96 SEC Form 4 insider transactions across 7 companies since 2007. The most recent filing shows the insider disposed of $12.1M of CPRX on Jul 17, 2026. Across all open-market trades the lifetime net is −$2.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $172.2K 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

$172.2K

Companies

7

Total Filings

96

Lifetime Open-Market Net

-$2.81M

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
CATALYST PHARMACEUTICALS, INC. (CPRX) Delisted Director 0 $31.49 $0 -$2.94M 49 2026-07-17
ZVRA Director 10,835 $11.74 $127.2K $20.7K 1 2023-03-13
ZEVRA THERAPEUTICS, INC. (KMPH) Delisted Director 5,835 $5.81 $33.9K $90.1K 15 2022-06-30
Timber Pharmaceuticals, Inc. (BPMX) Delisted Pres and CEO 625,000 — — $20.2K 3 2019-06-14
NEXM Director 17,863 $2.52 $45.0K $0 12 2009-10-19
BIOJECT MEDICAL TECHNOLOGIES INC (BJCT) Delisted Director 6,000 — — $0 6 2008-06-16
Valera Pharmaceuticals Inc (VLRX) Delisted President and CEO 0 — — $0 2 2007-04-18

Recent Filings

96 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
2026-07-17 CATALYST PHARMACEUTICALS, INC. (CPRX) Delisted Disp (D) −383,314 -$12.07M EDGAR
2025-12-30 CATALYST PHARMACEUTICALS, INC. (CPRX) Delisted Exer (M) +1,334 $0 EDGAR
2025-12-10 CATALYST PHARMACEUTICALS, INC. (CPRX) Delisted Exer (M) +1,413 $0 EDGAR
2025-11-24 CATALYST PHARMACEUTICALS, INC. (CPRX) Delisted Mixed +947 $0 EDGAR
2025-08-28 CATALYST PHARMACEUTICALS, INC. (CPRX) Delisted Mixed +24,000 -$413.2K EDGAR
2025-08-27 CATALYST PHARMACEUTICALS, INC. (CPRX) Delisted Notice (144) −26,000 -$525.1K EDGAR
2025-02-19 CATALYST PHARMACEUTICALS, INC. (CPRX) Delisted Exer (M) +4,000 $0 EDGAR
2024-12-31 CATALYST PHARMACEUTICALS, INC. (CPRX) Delisted Exer (M) +1,333 $0 EDGAR
2024-12-11 CATALYST PHARMACEUTICALS, INC. (CPRX) Delisted Exer (M) +1,413 $0 EDGAR
2024-11-25 CATALYST PHARMACEUTICALS, INC. (CPRX) Delisted Grant (A) — $0 EDGAR
Showing 1–10 of 96
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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.