Diane Dahowski
CIK 1926636 · View on SEC EDGAR ↗
Insider
First SEC filing: May 6, 2022 · Latest: May 6, 2022
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 31 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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Sept. 4, 2023 | BIO | M | 600 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-20) |
| Sept. 4, 2023 | BIO | F | 275 | $394.60 | $108,515 | 11,880 Direct | -2.26% | Disposed | -7.6% (price as of 2026-08-20) |
| Sept. 4, 2023 | BIO | M | 600 | — | — | 12,155 Direct | +5.19% | Acquired | (price as of 2026-08-20) |
| Sept. 3, 2023 | BIO | M | 495 | — | — | 495 Direct | -50.00% | Disposed | (price as of 2026-08-20) |
| Sept. 3, 2023 | BIO | F | 172 | $394.60 | $67,871 | 11,555 Direct | -1.47% | Disposed | -7.6% (price as of 2026-08-20) |
| Sept. 3, 2023 | BIO | M | 495 | — | — | 11,727 Direct | +4.41% | Acquired | (price as of 2026-08-20) |
| Sept. 2, 2023 | BIO | M | 361 | — | — | 361 Direct | -50.00% | Disposed | (price as of 2026-08-20) |
| Sept. 2, 2023 | BIO | F | 125 | $394.60 | $49,325 | 11,232 Direct | -1.10% | Disposed | -7.6% (price as of 2026-08-20) |
| Sept. 2, 2023 | BIO | M | 361 | — | — | 11,357 Direct | +3.28% | Acquired | (price as of 2026-08-20) |
| Sept. 1, 2023 | BIO | M | 329 | — | — | 659 Direct | -33.30% | Disposed | (price as of 2026-08-20) |
| Sept. 1, 2023 | BIO | M | 520 | — | — | 1,562 Direct | -24.98% | Disposed | (price as of 2026-08-20) |
| Sept. 1, 2023 | BIO | F | 114 | $394.60 | $44,984 | 10,996 Direct | -1.03% | Disposed | -7.6% (price as of 2026-08-20) |
| Sept. 1, 2023 | BIO | M | 329 | — | — | 11,110 Direct | +3.05% | Acquired | (price as of 2026-08-20) |
| Sept. 1, 2023 | BIO | F | 180 | $394.60 | $71,028 | 10,781 Direct | -1.64% | Disposed | -7.6% (price as of 2026-08-20) |
| Sept. 1, 2023 | BIO | M | 520 | — | — | 10,961 Direct | +4.98% | Acquired | (price as of 2026-08-20) |
| Sept. 5, 2022 | BIO | M | 600 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-20) |
| Sept. 5, 2022 | BIO | F | 298 | $478.32 | $142,539 | 10,384 Direct | -2.79% | Disposed | -23.8% (price as of 2026-08-20) |
| Sept. 5, 2022 | BIO | M | 600 | — | — | 10,682 Direct | +5.95% | Acquired | (price as of 2026-08-20) |
| Sept. 4, 2022 | BIO | M | 600 | — | — | 600 Direct | -50.00% | Disposed | (price as of 2026-08-20) |
| Sept. 4, 2022 | BIO | F | 298 | $478.32 | $142,539 | 10,082 Direct | -2.87% | Disposed | -23.8% (price as of 2026-08-20) |
| Sept. 4, 2022 | BIO | M | 600 | — | — | 10,380 Direct | +6.13% | Acquired | (price as of 2026-08-20) |
| Sept. 3, 2022 | BIO | M | 495 | — | — | 990 Direct | -33.33% | Disposed | (price as of 2026-08-20) |
| Sept. 3, 2022 | BIO | F | 188 | $478.32 | $89,924 | 9,780 Direct | -1.89% | Disposed | -23.8% (price as of 2026-08-20) |
| Sept. 3, 2022 | BIO | M | 495 | — | — | 9,968 Direct | +5.23% | Acquired | (price as of 2026-08-20) |
| Sept. 2, 2022 | BIO | M | 361 | — | — | 722 Direct | -33.33% | Disposed | (price as of 2026-08-20) |
| Sept. 2, 2022 | BIO | F | 125 | $478.32 | $59,790 | 9,473 Direct | -1.30% | Disposed | -23.8% (price as of 2026-08-20) |
| Sept. 2, 2022 | BIO | M | 361 | — | — | 9,598 Direct | +3.91% | Acquired | (price as of 2026-08-20) |
| Sept. 1, 2022 | BIO | M | 329 | — | — | 988 Direct | -24.98% | Disposed | (price as of 2026-08-20) |
| Sept. 1, 2022 | BIO | A | 2,082 | — | — | 2,082 Direct | — | Acquired | (price as of 2026-08-20) |
| Sept. 1, 2022 | BIO | F | 114 | $486.25 | $55,432 | 9,237 Direct | -1.22% | Disposed | -25.0% (price as of 2026-08-20) |
| Sept. 1, 2022 | BIO | M | 329 | — | — | 9,351 Direct | +3.65% | Acquired | (price as of 2026-08-20) |
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 |
|---|---|---|---|---|---|---|---|
| Sept. 4, 2023 | BIO | Restricted Stock Units | Bio-Rad A Common Stock (600) | — | — | 600 | Disposed |
| Sept. 3, 2023 | BIO | Restricted Stock Units | Bio-Rad A Common Stock (495) | — | — | 495 | Disposed |
| Sept. 2, 2023 | BIO | Restricted Stock Units | Bio-Rad A Common Stock (361) | — | — | 361 | Disposed |
| Sept. 1, 2023 | BIO | Restricted Stock Units | Bio-Rad A Common Stock (329) | — | — | 329 | Disposed |
| Sept. 1, 2023 | BIO | Restricted Stock Units | Bio-Rad A Common Stock (520) | — | — | 520 | Disposed |
| Sept. 5, 2022 | BIO | Restricted Stock Units | Bio-Rad A Common Stock (600) | — | — | 600 | Disposed |
| Sept. 4, 2022 | BIO | Restricted Stock Units | Bio-Rad A Common Stock (600) | — | — | 600 | Disposed |
| Sept. 3, 2022 | BIO | Restricted Stock Units | Bio-Rad A Common Stock (495) | — | — | 495 | Disposed |
| Sept. 2, 2022 | BIO | Restricted Stock Units | Bio-Rad A Common Stock (361) | — | — | 361 | Disposed |
| Sept. 1, 2022 | BIO | Restricted Stock Units | Bio-Rad A Common Stock (329) | — | — | 329 | Disposed |
| Sept. 1, 2022 | BIO | Restricted Stock Units | Bio-Rad A Common Stock (2,082) | — | — | 2,082 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 8 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| May 6, 2022 | BIO | Bio-Rad A Common Stock | 9,008 | Direct |
| May 6, 2022 | BIO | Restricted Stock Units→ Bio-Rad A Common Stock (600) | 600 | Direct |
| May 6, 2022 | BIO | Restricted Stock Units→ Bio-Rad A Common Stock (1,200) | 1,200 | Direct |
| May 6, 2022 | BIO | Restricted Stock Units→ Bio-Rad A Common Stock (1,485) | 1,485 | Direct |
| May 6, 2022 | BIO | Restricted Stock Units→ Bio-Rad A Common Stock (1,083) | 1,083 | Direct |
| May 6, 2022 | BIO | Restricted Stock Units→ Bio-Rad A Common Stock (1,317) | 1,317 | Direct |
| May 6, 2022 | BIO | Non-Qualified Stock Option (right to buy)→ Bio-Rad A Common Stock (1,444) | 1,444 | Direct |
| May 6, 2022 | BIO | Non-Qualified Stock Option (right to buy)→ Bio-Rad A Common Stock (1,317) | 1,317 | Direct |