Howard Machek
Insider
First SEC filing: Sept. 8, 2015 · Latest: Sept. 8, 2015
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 |
|---|---|---|---|---|---|---|---|---|---|
| July 13, 2026 | CENTA | F | 3,924 | $37.59 | $147,503 | 47,944 Direct | -7.57% | Disposed | -8.8% (price as of 2026-10-02) |
| Feb. 11, 2026 | CENTA | A | 6,250 | · | · | 51,868 Direct | +13.70% | Acquired | (price as of 2026-10-02) |
| Feb. 6, 2026 | CENTA | F | 1,329 | $33.60 | $44,654 | 45,618 Direct | -2.83% | Disposed | 2.0% (price as of 2026-10-02) |
| Jan. 30, 2026 | CENTA | M | 4,255 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Jan. 30, 2026 | CENTA | F | 3,667 | $30.22 | $110,817 | 46,947 Direct | -7.25% | Disposed | 13.4% (price as of 2026-10-02) |
| Jan. 30, 2026 | CENTA | M | 4,255 | $22.80 | $97,014 | 50,614 Direct | +9.18% | Acquired | 50.4% (price as of 2026-10-02) |
| Jan. 30, 2026 | CENTA | F | 985 | $30.22 | $29,767 | 46,359 Direct | -2.08% | Disposed | 13.4% (price as of 2026-10-02) |
| Jan. 30, 2026 | CENTA | A | 2,253 | · | · | 47,344 Direct | +5.00% | Acquired | (price as of 2026-10-02) |
| July 13, 2025 | CENTA | F | 3,924 | $35.85 | $140,675 | 45,091 Direct | -8.01% | Disposed | -4.4% (price as of 2026-10-02) |
| Feb. 11, 2025 | CENTA | A | 2,974 | · | · | 49,015 Direct | +6.46% | Acquired | (price as of 2026-10-02) |
| Feb. 9, 2025 | CENTA | F | 838 | $32.79 | $27,478 | 46,041 Direct | -1.79% | Disposed | 4.5% (price as of 2026-10-02) |
| Feb. 6, 2025 | CENTA | F | 672 | $34.04 | $22,875 | 46,879 Direct | -1.41% | Disposed | 0.7% (price as of 2026-10-02) |
| July 13, 2024 | CENTA | F | 3,923 | $32.91 | $129,106 | 47,551 Direct | -7.62% | Disposed | 4.2% (price as of 2026-10-02) |
| May 14, 2024 | CENTA | S | 10,000 | $40.05 | $400,500 | 51,474 Direct | -16.27% | Disposed | -14.4% (price as of 2026-10-02) |
| May 13, 2024 | CENTA | M | 10,000 | · | · | 4,255 Direct | -70.15% | Disposed | (price as of 2026-10-02) |
| May 13, 2024 | CENTA | F | 7,345 | $40.22 | $295,416 | 61,474 Direct | -10.67% | Disposed | -14.8% (price as of 2026-10-02) |
| May 13, 2024 | CENTA | M | 10,000 | $22.80 | $228,000 | 68,819 Direct | +17.00% | Acquired | 50.4% (price as of 2026-10-02) |
| March 29, 2024 | CENTA | F | 587 | $36.43 | $21,384 | 58,819 Direct | -0.99% | Disposed | -5.9% (price as of 2026-10-02) |
| Feb. 14, 2024 | CENTA | S | 5,000 | $36.40 | $182,000 | 59,406 Direct | -7.76% | Disposed | -5.8% (price as of 2026-10-02) |
| Feb. 13, 2024 | CENTA | M | 4,681 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Feb. 13, 2024 | CENTA | F | 3,576 | $36.97 | $132,205 | 64,406 Direct | -5.26% | Disposed | -7.3% (price as of 2026-10-02) |
| Feb. 13, 2024 | CENTA | M | 4,681 | $21.76 | $101,859 | 67,982 Direct | +7.39% | Acquired | 57.5% (price as of 2026-10-02) |
| Feb. 9, 2024 | CENTA | F | 177 | $37.52 | $6,641 | 63,301 Direct | -0.28% | Disposed | -8.6% (price as of 2026-10-02) |
| Feb. 9, 2024 | CENTA | F | 267 | $37.52 | $10,018 | 63,478 Direct | -0.42% | Disposed | -8.6% (price as of 2026-10-02) |
| Feb. 9, 2024 | CENTA | F | 373 | $37.52 | $13,995 | 63,745 Direct | -0.58% | Disposed | -8.6% (price as of 2026-10-02) |
| Feb. 6, 2024 | CENTA | A | 3,007 | · | · | 51,698 Direct | +6.18% | Acquired | (price as of 2026-10-02) |
| Dec. 15, 2023 | CENTA | M | 6,000 | · | · | 3,745 Direct | -61.57% | Disposed | (price as of 2026-10-02) |
| Dec. 15, 2023 | CENTA | F | 4,770 | $42.33 | $201,914 | 48,691 Direct | -8.92% | Disposed | 1.2% (price as of 2026-10-02) |
| Dec. 15, 2023 | CENTA | M | 6,000 | $27.20 | $163,200 | 53,461 Direct | +12.64% | Acquired | 57.5% (price as of 2026-10-02) |
| Aug. 7, 2023 | CENTA | S | 3,000 | $42.65 | $127,950 | 47,461 Direct | -5.95% | Disposed | 0.5% (price as of 2026-10-02) |
| Aug. 4, 2023 | CENTA | M | 7,221 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Aug. 4, 2023 | CENTA | F | 6,615 | $43.00 | $284,445 | 50,461 Direct | -11.59% | Disposed | -0.3% (price as of 2026-10-02) |
| Aug. 4, 2023 | CENTA | M | 7,221 | $36.70 | $265,011 | 57,076 Direct | +14.48% | Acquired | 16.8% (price as of 2026-10-02) |
| March 29, 2023 | CENTA | F | 458 | $38.36 | $17,569 | 49,855 Direct | -0.91% | Disposed | 11.7% (price as of 2026-10-02) |
| Feb. 9, 2023 | CENTA | F | 133 | $41.09 | $5,465 | 49,288 Direct | -0.27% | Disposed | 4.3% (price as of 2026-10-02) |
| Feb. 6, 2023 | CENTA | A | 2,460 | · | · | 50,446 Direct | +5.13% | Acquired | (price as of 2026-10-02) |
| Feb. 6, 2023 | CENTA | A | 1,435 | · | · | 49,421 Direct | +2.99% | Acquired | (price as of 2026-10-02) |
| Nov. 11, 2022 | CENTA | M | 8,330 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Nov. 11, 2022 | CENTA | F | 7,294 | $40.58 | $295,991 | 47,986 Direct | -13.19% | Disposed | 5.6% (price as of 2026-10-02) |
| Nov. 11, 2022 | CENTA | M | 8,330 | $30.94 | $257,730 | 55,280 Direct | +17.74% | Acquired | 38.5% (price as of 2026-10-02) |
| Nov. 1, 2022 | CENTA | F | 559 | $39.48 | $22,069 | 46,950 Direct | -1.18% | Disposed | 8.5% (price as of 2026-10-02) |
| May 18, 2022 | CENTA | A | 1,001 | · | · | 47,509 Direct | +2.15% | Acquired | (price as of 2026-10-02) |
| March 29, 2022 | CENTA | F | 404 | $41.98 | $16,960 | 46,508 Direct | -0.86% | Disposed | 2.1% (price as of 2026-10-02) |
| Feb. 9, 2022 | CENTA | F | 125 | $41.95 | $5,244 | 46,912 Direct | -0.27% | Disposed | 2.1% (price as of 2026-10-02) |
| Feb. 9, 2022 | CENTA | A | 1,401 | · | · | 47,037 Direct | +3.07% | Acquired | (price as of 2026-10-02) |
| Jan. 27, 2022 | CENTA | M | 9,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Jan. 27, 2022 | CENTA | F | 5,239 | $41.83 | $219,147 | 45,636 Direct | -10.30% | Disposed | 2.4% (price as of 2026-10-02) |
| Jan. 27, 2022 | CENTA | M | 9,000 | $13.82 | $124,380 | 50,875 Direct | +21.49% | Acquired | 210.1% (price as of 2026-10-02) |
| Nov. 1, 2021 | CENTA | F | 559 | $46.89 | $26,212 | 41,875 Direct | -1.32% | Disposed | -8.6% (price as of 2026-10-02) |
| July 13, 2021 | CENTA | A | 21,557 | · | · | 42,434 Direct | +103.26% | Acquired | (price as of 2026-10-02) |
| March 29, 2021 | CENTA | F | 501 | $51.10 | $25,601 | 20,877 Direct | -2.34% | Disposed | -16.1% (price as of 2026-10-02) |
| March 11, 2021 | CENTA | M | 9,000 | · | · | 9,000 Direct | -50.00% | Disposed | (price as of 2026-10-02) |
| March 11, 2021 | CENTA | F | 5,613 | $46.81 | $262,745 | 21,378 Direct | -20.80% | Disposed | -8.5% (price as of 2026-10-02) |
| March 11, 2021 | CENTA | M | 9,000 | $13.82 | $124,380 | 26,991 Direct | +50.03% | Acquired | 210.1% (price as of 2026-10-02) |
| Feb. 9, 2021 | CENTA | A | 3,975 | · | · | 3,975 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 9, 2021 | CENTA | A | 1,325 | · | · | 17,991 Direct | +7.95% | Acquired | (price as of 2026-10-02) |
| Nov. 1, 2020 | CENTA | F | 582 | $35.57 | $20,702 | 16,666 Direct | -3.37% | Disposed | 20.5% (price as of 2026-10-02) |
| Aug. 25, 2020 | CENTA | M | 9,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Aug. 25, 2020 | CENTA | S | 9,000 | $38.10 | $342,900 | 17,248 Direct | -34.29% | Disposed | 12.5% (price as of 2026-10-02) |
| Aug. 25, 2020 | CENTA | F | 5,731 | $38.05 | $218,065 | 26,248 Direct | -17.92% | Disposed | 12.6% (price as of 2026-10-02) |
| Aug. 25, 2020 | CENTA | M | 9,000 | $10.63 | $95,670 | 31,979 Direct | +39.17% | Acquired | 303.1% (price as of 2026-10-02) |
| May 19, 2020 | CENTA | M | 9,000 | · | · | 9,000 Direct | -50.00% | Disposed | (price as of 2026-10-02) |
| May 19, 2020 | CENTA | S | 5,000 | $33.80 | $169,000 | 22,979 Direct | -17.87% | Disposed | 26.8% (price as of 2026-10-02) |
| May 19, 2020 | CENTA | F | 5,299 | $33.31 | $176,510 | 27,979 Direct | -15.92% | Disposed | 28.6% (price as of 2026-10-02) |
| May 19, 2020 | CENTA | M | 9,000 | $10.63 | $95,670 | 33,278 Direct | +37.07% | Acquired | 303.1% (price as of 2026-10-02) |
| Feb. 10, 2020 | CENTA | A | 11,404 | · | · | 11,404 Direct | · | Acquired | (price as of 2026-10-02) |
| Nov. 14, 2019 | CENTA | F | 318 | $29.62 | $9,419 | 24,278 Direct | -1.29% | Disposed | 44.7% (price as of 2026-10-02) |
| May 14, 2019 | CENTA | A | 4,300 | · | · | 24,596 Direct | +21.19% | Acquired | (price as of 2026-10-02) |
| Feb. 14, 2019 | CENTA | F | 1,091 | $27.38 | $29,872 | 20,296 Direct | -5.10% | Disposed | 56.5% (price as of 2026-10-02) |
| Feb. 13, 2019 | CENTA | A | 9,745 | · | · | 9,745 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 4, 2019 | CENTA | M | 8,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Feb. 4, 2019 | CENTA | F | 3,889 | $35.97 | $139,887 | 21,387 Direct | -15.39% | Disposed | 19.1% (price as of 2026-10-02) |
| Feb. 4, 2019 | CENTA | M | 8,000 | $6.43 | $51,440 | 25,276 Direct | +46.31% | Acquired | 566.4% (price as of 2026-10-02) |
| Nov. 14, 2018 | CENTA | A | 3,520 | · | · | 17,276 Direct | +25.59% | Acquired | (price as of 2026-10-02) |
| Nov. 14, 2018 | CENTA | F | 323 | $28.82 | $9,309 | 13,756 Direct | -2.29% | Disposed | 48.7% (price as of 2026-10-02) |
| March 31, 2018 | CENTA | F | 519 | $38.90 | $20,189 | 14,079 Direct | -3.56% | Disposed | 10.2% (price as of 2026-10-02) |
| Feb. 22, 2018 | CENTA | S | 6,000 | $38.01 | $228,060 | 14,598 Direct | -29.13% | Disposed | 12.7% (price as of 2026-10-02) |
| Feb. 14, 2018 | CENTA | F | 1,214 | $37.16 | $45,112 | 20,598 Direct | -5.57% | Disposed | 15.3% (price as of 2026-10-02) |
| Jan. 19, 2018 | CENTA | A | 7,221 | · | · | 7,221 Direct | · | Acquired | (price as of 2026-10-02) |
| Nov. 14, 2017 | CENTA | F | 351 | $34.55 | $12,127 | 21,812 Direct | -1.58% | Disposed | 24.0% (price as of 2026-10-02) |
| Sept. 26, 2017 | CENTA | M | 5,000 | · | · | 8,000 Direct | -38.46% | Disposed | (price as of 2026-10-02) |
| Sept. 26, 2017 | CENTA | F | 2,443 | $35.67 | $87,142 | 22,163 Direct | -9.93% | Disposed | 20.1% (price as of 2026-10-02) |
| Sept. 26, 2017 | CENTA | M | 5,000 | $6.43 | $32,150 | 24,606 Direct | +25.50% | Acquired | 566.4% (price as of 2026-10-02) |
| March 31, 2017 | CENTA | F | 564 | $34.56 | $19,492 | 19,606 Direct | -2.80% | Disposed | 24.0% (price as of 2026-10-02) |
| March 17, 2017 | CENTA | M | 5,000 | · | · | 13,000 Direct | -27.78% | Disposed | (price as of 2026-10-02) |
| March 17, 2017 | CENTA | F | 2,455 | $34.93 | $85,753 | 20,170 Direct | -10.85% | Disposed | 22.7% (price as of 2026-10-02) |
| March 17, 2017 | CENTA | M | 5,000 | $6.43 | $32,150 | 22,625 Direct | +28.37% | Acquired | 566.4% (price as of 2026-10-02) |
| Feb. 14, 2017 | CENTA | F | 1,157 | $31.60 | $36,561 | 17,625 Direct | -6.16% | Disposed | 35.6% (price as of 2026-10-02) |
| Jan. 20, 2017 | CENTA | A | 8,330 | · | · | 8,330 Direct | · | Acquired | (price as of 2026-10-02) |
| Nov. 14, 2016 | CENTA | A | 2,786 | · | · | 18,782 Direct | +17.42% | Acquired | (price as of 2026-10-02) |
| Aug. 9, 2016 | CENTA | M | 9,000 | $9.54 | $85,860 | 31,021 Direct | +40.87% | Acquired | 349.2% (price as of 2026-10-02) |
| Aug. 9, 2016 | CENTA | F | 5,525 | $25.02 | $138,236 | 25,496 Direct | -17.81% | Disposed | 71.3% (price as of 2026-10-02) |
| Aug. 9, 2016 | CENTA | S | 9,500 | $25.05 | $237,975 | 15,996 Direct | -37.26% | Disposed | 71.1% (price as of 2026-10-02) |
| Aug. 9, 2016 | CENTA | M | 9,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 9, 2016 | CENTA | M | 9,000 | · | · | 9,000 Direct | -50.00% | Disposed | (price as of 2026-10-02) |
| May 9, 2016 | CENTA | M | 3,200 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 9, 2016 | CENTA | S | 6,000 | $18.75 | $112,500 | 22,021 Direct | -21.41% | Disposed | 128.5% (price as of 2026-10-02) |
| May 9, 2016 | CENTA | F | 6,231 | $18.82 | $117,267 | 28,021 Direct | -18.19% | Disposed | 127.7% (price as of 2026-10-02) |
| May 9, 2016 | CENTA | M | 9,000 | $9.54 | $85,860 | 34,252 Direct | +35.64% | Acquired | 349.2% (price as of 2026-10-02) |
| May 9, 2016 | CENTA | F | 2,186 | $18.82 | $41,141 | 25,252 Direct | -7.97% | Disposed | 127.7% (price as of 2026-10-02) |
Showing latest 100 of 106 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 |
|---|---|---|---|---|---|---|---|
| Jan. 30, 2026 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $22.80 | Feb. 10, 2026 | 4,255 | Disposed |
| May 13, 2024 | CENTA | Stock Option (Right to Buy) | Class A Common Stock [F4] | · | Feb. 10, 2026 | 10,000 | Disposed |
| Feb. 13, 2024 | CENTA | Stock Option (Right to Buy) | Class A Common Stock [F4] | · | Feb. 13, 2025 | 4,681 | Disposed |
| Dec. 15, 2023 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $27.20 | Feb. 13, 2025 | 6,000 | Disposed |
| Aug. 4, 2023 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $36.70 | Jan. 19, 2024 | 7,221 | Disposed |
| Nov. 11, 2022 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $30.94 | Jan. 20, 2023 | 8,330 | Disposed |
| Jan. 27, 2022 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $13.82 | Jan. 29, 2022 | 9,000 | Disposed |
| March 11, 2021 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $13.82 | Jan. 29, 2022 | 9,000 | Disposed |
| Feb. 9, 2021 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $44.02 | Feb. 9, 2027 | 3,975 | Acquired |
| Aug. 25, 2020 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $10.63 | March 31, 2021 | 9,000 | Disposed |
| May 19, 2020 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $10.63 | March 31, 2021 | 9,000 | Disposed |
| Feb. 10, 2020 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $28.50 | Feb. 10, 2026 | 11,404 | Acquired |
| Feb. 13, 2019 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $27.20 | Feb. 13, 2025 | 9,745 | Acquired |
| Feb. 4, 2019 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $6.43 | March 31, 2019 | 8,000 | Disposed |
| Jan. 19, 2018 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $36.70 | Jan. 19, 2024 | 7,221 | Acquired |
| Sept. 26, 2017 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $6.43 | March 31, 2019 | 5,000 | Disposed |
| March 17, 2017 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $6.43 | March 31, 2019 | 5,000 | Disposed |
| Jan. 20, 2017 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $30.94 | Jan. 20, 2023 | 8,330 | Acquired |
| Aug. 9, 2016 | CENTA | Stock Option (Right to buy) | Class A Common Stock | $9.54 | March 26, 2018 | 9,000 | Disposed |
| May 9, 2016 | CENTA | Stock Option (Right to buy) | Class A Common Stock | $9.54 | March 26, 2018 | 9,000 | Disposed |
| May 9, 2016 | CENTA | Stock Option (Right to buy) | Class A Common Stock | $9.26 | April 13, 2017 | 3,200 | Disposed |
| Jan. 29, 2016 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $13.82 | Jan. 29, 2022 | 18,000 | Acquired |
| Sept. 3, 2015 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $9.26 | April 13, 2017 | 12,800 | Disposed |
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 |
|---|---|---|---|---|
| Sept. 8, 2015 | CENTA | Common Stock | 1,000 | Direct |
| Sept. 8, 2015 | CENTA | Class A Common Stock | · | Direct |
| Sept. 8, 2015 | CENTA | Units - Common Stock | · | Indirect |
| Sept. 8, 2015 | CENTA | Units - Class A Common Stock | · | Indirect |
| Sept. 8, 2015 | CENTA | Stock Option (Right to Buy) | 20,000 | Direct |
| Sept. 8, 2015 | CENTA | Stock Option (Right to Buy) | 18,000 | Direct |
| Sept. 8, 2015 | CENTA | Stock Option (Right to Buy) | 18,000 | Direct |
| Sept. 8, 2015 | CENTA | Stock Option (Right to Buy) | 18,000 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2017 | $319,027 | · | · | · | · | · | $21,855 | $484,437 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.