© 2026 Stocks Telegraph All rights reserved.
Most stock quote data provided by Financial Modeling Prep
Making an investment decision in the stock market involves a certain amount of risk, so it's important to thoroughly review a company's stock before making any decisions. Stock float, number of short positions and outstanding shares are among the many factors an investor should take into account.
Investors cannot turn a blind eye to insiders as well as institutional ownership. They need to follow insider trades to determine the direction the stock is likely to take.
About 0.06% of BIO-B shares are held by financial institutions. CSS LLC/IL is the top corporate investor, holding 1.09K shares valued at $309.01K. A 0% stake in Bio-Rad Laboratories, Inc. is owned by the company. UBS GROUP AG owns 0 shares valued at -, which translates its holding of 0% of the stake in the company.
| Date | Holder | % Stake | Shares Held | Total Value ($) | Shares | % Change in Portfolio |
|---|---|---|---|---|---|---|
| Sep 30, 2025 | CSS LLC/IL | 0% | 1.09K | 309.01K | 0 | 0 |
| Sep 30, 2025 | UBS GROUP AG | 0% | 0 | - | -3 | -100.00% |
| Sep 30, 2025 | WHITTIER TRUST CO | 0% | 160 | 48.02K | 0 | 0 |
| Sep 30, 2025 | WELLS FARGO & COMPANY/MN | 0% | 170 | 48.43K | 0 | 0 |
| Sep 30, 2025 | MORGAN STANLEY | 0% | 712 | 195.42K | 0 | 0 |
| Sep 30, 2025 | COLONY GROUP, LLC | 0% | 760 | 208.6K | 760 | +100.00% |
| Jun 30, 2025 | UBS GROUP AG | 0% | 3 | 716 | 2 | +200.00% |
| Jun 30, 2025 | WHITTIER TRUST CO | 0% | 160 | 40.01K | 0 | 0 |
| Jun 30, 2025 | MORGAN STANLEY | 0% | 712 | 169.89K | 0 | 0 |
| Jun 30, 2025 | CSS LLC/IL | 0% | 1.09K | 268.6K | 0 | 0 |
| Jun 30, 2025 | WELLS FARGO & COMPANY/MN | 0% | 170 | 41.19K | 0 | 0 |
| Mar 31, 2025 | UBS GROUP AG | 0% | 1 | 242 | 0 | 0 |
| Mar 31, 2025 | MORGAN STANLEY | 0% | 712 | 172.3K | 0 | 0 |
| Mar 31, 2025 | WELLS FARGO & COMPANY/MN | 0% | 170 | 41.14K | 0 | 0 |
| Mar 31, 2025 | WHITTIER TRUST CO | 0% | 160 | 38.72K | 0 | 0 |
| Mar 31, 2025 | JONES FINANCIAL COMPANIES LLLP | 0% | 0 | - | -38 | -100.00% |
| Mar 31, 2025 | ITAU UNIBANCO HOLDING S.A. | 0% | 0 | - | -127 | -100.00% |
| Mar 31, 2025 | COLONY GROUP, LLC | 0% | 0 | - | -760 | -100.00% |
| Mar 31, 2025 | CSS LLC/IL | 0% | 1.09K | 265.97K | -249 | -18.57% |
| Mar 31, 2024 | JNBA FINANCIAL ADVISORS | 0% | 2 | 682 | 0 | 0 |
| Mar 31, 2024 | WHITTIER TRUST CO | 0% | 160 | 52.26K | 0 | 0 |
| Mar 31, 2024 | BUCKINGHAM STRATEGIC WEALTH, LLC | 0% | 760 | 258.88K | 0 | 0 |
| Mar 31, 2024 | CSS LLC/IL | 0.01% | 1.81K | 624.99K | -4 | -0.22% |
| Mar 31, 2024 | JONES FINANCIAL COMPANIES LLLP | 0% | 33 | 11.47K | 33 | +100.00% |
| Dec 31, 2023 | CSS LLC/IL | 0.01% | 1.81K | 584.75K | -36 | -1.95% |
| Dec 31, 2023 | WHITTIER TRUST CO | 0% | 160 | 50.53K | 0 | 0 |
| Dec 31, 2023 | MORGAN STANLEY | 0% | 724 | 230.49K | 0 | 0 |
| Dec 31, 2023 | WELLS FARGO & COMPANY/MN | 0% | 170 | 54.51K | 0 | 0 |
| Dec 31, 2023 | BUCKINGHAM STRATEGIC WEALTH, LLC | 0% | 760 | 241.95K | 0 | 0 |
| Dec 31, 2023 | ADVISOR GROUP HOLDINGS, INC. | 0% | 0 | - | -50 | -100.00% |
| Dec 31, 2023 | RENAISSANCE TECHNOLOGIES LLC | 0% | 0 | - | -1.9K | -100.00% |
| Dec 31, 2023 | JNBA FINANCIAL ADVISORS | 0% | 2 | 637 | 0 | 0 |
Among the BIO-B insiders holding of 98.05% of the stake in company, GOETZ JOHN, EVP, Chief Operating Officer, holds the largest shares of 61.17K. MAGNI GIOVANNI, EVP, Chief Strategy Officer, is the second largest BIO-B insider with ownership of 20.74K shares. HERTIA JOHN, Executive Vice President, stands third with possession of 18.73K shares of that stake.
| Insiders | Designation | Shares Held |
|---|---|---|
| GOETZ JOHN | EVP, Chief Operating Officer | 61.17K |
| MAGNI GIOVANNI | EVP, Chief Strategy Officer | 20.74K |
| HERTIA JOHN | Executive Vice President | 18.73K |
| CROWLEY MICHAEL | EVP, GBL Commercial Operations | 6.94K |
| TSINGOS CHRISTINE A | EVP and CFO | 6.68K |
| TUMOLO ANNETTE | Executive Vice President | 4.59K |
| HUTTON RONALD W | Vice President and Treasurer | 4.14K |
| ERNST TIMOTHY S | EVP, General Counsel & Sec | 2.42K |
| WRIGHT DARA | EVP, President, CDG | 1.5K |
| LAST ANDREW J. | EVP, Chief Operating Officer | 1.28K |
| HALL SHANNON | Executive Vice President | 565 |
| HINCKLEY GREGORY K | director | 500 |
| DASKAL ILAN | EVP, Chief Financial Officer | 9 |
| RAMALINGAM AJIT | SVP, Chief Accounting Officer | 0 |
| STARK JAMES R | VP, Corporate Controller | 0 |
| Date | Insider | Type | Cost | Shares | Value ($) | Shares Total |
|---|---|---|---|---|---|---|
| Dec 12, 2023 | WRIGHT DARA | SALE | 299.16 | 1.2K | 358.99K | 1.5K |
| Nov 28, 2023 | CROWLEY MICHAEL | SALE | 305.10 | 642 | 195.87K | 6.94K |
| Aug 30, 2023 | ERNST TIMOTHY S | SALE | 396.44 | 377 | 149.46K | 2.42K |
| Aug 23, 2023 | ERNST TIMOTHY S | SALE | 384.69 | 300 | 115.41K | 2.42K |
| Jun 15, 2023 | CROWLEY MICHAEL | SALE | 379.39 | 500 | 189.7K | 6.04K |
| Jun 06, 2023 | RAMALINGAM AJIT | SALE | 368.28 | 181 | 66.66K | 0 |
| Mar 08, 2023 | ERNST TIMOTHY S | SALE | 486.89 | 746 | 363.22K | 2.67K |
| Nov 10, 2022 | RAMALINGAM AJIT | SALE | 423.61 | 0 | 161.35 | 0 |
| Nov 12, 2021 | TUMOLO ANNETTE | SALE | 750.05 | 4.8K | 3.6M | 4.59K |
| Nov 11, 2021 | TUMOLO ANNETTE | SALE | 750.00 | 500 | 375K | 4.59K |
| Sep 03, 2021 | DASKAL ILAN | SALE | 820.06 | 270 | 221.42K | 9 |
| Sep 02, 2021 | DASKAL ILAN | SALE | 828.01 | 100 | 82.8K | 7 |
| Sep 01, 2021 | LAST ANDREW J. | SALE | 814.09 | 599 | 487.64K | 1.28K |
| Aug 26, 2021 | TUMOLO ANNETTE | SALE | 792.58 | 600 | 475.55K | 3.1K |
| Aug 09, 2021 | CROWLEY MICHAEL | SALE | 755.72 | 430 | 324.96K | 3.67K |
| Aug 04, 2021 | ERNST TIMOTHY S | SALE | 760.26 | 327 | 248.61K | 919 |
| Aug 04, 2021 | DASKAL ILAN | SALE | 753.32 | 489 | 368.37K | 7 |
| Feb 19, 2021 | ERNST TIMOTHY S | SALE | 640.17 | 196 | 125.54K | 1.22K |
| Dec 15, 2020 | CROWLEY MICHAEL | SALE | 580.67 | 374 | 217.17K | 3.67K |
| Nov 06, 2020 | TUMOLO ANNETTE | SALE | 641.53 | 246 | 157.82K | 4.12K |
| Aug 19, 2020 | MAGNI GIOVANNI | SALE | 521.86 | 339 | 176.91K | 20.74K |
| Jun 01, 2020 | CROWLEY MICHAEL | SALE | 485.40 | 1.5K | 728.1K | 2.31K |
| May 13, 2020 | HUTTON RONALD W | SALE | 457.35 | 443 | 202.61K | 4.14K |
| Dec 04, 2019 | ERNST TIMOTHY S | SALE | 370.12 | 656 | 242.8K | 456 |
| Nov 11, 2019 | STARK JAMES R | SALE | 351.45 | 848 | 298.03K | 0 |
| Sep 12, 2019 | TUMOLO ANNETTE | SALE | 330.00 | 522 | 172.26K | 2.41K |
| Sep 12, 2019 | HERTIA JOHN | SALE | 329.00 | 41 | 13.49K | 18.73K |
| Sep 09, 2019 | HERTIA JOHN | SALE | 336.47 | 444 | 149.39K | 17.76K |
| Sep 06, 2019 | HERTIA JOHN | SALE | 340.00 | 100 | 34K | 17.3K |
| Sep 04, 2019 | CROWLEY MICHAEL | SALE | 333.08 | 1.09K | 362.72K | 2.01K |
| Aug 14, 2019 | CROWLEY MICHAEL | SALE | 320.00 | 325 | 104K | 3.1K |
| Aug 14, 2019 | ERNST TIMOTHY S | SALE | 320.00 | 310 | 99.2K | 103 |
| May 16, 2019 | ERNST TIMOTHY S | SALE | 299.31 | 309 | 92.49K | 390 |
| May 15, 2019 | ERNST TIMOTHY S | SALE | 290.00 | 345 | 100.05K | 891 |
| Dec 14, 2018 | TSINGOS CHRISTINE A | SALE | 248.00 | 1.41K | 349.93K | 6.68K |
| Dec 14, 2018 | CROWLEY MICHAEL | SALE | 248.03 | 392 | 97.23K | 3.43K |
| Dec 12, 2018 | STARK JAMES R | SALE | 254.77 | 848 | 216.04K | 0 |
| Jun 13, 2018 | CROWLEY MICHAEL | SALE | 303.42 | 350 | 106.2K | 2.14K |
| Dec 14, 2017 | TSINGOS CHRISTINE A | SALE | 249.40 | 4.98K | 1.24M | 6.68K |
| Dec 04, 2017 | CROWLEY MICHAEL | SALE | 258.39 | 1K | 258.39K | 2.49K |
| Nov 30, 2017 | STARK JAMES R | SALE | 270.51 | 746 | 201.8K | 0 |
| Nov 14, 2017 | MAGNI GIOVANNI | SALE | 253.01 | 2.4K | 607.23K | 9.25K |
| Sep 13, 2017 | HALL SHANNON | SALE | 221.20 | 1.25K | 275.39K | 565 |
| Aug 11, 2017 | CROWLEY MICHAEL | SALE | 215.91 | 700 | 151.14K | 2.06K |
| May 31, 2017 | HALL SHANNON | SALE | 222.65 | 900 | 200.39K | 560 |
| May 26, 2017 | HINCKLEY GREGORY K | PURCHASE | 219.58 | 500 | 109.79K | 500 |
| May 18, 2017 | MAGNI GIOVANNI | SALE | 220.23 | 2.11K | 465.35K | 10.54K |
| May 11, 2017 | GOETZ JOHN | SALE | 220.17 | 3.5K | 770.59K | 61.17K |
| Mar 07, 2017 | CROWLEY MICHAEL | SALE | 196.13 | 300 | 58.84K | 2.76K |
| Mar 06, 2017 | MAGNI GIOVANNI | SALE | 196.16 | 998 | 195.77K | 12.66K |
| Mar 02, 2017 | GOETZ JOHN | SALE | 196.34 | 3.5K | 687.19K | 57.92K |
| Nov 09, 2016 | STARK JAMES R | SALE | 171.42 | 1.3K | 222.67K | 0 |
| Nov 07, 2016 | MAGNI GIOVANNI | SALE | 165.62 | 91 | 15.07K | 13.65K |
| Nov 07, 2016 | STARK JAMES R | SALE | 165.62 | 76 | 12.59K | 1.3K |
| Nov 07, 2016 | CROWLEY MICHAEL | SALE | 165.62 | 88 | 14.57K | 3.06K |
| Nov 07, 2016 | HERTIA JOHN | SALE | 165.62 | 227 | 37.6K | 10.63K |
| Nov 07, 2016 | HALL SHANNON | SALE | 165.62 | 84 | 13.91K | 1.39K |
| Sep 13, 2016 | STARK JAMES R | SALE | 158.09 | 76 | 12.01K | 1.18K |
| Sep 13, 2016 | CROWLEY MICHAEL | SALE | 158.09 | 127 | 20.08K | 2.92K |
| Sep 13, 2016 | HALL SHANNON | SALE | 158.08 | 92 | 14.54K | 1.24K |
| Sep 13, 2016 | HERTIA JOHN | SALE | 158.08 | 228 | 36.04K | 10.26K |
| Sep 12, 2016 | STARK JAMES R | SALE | 155.02 | 269 | 41.7K | 1.05K |
| Sep 12, 2016 | HERTIA JOHN | SALE | 155.02 | 728 | 112.86K | 9.89K |
| Sep 12, 2016 | CROWLEY MICHAEL | SALE | 155.02 | 523 | 81.08K | 2.71K |
| Sep 12, 2016 | MAGNI GIOVANNI | SALE | 155.02 | 438 | 67.9K | 13.36K |
| Sep 12, 2016 | HALL SHANNON | SALE | 155.02 | 414 | 64.18K | 1.09K |
| Sep 09, 2016 | HERTIA JOHN | SALE | 158.57 | 2.69K | 426.39K | 8.71K |
| Aug 18, 2016 | CROWLEY MICHAEL | SALE | 153.00 | 669 | 102.36K | 1.87K |
| Jun 13, 2016 | HALL SHANNON | SALE | 145.29 | 1.29K | 187.57K | 617 |