Timothy S Ernst
Insider
First SEC filing: June 10, 2016 · Latest: June 10, 2016
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| March 8, 2024 | BIO | A | 2,357 | · | · | 2,357 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 28, 2024 | BIO | M | 2,500 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Feb. 28, 2024 | BIO | S | 2,500 | $330.55 | $826,375 | 3,397 Direct | -42.39% | Disposed | 14.9% (price as of 2026-10-05) |
| Feb. 28, 2024 | BIO | M | 2,500 | $326.15 | $815,375 | 5,897 Direct | +73.59% | Acquired | 16.5% (price as of 2026-10-05) |
| Sept. 4, 2023 | BIO | M | 500 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Sept. 4, 2023 | BIO | F | 248 | $394.60 | $97,861 | 3,384 Direct | -6.83% | Disposed | -3.7% (price as of 2026-10-05) |
| Sept. 4, 2023 | BIO | M | 500 | · | · | 3,632 Direct | +15.96% | Acquired | (price as of 2026-10-05) |
| Sept. 3, 2023 | BIO | M | 464 | · | · | 464 Direct | -50.00% | Disposed | (price as of 2026-10-05) |
| Sept. 3, 2023 | BIO | F | 231 | $394.60 | $91,153 | 3,132 Direct | -6.87% | Disposed | -3.7% (price as of 2026-10-05) |
| Sept. 3, 2023 | BIO | M | 464 | · | · | 3,363 Direct | +16.01% | Acquired | (price as of 2026-10-05) |
| Sept. 2, 2023 | BIO | M | 361 | · | · | 361 Direct | -50.00% | Disposed | (price as of 2026-10-05) |
| Sept. 2, 2023 | BIO | F | 179 | $394.60 | $70,633 | 2,899 Direct | -5.82% | Disposed | -3.7% (price as of 2026-10-05) |
| Sept. 2, 2023 | BIO | M | 361 | · | · | 3,078 Direct | +13.29% | Acquired | (price as of 2026-10-05) |
| Sept. 1, 2023 | BIO | M | 253 | · | · | 507 Direct | -33.29% | Disposed | (price as of 2026-10-05) |
| Sept. 1, 2023 | BIO | M | 347 | · | · | 1,041 Direct | -25.00% | Disposed | (price as of 2026-10-05) |
| Sept. 1, 2023 | BIO | A | 2,003 | · | · | 2,003 Direct | · | Acquired | (price as of 2026-10-05) |
| Sept. 1, 2023 | BIO | F | 126 | $394.60 | $49,720 | 2,717 Direct | -4.43% | Disposed | -3.7% (price as of 2026-10-05) |
| Sept. 1, 2023 | BIO | M | 253 | · | · | 2,843 Direct | +9.77% | Acquired | (price as of 2026-10-05) |
| Sept. 1, 2023 | BIO | F | 173 | $394.60 | $68,266 | 2,590 Direct | -6.26% | Disposed | -3.7% (price as of 2026-10-05) |
| Sept. 1, 2023 | BIO | M | 347 | · | · | 2,763 Direct | +14.36% | Acquired | (price as of 2026-10-05) |
| Aug. 30, 2023 | BIO | M | 2,350 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Aug. 30, 2023 | BIO | S | 377 | $396.44 | $149,458 | 2,416 Direct | -13.50% | Disposed | -4.2% (price as of 2026-10-05) |
| Aug. 30, 2023 | BIO | S | 1,582 | $395.76 | $626,092 | 2,793 Direct | -36.16% | Disposed | -4.0% (price as of 2026-10-05) |
| Aug. 30, 2023 | BIO | S | 391 | $394.16 | $154,117 | 4,375 Direct | -8.20% | Disposed | -3.6% (price as of 2026-10-05) |
| Aug. 30, 2023 | BIO | M | 2,350 | $215.98 | $507,553 | 4,766 Direct | +97.27% | Acquired | 75.9% (price as of 2026-10-05) |
| Aug. 23, 2023 | BIO | S | 300 | $384.69 | $115,407 | 2,416 Direct | -11.05% | Disposed | -1.3% (price as of 2026-10-05) |
| March 8, 2023 | BIO | M | 150 | · | · | 2,350 Direct | -6.00% | Disposed | (price as of 2026-10-05) |
| March 8, 2023 | BIO | M | 850 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| March 8, 2023 | BIO | S | 746 | $486.89 | $363,220 | 2,671 Direct | -21.83% | Disposed | -22.0% (price as of 2026-10-05) |
| March 8, 2023 | BIO | S | 1,000 | $486.08 | $486,080 | 3,417 Direct | -22.64% | Disposed | -21.9% (price as of 2026-10-05) |
| March 8, 2023 | BIO | M | 150 | $215.98 | $32,397 | 4,417 Direct | +3.52% | Acquired | 75.9% (price as of 2026-10-05) |
| March 8, 2023 | BIO | M | 850 | $159.32 | $135,422 | 4,267 Direct | +24.88% | Acquired | 138.4% (price as of 2026-10-05) |
| Sept. 5, 2022 | BIO | M | 500 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Sept. 5, 2022 | BIO | F | 248 | $478.32 | $118,623 | 3,405 Direct | -6.79% | Disposed | -20.6% (price as of 2026-10-05) |
| Sept. 5, 2022 | BIO | M | 500 | · | · | 3,653 Direct | +15.86% | Acquired | (price as of 2026-10-05) |
| Sept. 4, 2022 | BIO | M | 500 | · | · | 500 Direct | -50.00% | Disposed | (price as of 2026-10-05) |
| Sept. 4, 2022 | BIO | F | 248 | $478.32 | $118,623 | 3,153 Direct | -7.29% | Disposed | -20.6% (price as of 2026-10-05) |
| Sept. 4, 2022 | BIO | M | 500 | · | · | 3,401 Direct | +17.24% | Acquired | (price as of 2026-10-05) |
| Sept. 3, 2022 | BIO | M | 464 | · | · | 928 Direct | -33.33% | Disposed | (price as of 2026-10-05) |
| Sept. 3, 2022 | BIO | F | 161 | $478.32 | $77,010 | 2,901 Direct | -5.26% | Disposed | -20.6% (price as of 2026-10-05) |
| Sept. 3, 2022 | BIO | M | 464 | · | · | 3,062 Direct | +17.86% | Acquired | (price as of 2026-10-05) |
| Sept. 2, 2022 | BIO | M | 361 | · | · | 722 Direct | -33.33% | Disposed | (price as of 2026-10-05) |
| Sept. 2, 2022 | BIO | F | 125 | $478.32 | $59,790 | 2,598 Direct | -4.59% | Disposed | -20.6% (price as of 2026-10-05) |
| Sept. 2, 2022 | BIO | M | 361 | · | · | 2,723 Direct | +15.28% | Acquired | (price as of 2026-10-05) |
| Sept. 1, 2022 | BIO | M | 253 | · | · | 760 Direct | -24.98% | Disposed | (price as of 2026-10-05) |
| Sept. 1, 2022 | BIO | A | 1,388 | · | · | 1,388 Direct | · | Acquired | (price as of 2026-10-05) |
| Sept. 1, 2022 | BIO | F | 88 | $486.25 | $42,790 | 2,362 Direct | -3.59% | Disposed | -21.9% (price as of 2026-10-05) |
| Sept. 1, 2022 | BIO | M | 253 | · | · | 2,450 Direct | +11.52% | Acquired | (price as of 2026-10-05) |
| Sept. 7, 2021 | BIO | M | 500 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Sept. 7, 2021 | BIO | F | 248 | $806.32 | $199,967 | 2,153 Direct | -10.33% | Disposed | -52.9% (price as of 2026-10-05) |
| Sept. 7, 2021 | BIO | M | 500 | · | · | 2,401 Direct | +26.30% | Acquired | (price as of 2026-10-05) |
| Sept. 5, 2021 | BIO | M | 500 | · | · | 500 Direct | -50.00% | Disposed | (price as of 2026-10-05) |
| Sept. 5, 2021 | BIO | F | 248 | $819.70 | $203,286 | 1,901 Direct | -11.54% | Disposed | -53.7% (price as of 2026-10-05) |
| Sept. 5, 2021 | BIO | M | 500 | · | · | 2,149 Direct | +30.32% | Acquired | (price as of 2026-10-05) |
| Sept. 4, 2021 | BIO | M | 500 | · | · | 1,000 Direct | -33.33% | Disposed | (price as of 2026-10-05) |
| Sept. 4, 2021 | BIO | F | 248 | $819.70 | $203,286 | 1,649 Direct | -13.07% | Disposed | -53.7% (price as of 2026-10-05) |
| Sept. 4, 2021 | BIO | M | 500 | · | · | 1,897 Direct | +35.79% | Acquired | (price as of 2026-10-05) |
| Sept. 3, 2021 | BIO | M | 464 | · | · | 1,392 Direct | -25.00% | Disposed | (price as of 2026-10-05) |
| Sept. 3, 2021 | BIO | F | 222 | $819.70 | $181,973 | 1,397 Direct | -13.71% | Disposed | -53.7% (price as of 2026-10-05) |
| Sept. 3, 2021 | BIO | M | 464 | · | · | 1,619 Direct | +40.17% | Acquired | (price as of 2026-10-05) |
| Sept. 2, 2021 | BIO | M | 361 | · | · | 1,083 Direct | -25.00% | Disposed | (price as of 2026-10-05) |
| Sept. 2, 2021 | BIO | F | 125 | $825.77 | $103,221 | 1,155 Direct | -9.77% | Disposed | -54.0% (price as of 2026-10-05) |
| Sept. 2, 2021 | BIO | M | 361 | · | · | 1,280 Direct | +39.28% | Acquired | (price as of 2026-10-05) |
| Sept. 1, 2021 | BIO | A | 1,013 | · | · | 1,013 Direct | · | Acquired | (price as of 2026-10-05) |
| Sept. 1, 2021 | BIO | A | 1,013 | · | · | 1,013 Direct | · | Acquired | (price as of 2026-10-05) |
| Aug. 4, 2021 | BIO | S | 327 | $760.26 | $248,605 | 919 Direct | -26.24% | Disposed | -50.0% (price as of 2026-10-05) |
| Feb. 19, 2021 | BIO | M | 400 | · | · | 850 Direct | -32.00% | Disposed | (price as of 2026-10-05) |
| Feb. 19, 2021 | BIO | S | 196 | $640.17 | $125,473 | 1,220 Direct | -13.84% | Disposed | -40.7% (price as of 2026-10-05) |
| Feb. 19, 2021 | BIO | S | 327 | $640.92 | $209,581 | 1,416 Direct | -18.76% | Disposed | -40.7% (price as of 2026-10-05) |
| Feb. 19, 2021 | BIO | S | 400 | $640.94 | $256,376 | 1,743 Direct | -18.67% | Disposed | -40.7% (price as of 2026-10-05) |
| Feb. 19, 2021 | BIO | M | 400 | $159.32 | $63,728 | 2,143 Direct | +22.95% | Acquired | 138.4% (price as of 2026-10-05) |
| Sept. 7, 2020 | BIO | M | 500 | · | · | 1,960 Direct | +34.25% | Acquired | (price as of 2026-10-05) |
| Sept. 7, 2020 | BIO | F | 237 | $484.23 | $114,763 | 1,723 Direct | -12.09% | Disposed | -21.6% (price as of 2026-10-05) |
| Sept. 7, 2020 | BIO | M | 500 | · | · | 500 Direct | -50.00% | Disposed | (price as of 2026-10-05) |
| Sept. 5, 2020 | BIO | M | 500 | · | · | 1,633 Direct | +44.13% | Acquired | (price as of 2026-10-05) |
| Sept. 5, 2020 | BIO | F | 173 | $484.23 | $83,772 | 1,460 Direct | -10.59% | Disposed | -21.6% (price as of 2026-10-05) |
| Sept. 5, 2020 | BIO | M | 500 | · | · | 1,000 Direct | -33.33% | Disposed | (price as of 2026-10-05) |
| Sept. 4, 2020 | BIO | M | 500 | · | · | 1,306 Direct | +62.03% | Acquired | (price as of 2026-10-05) |
| Sept. 4, 2020 | BIO | F | 173 | $484.23 | $83,772 | 1,133 Direct | -13.25% | Disposed | -21.6% (price as of 2026-10-05) |
| Sept. 4, 2020 | BIO | M | 500 | · | · | 1,500 Direct | -25.00% | Disposed | (price as of 2026-10-05) |
| Sept. 3, 2020 | BIO | M | 464 | · | · | 967 Direct | +92.25% | Acquired | (price as of 2026-10-05) |
| Sept. 3, 2020 | BIO | F | 161 | $494.24 | $79,573 | 806 Direct | -16.65% | Disposed | -23.2% (price as of 2026-10-05) |
| Sept. 3, 2020 | BIO | M | 464 | · | · | 1,856 Direct | -20.00% | Disposed | (price as of 2026-10-05) |
| Sept. 2, 2020 | BIO | A | 1,444 | · | · | 1,444 Direct | · | Acquired | (price as of 2026-10-05) |
| Sept. 2, 2020 | BIO | A | 1,444 | · | · | 1,444 Direct | · | Acquired | (price as of 2026-10-05) |
| Dec. 4, 2019 | BIO | M | 1,250 | $159.32 | $199,150 | 2,362 Direct | +112.41% | Acquired | 138.4% (price as of 2026-10-05) |
| Dec. 4, 2019 | BIO | S | 1,250 | $370.11 | $462,638 | 1,112 Direct | -52.92% | Disposed | 2.6% (price as of 2026-10-05) |
| Dec. 4, 2019 | BIO | S | 656 | $370.12 | $242,799 | 456 Direct | -58.99% | Disposed | 2.6% (price as of 2026-10-05) |
| Dec. 4, 2019 | BIO | M | 1,250 | · | · | 1,250 Direct | -50.00% | Disposed | (price as of 2026-10-05) |
| Sept. 7, 2019 | BIO | M | 500 | · | · | 1,257 Direct | +66.05% | Acquired | (price as of 2026-10-05) |
| Sept. 7, 2019 | BIO | F | 173 | $335.59 | $58,057 | 1,084 Direct | -13.76% | Disposed | 13.2% (price as of 2026-10-05) |
| Sept. 7, 2019 | BIO | M | 500 | · | · | 1,000 Direct | -33.33% | Disposed | (price as of 2026-10-05) |
| Sept. 5, 2019 | BIO | M | 500 | · | · | 930 Direct | +116.28% | Acquired | (price as of 2026-10-05) |
| Sept. 5, 2019 | BIO | F | 173 | $339.48 | $58,730 | 757 Direct | -18.60% | Disposed | 11.9% (price as of 2026-10-05) |
| Sept. 5, 2019 | BIO | M | 500 | · | · | 1,500 Direct | -25.00% | Disposed | (price as of 2026-10-05) |
| Sept. 4, 2019 | BIO | M | 500 | · | · | 603 Direct | +485.44% | Acquired | (price as of 2026-10-05) |
| Sept. 4, 2019 | BIO | F | 173 | $335.20 | $57,990 | 430 Direct | -28.69% | Disposed | 13.3% (price as of 2026-10-05) |
| Sept. 4, 2019 | BIO | M | 500 | · | · | 2,000 Direct | -20.00% | Disposed | (price as of 2026-10-05) |
| Sept. 3, 2019 | BIO | A | 2,320 | · | · | 2,320 Direct | · | Acquired | (price as of 2026-10-05) |
| Sept. 3, 2019 | BIO | A | 2,320 | · | · | 2,320 Direct | · | Acquired | (price as of 2026-10-05) |
Showing latest 100 of 119 transactions
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 |
|---|---|---|---|---|---|---|---|
| March 8, 2024 | BIO | Non-Qualified Stock Option (right to buy) | Bio-Rad A Common Stock | $343.76 | March 8, 2034 | 2,357 | Acquired |
| Feb. 28, 2024 | BIO | Non-Qualified Stock Option (right to buy) | Bio-Rad A Common Stock | $326.15 | Sept. 4, 2028 | 2,500 | Disposed |
| Sept. 4, 2023 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 500 | Disposed |
| Sept. 3, 2023 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 464 | Disposed |
| Sept. 2, 2023 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 361 | Disposed |
| Sept. 1, 2023 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 253 | Disposed |
| Sept. 1, 2023 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 347 | Disposed |
| Sept. 1, 2023 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 2,003 | Acquired |
| Aug. 30, 2023 | BIO | Non-Qualified Stock Option (right to buy) | Bio-Rad A Common Stock | $215.98 | Sept. 5, 2027 | 2,350 | Disposed |
| March 8, 2023 | BIO | Non-Qualified Stock Option (right to buy) | Bio-Rad A Common Stock | $215.98 | Sept. 5, 2027 | 150 | Disposed |
| March 8, 2023 | BIO | Non-Qualified Stock Option (right to buy) | Bio-Rad A Common Stock | $159.32 | Sept. 7, 2026 | 850 | Disposed |
| Sept. 5, 2022 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 500 | Disposed |
| Sept. 4, 2022 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 500 | Disposed |
| Sept. 3, 2022 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 464 | Disposed |
| Sept. 2, 2022 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 361 | Disposed |
| Sept. 1, 2022 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 253 | Disposed |
| Sept. 1, 2022 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 1,388 | Acquired |
| Sept. 7, 2021 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 500 | Disposed |
| Sept. 5, 2021 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 500 | Disposed |
| Sept. 4, 2021 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 500 | Disposed |
| Sept. 3, 2021 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 464 | Disposed |
| Sept. 2, 2021 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 361 | Disposed |
| Sept. 1, 2021 | BIO | Non-Qualified Stock Option (right to buy) | Bio-Rad A Common Stock | $814.95 | Sept. 1, 2031 | 1,013 | Acquired |
| Sept. 1, 2021 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 1,013 | Acquired |
| Feb. 19, 2021 | BIO | Non-Qualified Stock Option (right to buy) | Bio-Rad A Common Stock | $159.32 | Sept. 7, 2026 | 400 | Disposed |
| Sept. 7, 2020 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 500 | Disposed |
| Sept. 5, 2020 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 500 | Disposed |
| Sept. 4, 2020 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 500 | Disposed |
| Sept. 3, 2020 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 464 | Disposed |
| Sept. 2, 2020 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 1,444 | Acquired |
| Sept. 2, 2020 | BIO | Non-Qualified Stock Option (right to buy) | Bio-Rad A Common Stock | $524.30 | Sept. 2, 2030 | 1,444 | Acquired |
| Dec. 4, 2019 | BIO | Non-Qualified Stock Option (right to buy) | Bio-Rad A Common Stock | $159.32 | Sept. 7, 2026 | 1,250 | Disposed |
| Sept. 7, 2019 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 500 | Disposed |
| Sept. 5, 2019 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 500 | Disposed |
| Sept. 4, 2019 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 500 | Disposed |
| Sept. 3, 2019 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 2,320 | Acquired |
| Sept. 3, 2019 | BIO | Non-Qualified Stock Option (right to buy) | Bio-Rad A Common Stock | $333.34 | Sept. 3, 2029 | 2,320 | Acquired |
| Sept. 7, 2018 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 500 | Disposed |
| Sept. 5, 2018 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 500 | Disposed |
| Sept. 4, 2018 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 2,500 | Acquired |
| Sept. 4, 2018 | BIO | Non-Qualified Stock Option (right to buy) | Bio-Rad A Common Stock | $326.15 | Sept. 4, 2028 | 2,500 | Acquired |
| Sept. 7, 2017 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 500 | Disposed |
| Sept. 5, 2017 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 2,500 | Acquired |
| Sept. 5, 2017 | BIO | Non-Qualified Stock Option (right to buy) | Bio-Rad A Common Stock | $215.98 | Sept. 5, 2027 | 2,500 | Acquired |
| Sept. 7, 2016 | BIO | Restricted Stock Units | Bio-Rad A Common Stock | · | · | 2,500 | Acquired |
| Sept. 7, 2016 | BIO | Non-Qualified Stock Option (right to buy) | Bio-Rad A Common Stock | $159.32 | Sept. 7, 2026 | 2,500 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 1 holding
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| June 10, 2016 | BIO | No Securities benefically owned | 0 | Direct |