Wendell Wierenga
CIK: 0001239956
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (17 total)
- Oct 16, 2026CYTK
CYTOKINETICS INC
Award(A)Direct97 shares at avg. $63.92$6K - Sep 1, 2026CRNX
Crinetics Pharmaceuticals, Inc.
Disposition(D)Direct5.9K shares at avg. $85.00$504K - Sep 1, 2026CRNX
Crinetics Pharmaceuticals, Inc.
Disposition(D)Direct116.1K shares at avg. $85.00$9.9M - Jul 15, 2026CYTK
CYTOKINETICS INC
Award(A)Direct75 shares at avg. $82.62$6K - Jun 18, 2026CRNX
Crinetics Pharmaceuticals, Inc.
Award(A)Direct5.9K shares- - May 27, 2026CYTK
CYTOKINETICS INC
Award(A)Direct2.9K shares- - May 5, 2026CYTK
CYTOKINETICS INC
Sale(S)Direct4K shares at avg. $75.00$302K - May 5, 2026CYTK
CYTOKINETICS INC
Exercise(M)Direct4K shares at avg. $12.40$50K - Apr 15, 2026CYTK
CYTOKINETICS INC
Award(A)Direct95 shares at avg. $65.37$6K - Jan 15, 2026CYTK
CYTOKINETICS INC
Award(A)Direct98 shares at avg. $63.44$6K - Jan 2, 2026DRMA
Dermata Therapeutics, Inc.
Award(A)DirectStock Option (Right to Buy)
2.5K shares- - Dec 22, 2025CYTK
CYTOKINETICS INC
Sale(S)Direct20K shares at avg. $66.14$1.3M - Dec 22, 2025CYTK
CYTOKINETICS INC
Exercise(M)Direct20K shares at avg. $7.61$152K - Oct 27, 2025CYTK
CYTOKINETICS INC
Sale(S)Direct4.4K shares at avg. $58.68$257K - Oct 27, 2025CYTK
CYTOKINETICS INC
Exercise(M)Direct4.4K shares at avg. $10.00$44K - Oct 15, 2025CYTK
CYTOKINETICS INC
Award(A)Direct99 shares at avg. $62.80$6K - Jan 13, 2025DRMA
Dermata Therapeutics, Inc.
Award(A)DirectStock Option (Right to Buy)
5K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Oct 16, 2026 |  CYTK CYTOKINETICS INC | Award(A) | 97 | $63.92 | $6,200 | Direct |
| Sep 1, 2026 |  CRNX Crinetics Pharmaceuticals, Inc. | Disposition(D) | 5,925 | $85.00 | $503,625 | Direct |
| Sep 1, 2026 | CRNX Crinetics Pharmaceuticals, Inc. | Disposition(D) | 116,146 | $85.00 | $9,872,410 | Direct |
| Jul 15, 2026 | CYTK CYTOKINETICS INC | Award(A) | 75 | $82.62 | $6,197 | Direct |
| Jun 18, 2026 | CRNX Crinetics Pharmaceuticals, Inc. | Award(A) | 5,925 | - | $0 | Direct |
| May 27, 2026 | CYTK CYTOKINETICS INC | Award(A) | 2,851 | - | $0 | Direct |
| May 5, 2026 | CYTK CYTOKINETICS INC | Sale(S) | 4,032 | $75.00 | $302,400 | Direct |
| May 5, 2026 | CYTK CYTOKINETICS INC | Exercise(M) | 4,032 | $12.40 | $49,997 | Direct |
| Apr 15, 2026 | CYTK CYTOKINETICS INC | Award(A) | 95 | $65.37 | $6,210 | Direct |
| Jan 15, 2026 | CYTK CYTOKINETICS INC | Award(A) | 98 | $63.44 | $6,217 | Direct |
| Jan 2, 2026 |  DRMA Dermata Therapeutics, Inc. | Award(A) Stock Option (Right to Buy) | 2,500 | - | - | Direct |
| Dec 22, 2025 | CYTK CYTOKINETICS INC | Sale(S) | 20,000 | $66.14 | $1,322,800 | Direct |
| Dec 22, 2025 | CYTK CYTOKINETICS INC | Exercise(M) | 20,000 | $7.61 | $152,200 | Direct |
| Oct 27, 2025 | CYTK CYTOKINETICS INC | Sale(S) | 4,375 | $58.68 | $256,725 | Direct |
| Oct 27, 2025 | CYTK CYTOKINETICS INC | Exercise(M) | 4,375 | $10.00 | $43,750 | Direct |
| Oct 15, 2025 | CYTK CYTOKINETICS INC | Award(A) | 99 | $62.80 | $6,217 | Direct |
| Jan 13, 2025 | DRMA Dermata Therapeutics, Inc. | Award(A) Stock Option (Right to Buy) | 5,000 | - | - | Direct |
1-17 of 17 transactions
About WIERENGA WENDELL
WIERENGA WENDELL (SEC CIK 0001239956) files insider reports with the SEC as Director of CYTOKINETICS INC (CYTK), Director of Crinetics Pharmaceuticals, Inc. (CRNX) and Director of Dermata Therapeutics, Inc. (DRMA).
Signal8 holds 13 ownership filings by WIERENGA WENDELL, all Form 4s, filed between Jan 14, 2025 and Oct 20, 2026. Those filings report 17 transactions, from Jan 13, 2025 to Oct 16, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on WIERENGA WENDELL's filings is in SOUTH SAN FRANCISCO, CA.
Recent filings by WIERENGA WENDELL
- Oct 16, 2026: Grant or award of CYTK shares (Form 4, code A).
- Sep 1, 2026: Disposition to issuer transactions of CRNX shares (2 lines, Form 4, code D).
- Jul 15, 2026: Grant or award of CYTK shares (Form 4, code A).
- Jun 18, 2026: Grant or award of CRNX shares (Form 4, code A).
- May 27, 2026: Grant or award of CYTK shares (Form 4, code A).
Other insiders filing for CYTOKINETICS INC (CYTK)
- Malik Fady Ibraham, EVP Research & Development
- Blum Robert I, President & CEO
- Wysenski Nancy, Director
- Kaye Edward M. MD, Director
- Harrington Robert Arthur, Director
- Daly James M, Director