Wendall Wierenga
CIK 1235945 · View on SEC EDGAR ↗
Insider
First SEC filing: July 17, 2018 · Latest: July 17, 2018
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 88 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
88 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| April 21, 2025 | CYTK | S | 20,000 | $38.46 | $769,200 | 24,848 Direct | -44.60% | Disposed | 101.4% (price as of 2026-08-21) |
| Dec. 16, 2024 | CYTK | S | 742 | $48.61 | $36,069 | 24,559 Direct | -2.93% | Disposed | 59.4% (price as of 2026-08-21) |
| Nov. 25, 2024 | CYTK | S | 742 | $50.00 | $37,100 | 24,559 Direct | -2.93% | Disposed | 54.9% (price as of 2026-08-21) |
| Oct. 28, 2024 | CYTK | S | 4,452 | $52.25 | $232,617 | 24,559 Direct | -15.35% | Disposed | 48.3% (price as of 2026-08-21) |
| Dec. 27, 2023 | CYTK | S 10b5-1 | 5,000 | $73.60 | $368,000 | 18,653 Direct | -21.14% | Disposed | 5.3% (price as of 2026-08-21) |
| Dec. 27, 2023 | CYTK | S 10b5-1 | 5,000 | $73.60 | $368,000 | 18,653 Direct | -21.14% | Disposed | 5.3% (price as of 2026-08-21) |
| Aug. 21, 2023 | CYTK | S | 6,020 | $32.02 | $192,760 | 18,205 Direct | -24.85% | Disposed | 141.9% (price as of 2026-08-21) |
| Feb. 6, 2023 | CYTK | S 10b5-1 | 7,000 | $45.00 | $315,000 | 12,533 Direct | -35.84% | Disposed | 72.2% (price as of 2026-08-21) |
| Sept. 1, 2022 | CYTK | S 10b5-1 | 4,166 | $52.79 | $219,923 | 12,170 Direct | -25.50% | Disposed | 46.8% (price as of 2026-08-21) |
| Dec. 27, 2021 | CYTK | S 10b5-1 | 4,166 | $44.37 | $184,845 | 6,765 Direct | -38.11% | Disposed | 74.6% (price as of 2026-08-21) |
| April 28, 2020 | CYTK | S | 6,666 | $16.00 | $106,656 | 0 Direct | -100.00% | Disposed | 384.2% (price as of 2026-08-21) |
| April 28, 2020 | CYTK | S | 3,333 | $16.00 | $53,328 | 0 Direct | -100.00% | Disposed | 384.2% (price as of 2026-08-21) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| June 11, 2025 | CRNX | Stock Option (right to buy) | Common Stock (10,350) | $32.33 | June 11, 2035 | 10,350 | Acquired |
| May 14, 2025 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock (10,880) | $30.00 | May 13, 2035 | 10,880 | Acquired |
| April 21, 2025 | CYTK | Stock Option (Right to Buy) | Common Stock (20,000) | $6.21 | May 20, 2025 | 20,000 | Disposed |
| Dec. 16, 2024 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock (742) | $7.37 | Jan. 2, 2025 | 742 | Disposed |
| Nov. 25, 2024 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock (742) | $7.37 | Jan. 2, 2025 | 742 | Disposed |
| Oct. 28, 2024 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock (4,452) | $7.37 | Jan. 2, 2025 | 4,452 | Disposed |
| June 7, 2024 | CRNX | Stock Option (right to buy) | Common Stock (12,500) | $44.71 | June 7, 2034 | 12,500 | Acquired |
| May 15, 2024 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock (3,636) | $60.50 | May 15, 2034 | 3,636 | Acquired |
| Dec. 27, 2023 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock (5,000) | $4.44 | May 21, 2024 | 5,000 | Disposed |
| Dec. 27, 2023 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock (5,000) | $4.44 | May 21, 2024 | 5,000 | Disposed |
| Aug. 21, 2023 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock (6,020) | $6.72 | Jan. 2, 2024 | 6,020 | Disposed |
| June 16, 2023 | CRNX | Stock Option (right to buy) | Common Stock (17,500) | $20.32 | June 15, 2033 | 17,500 | Acquired |
| May 10, 2023 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock (10,000) | $37.89 | May 10, 2033 | 10,000 | Acquired |
| Feb. 6, 2023 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock (7,000) | $6.72 | Jan. 2, 2024 | 7,000 | Disposed |
| Sept. 1, 2022 | CYTK | Non-Qualified Stock Option (Right to Buy) | Common Stock (4,166) | $6.78 | May 22, 2023 | 4,166 | Disposed |
| June 17, 2022 | CRNX | Stock Option (right to buy) | Common Stock (17,500) | $18.29 | June 16, 2032 | 17,500 | Acquired |
| May 10, 2022 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (10,000) | $37.89 | May 10, 2032 | 10,000 | Acquired |
| Dec. 27, 2021 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (4,166) | $5.46 | May 22, 2022 | 4,166 | Disposed |
| June 22, 2021 | CRNX | Stock Option (right to buy) | Common Stock (17,500) | $20.23 | June 21, 2031 | 17,500 | Acquired |
| May 12, 2021 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (10,000) | $24.32 | May 12, 2031 | 10,000 | Acquired |
| June 19, 2020 | CRNX | Stock Option (right to buy) | Common Stock (12,500) | $23.23 | June 18, 2030 | 12,500 | Acquired |
| May 13, 2020 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (20,000) | $21.61 | May 13, 2030 | 20,000 | Acquired |
| April 28, 2020 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (6,666) | $11.04 | Feb. 9, 2021 | 6,666 | Disposed |
| April 28, 2020 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (3,333) | $8.64 | May 18, 2021 | 3,333 | Disposed |
| April 28, 2020 | CRNX | Stock Option (right to but) | Common Stock (25,329) | $0.73 | Dec. 10, 2025 | 25,329 | Disposed |
| June 21, 2019 | CRNX | Stock Option (right to buy) | Common Stock (12,500) | $23.24 | June 20, 2029 | 12,500 | Acquired |
| May 15, 2019 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (20,000) | $10.68 | May 15, 2029 | 20,000 | Acquired |
| May 16, 2018 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (20,000) | $9.45 | May 16, 2028 | 20,000 | Acquired |
| Jan. 2, 2018 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (5,714) | $8.75 | Jan. 2, 2028 | 5,714 | Acquired |
| May 18, 2017 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (20,000) | $14.25 | May 18, 2027 | 20,000 | Acquired |
| Jan. 3, 2017 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (4,032) | $12.40 | Jan. 3, 2027 | 4,032 | Acquired |
| May 18, 2016 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (20,000) | $7.61 | May 18, 2026 | 20,000 | Acquired |
| Jan. 4, 2016 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (4,375) | $10.00 | Jan. 4, 2026 | 4,375 | Acquired |
| May 20, 2015 | CYTK | Stock Option (right to buy) | Common Stock (20,000) | $6.21 | May 20, 2025 | 20,000 | Acquired |
| Jan. 2, 2015 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (5,936) | $7.37 | Jan. 2, 2025 | 5,936 | Acquired |
| May 21, 2014 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (10,000) | $4.44 | May 21, 2024 | 10,000 | Acquired |
| Jan. 2, 2014 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (13,020) | $6.72 | Jan. 2, 2024 | 13,020 | Acquired |
| May 22, 2013 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (25,000) | $1.13 | May 22, 2023 | 25,000 | Acquired |
| May 22, 2012 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (25,000) | $0.91 | May 22, 2022 | 25,000 | Acquired |
| May 18, 2011 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (20,000) | $1.44 | May 18, 2021 | 20,000 | Acquired |
| Feb. 9, 2011 | CYTK | Non-Qualified Stock Option (right to buy) | Common Stock (40,000) | $1.84 | Feb. 9, 2021 | 40,000 | Acquired |
| Jan. 19, 2006 | NBIX | Restricted Stock Units | Common Stock (5,000) | — | — | 5,000 | Acquired |
| Jan. 19, 2006 | NBIX | Stock Option [F1] | Common Stock (20,000) | $60.95 | Jan. 19, 2013 | 20,000 | Acquired |
| Feb. 18, 2005 | NBIX | Stock Option [F1] | Common Stock (35,000) | $40.39 | Feb. 18, 2015 | 35,000 | Acquired |
| May 26, 2004 | NBIX | Stock Option [F1] | Common Stock (30,000) | $57.51 | May 26, 2014 | 30,000 | Acquired |
| Sept. 1, 2003 | NBIX | Incentive Stock Option (right to buy) [F1] | Common Stock (100,000) | $53.58 | Sept. 1, 2013 | 100,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 4 holdings
Securities held when first becoming an insider, per SEC Form 3.