InsiderTrades

WIERENGA WENDELL

SEC CIK 1239956 · EDGAR

Buying vs selling by month open-market trades, last 24 months, all 2 companies
BoughtSold

Companies

TickerCompanyTitleHoldingBoughtSoldTradesFirstLast
CYTKCYTOKINETICS INCDir 35.6K — $1.88M 112025-10-152026-07-15
DRMADermata Therapeutics, Inc.Dir 62.4K — — 42021-08-172022-10-06

Most active insiders at CYTK, 12 months

#InsiderTitleBoughtSold
1 Blum Robert IPres, CEO, Dir —$17.08M
2 Callos AndrewEVP, Chief Commercial Off —$16.02M
3 Lee SungEVP, CFO —$5.70M
4 Malik Fady IbrahamEVP Research, Development —$4.65M
5 Kaye Edward M. MDDir —$3.21M
6 HENDERSON JOHN TDir —$2.08M
7 WIERENGA WENDELLDir —$1.88M
8 PARSHALL B LYNNEDir —$1.36M
9 Landry Robert EDir —$146.8K
10 Harrington Robert ArthurDir —$143.6K

Transactions 15

Type
Reset
X Filed Traded Ticker Company Insider Title Type Price Qty Owned ΔOwn Value
2026-07-16 16:34 2026-07-15 CYTK CYTOKINETICS INC WIERENGA WENDELL Dir A - Grant $82.62 +75 35.6K +0.2% +$6,196
D 2026-05-27 19:08 2026-05-27 CYTK CYTOKINETICS INC WIERENGA WENDELL Dir A - Grant $0.00 +2,851 35.5K +9% $0
DT 2026-05-05 16:20 2026-05-05 CYTK CYTOKINETICS INC WIERENGA WENDELL Dir M - OptEx $12.40 +4,032 36.7K +12% +$50.0K
DT 2026-05-05 16:20 2026-05-05 CYTK CYTOKINETICS INC WIERENGA WENDELL Dir S - Sale+OE $75.00 -4,032 32.6K -11% -$302.4K
2026-04-15 18:36 2026-04-15 CYTK CYTOKINETICS INC WIERENGA WENDELL Dir A - Grant $65.37 +95 32.6K +0.3% +$6,210
2026-01-16 2026-01-15 CYTK CYTOKINETICS INC WIERENGA WENDELL Dir A - Grant $63.44 +98 32.5K +0.3% +$6,217
D 2025-12-23 2025-12-22 CYTK CYTOKINETICS INC WIERENGA WENDELL Dir S - Sale+OE $66.14 -20.0K 32.4K -38% -$1.32M
D 2025-12-23 2025-12-22 CYTK CYTOKINETICS INC WIERENGA WENDELL Dir M - OptEx $7.61 +20.0K 52.4K +62% +$152.2K
D 2025-10-27 2025-10-27 CYTK CYTOKINETICS INC WIERENGA WENDELL Dir S - Sale+OE $58.68 -4,375 32.4K -12% -$256.7K
D 2025-10-27 2025-10-27 CYTK CYTOKINETICS INC WIERENGA WENDELL Dir M - OptEx $10.00 +4,375 36.8K +13% +$43.8K
2025-10-21 2025-10-15 CYTK CYTOKINETICS INC WIERENGA WENDELL Dir A - Grant $62.80 +99 32.4K +0.3% +$6,217
2022-10-07 2022-10-06 DRMA Dermata Therapeutics, Inc. WIERENGA WENDELL Dir A - Grant $0.00 +20.7K 62.4K +49% $0
2022-07-08 2022-07-07 DRMA Dermata Therapeutics, Inc. WIERENGA WENDELL Dir A - Grant $0.00 +18.1K 41.7K +77% $0
2022-04-08 2022-04-07 DRMA Dermata Therapeutics, Inc. WIERENGA WENDELL Dir A - Grant $0.00 +10.6K 15.5K +217% $0
D 2021-08-17 2021-08-17 DRMA Dermata Therapeutics, Inc. WIERENGA WENDELL Dir C - Cnv Deriv — +8,163 13.0K +167% —

Purchase Sale Sale after option exercise All abbreviations