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BALOUSEK JOHN
Insider
First SEC filing: March 1, 2006 · Latest: March 1, 2006
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 |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 5, 2020 | CENTA | M | 6,298 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Aug. 5, 2020 | CENTA | F | 5,433 | $36.82 | $200,043 | 2,288 Direct | -70.37% | Disposed | 16.3% (price as of 2026-10-05) |
| Aug. 5, 2020 | CENTA | M | 6,298 | $31.76 | $200,024 | 7,721 Direct | +442.59% | Acquired | 34.8% (price as of 2026-10-05) |
| May 13, 2020 | CENTA | S | 2,627 | $33.18 | $87,164 | 14,546 Indirect | -15.30% | Disposed | 29.1% (price as of 2026-10-05) |
| May 13, 2020 | CENTA | S | 2,000 | $35.42 | $70,840 | 2,760 Indirect | -42.02% | Disposed | 20.9% (price as of 2026-10-05) |
| March 31, 2020 | CENTA | G | 1,400 | · | · | 4,760 Indirect | -22.73% | Disposed | (price as of 2026-10-05) |
| Feb. 11, 2020 | CENTA | A | 705 | · | · | 1,423 Direct | +98.19% | Acquired | (price as of 2026-10-05) |
| Feb. 11, 2020 | CENTA | A | 7,043 | · | · | 7,043 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 11, 2020 | CENTA | A | 7,043 | · | · | 7,043 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 11, 2020 | CENTA | A | 705 | · | · | 2,595 Direct | +37.30% | Acquired | (price as of 2026-10-05) |
| July 15, 2019 | CENTA | M | 14,546 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| July 15, 2019 | CENTA | M | 14,546 | $13.75 | $200,008 | 16,001 Indirect | +999.73% | Acquired | 211.5% (price as of 2026-10-05) |
| Feb. 12, 2019 | CENTA | A | 7,174 | · | · | 7,174 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 12, 2019 | CENTA | A | 718 | · | · | 1,890 Direct | +61.26% | Acquired | (price as of 2026-10-05) |
| Feb. 21, 2018 | CENTA | S | 5,010 | $37.81 | $189,428 | 1,455 Indirect | -77.49% | Disposed | 13.3% (price as of 2026-10-05) |
| Feb. 13, 2018 | CENTA | A | 5,415 | · | · | 5,415 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 13, 2018 | CENTA | A | 542 | · | · | 6,182 Direct | +9.61% | Acquired | (price as of 2026-10-05) |
| Feb. 8, 2018 | CENTA | M | 6,762 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Feb. 8, 2018 | CENTA | F | 1,752 | $38.06 | $66,681 | 5,640 Direct | -23.70% | Disposed | 12.5% (price as of 2026-10-05) |
| Feb. 8, 2018 | CENTA | M | 6,762 | $9.86 | $66,673 | 7,392 Direct | +1073.33% | Acquired | 334.3% (price as of 2026-10-05) |
| Dec. 12, 2017 | CENTA | S | 13,000 | $39.15 | $508,950 | 5,160 Indirect | -71.59% | Disposed | 9.4% (price as of 2026-10-05) |
| Feb. 17, 2017 | CENTA | S 10b5-1 | 12,000 | $35.50 | $426,000 | 18,160 Indirect | -39.79% | Disposed | 20.6% (price as of 2026-10-05) |
| Feb. 14, 2017 | CENTA | A | 6,298 | · | · | 6,298 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 14, 2017 | CENTA | A | 630 | · | · | 2,085 Direct | +43.30% | Acquired | (price as of 2026-10-05) |
| Aug. 26, 2016 | CENTA | S 10b5-1 | 7,865 | $25.04 | $196,940 | 1,455 Direct | -84.39% | Disposed | 71.0% (price as of 2026-10-05) |
| Aug. 25, 2016 | CENTA | S 10b5-1 | 2,700 | $24.86 | $67,122 | 9,320 Direct | -22.46% | Disposed | 72.3% (price as of 2026-10-05) |
| Aug. 22, 2016 | CENTA | M | 9,247 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Aug. 22, 2016 | CENTA | M | 6,761 | · | · | 6,762 Direct | -50.00% | Disposed | (price as of 2026-10-05) |
| Aug. 22, 2016 | CENTA | F | 2,722 | $24.50 | $66,689 | 12,020 Direct | -18.46% | Disposed | 74.8% (price as of 2026-10-05) |
| Aug. 22, 2016 | CENTA | M | 9,247 | $7.21 | $66,671 | 14,742 Direct | +168.28% | Acquired | 494.0% (price as of 2026-10-05) |
| Aug. 22, 2016 | CENTA | F | 2,721 | $24.50 | $66,664 | 5,495 Direct | -33.12% | Disposed | 74.8% (price as of 2026-10-05) |
| Aug. 22, 2016 | CENTA | M | 6,761 | $9.86 | $66,663 | 8,216 Direct | +464.67% | Acquired | 334.3% (price as of 2026-10-05) |
| May 31, 2016 | CENTA | S | 12,527 | $18.64 | $233,503 | 30,160 Direct | -29.35% | Disposed | 129.7% (price as of 2026-10-05) |
| May 27, 2016 | CENTA | S | 12,344 | $18.70 | $230,833 | 42,687 Direct | -22.43% | Disposed | 129.0% (price as of 2026-10-05) |
| May 26, 2016 | CENTA | S | 129 | $18.65 | $2,406 | 55,031 Direct | -0.23% | Disposed | 129.6% (price as of 2026-10-05) |
| May 5, 2016 | CENTA | S 10b5-1 | 27,314 | $17.00 | $464,338 | 1,455 Direct | -94.94% | Disposed | 151.9% (price as of 2026-10-05) |
| March 18, 2016 | CENTA | S 10b5-1 | 10,961 | $16.00 | $175,376 | 28,769 Direct | -27.59% | Disposed | 167.7% (price as of 2026-10-05) |
| Feb. 9, 2016 | CENTA | A | 14,546 | · | · | 14,546 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 9, 2016 | CENTA | A | 1,455 | · | · | 39,730 Direct | +3.80% | Acquired | (price as of 2026-10-05) |
| Dec. 11, 2015 | CENTA | S | 11,130 | $16.05 | $178,636 | 38,275 Direct | -22.53% | Disposed | 166.8% (price as of 2026-10-05) |
| Dec. 4, 2015 | CENTA | M | 6,761 | · | · | 13,523 Direct | -33.33% | Disposed | (price as of 2026-10-05) |
| Dec. 4, 2015 | CENTA | M | 18,493 | · | · | 9,247 Direct | -66.67% | Disposed | (price as of 2026-10-05) |
| Dec. 4, 2015 | CENTA | M | 22,397 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Dec. 4, 2015 | CENTA | F | 4,260 | $15.65 | $66,669 | 49,405 Direct | -7.94% | Disposed | 173.6% (price as of 2026-10-05) |
| Dec. 4, 2015 | CENTA | M | 6,761 | $9.86 | $66,663 | 53,665 Direct | +14.41% | Acquired | 334.3% (price as of 2026-10-05) |
| Dec. 4, 2015 | CENTA | F | 8,520 | $15.65 | $133,338 | 46,904 Direct | -15.37% | Disposed | 173.6% (price as of 2026-10-05) |
| Dec. 4, 2015 | CENTA | M | 18,493 | $7.21 | $133,335 | 55,424 Direct | +50.07% | Acquired | 494.0% (price as of 2026-10-05) |
| Dec. 4, 2015 | CENTA | F | 12,780 | $15.65 | $200,007 | 36,931 Direct | -25.71% | Disposed | 173.6% (price as of 2026-10-05) |
| Dec. 4, 2015 | CENTA | M | 22,397 | $8.93 | $200,005 | 49,711 Direct | +82.00% | Acquired | 379.6% (price as of 2026-10-05) |
| May 18, 2015 | CENTA | S | 1,995 | $10.43 | $20,808 | 27,314 Direct | -6.81% | Disposed | 310.6% (price as of 2026-10-05) |
| May 15, 2015 | CENTA | M | 21,414 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| May 15, 2015 | CENTA | F | 19,419 | $10.30 | $200,016 | 29,309 Direct | -39.85% | Disposed | 315.8% (price as of 2026-10-05) |
| May 15, 2015 | CENTA | M | 21,414 | $9.34 | $200,007 | 48,728 Direct | +78.40% | Acquired | 358.5% (price as of 2026-10-05) |
| Feb. 10, 2015 | CENTA | A | 20,284 | · | · | 20,284 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 10, 2015 | CENTA | A | 2,029 | · | · | 27,314 Direct | +8.02% | Acquired | (price as of 2026-10-05) |
| Feb. 10, 2014 | CENTA | A | 27,740 | · | · | 27,740 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 10, 2014 | CENTA | A | 2,774 | · | · | 25,285 Direct | +12.32% | Acquired | (price as of 2026-10-05) |
| Feb. 11, 2013 | CENTA | A | 22,397 | · | · | 22,397 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 11, 2013 | CENTA | A | 2,240 | · | · | 22,511 Direct | +11.05% | Acquired | (price as of 2026-10-05) |
| Aug. 7, 2012 | CENTA | S | 8,419 | $10.89 | $91,683 | 20,271 Direct | -29.34% | Disposed | 293.3% (price as of 2026-10-05) |
| Aug. 6, 2012 | CENTA | M | 30,582 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Aug. 6, 2012 | CENTA | S | 3,864 | $11.00 | $42,504 | 28,690 Direct | -11.87% | Disposed | 289.3% (price as of 2026-10-05) |
| Aug. 6, 2012 | CENTA | F | 18,299 | $10.93 | $200,008 | 32,554 Direct | -35.98% | Disposed | 291.8% (price as of 2026-10-05) |
| Aug. 6, 2012 | CENTA | M | 30,582 | $6.54 | $200,006 | 50,853 Direct | +150.87% | Acquired | 554.8% (price as of 2026-10-05) |
| Feb. 13, 2012 | CENTA | A | 21,414 | · | · | 21,414 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 13, 2012 | CENTA | A | 2,142 | · | · | 20,271 Direct | +11.82% | Acquired | (price as of 2026-10-05) |
| May 19, 2011 | CENTA | M | 28,341 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| May 19, 2011 | CENTA | S | 28,341 | $10.13 | $287,094 | 18,129 Direct | -60.99% | Disposed | 322.8% (price as of 2026-10-05) |
| May 19, 2011 | CENTA | M | 28,341 | $4.94 | $140,005 | 46,470 Direct | +156.33% | Acquired | 766.9% (price as of 2026-10-05) |
| Feb. 14, 2011 | CENTA | A | 21,165 | · | · | 21,165 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 14, 2011 | CENTA | A | 2,117 | · | · | 18,129 Direct | +13.22% | Acquired | (price as of 2026-10-05) |
| Feb. 8, 2010 | CENTA | A | 22,076 | · | · | 22,076 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 8, 2010 | CENTA | A | 2,208 | · | · | 16,012 Direct | +16.00% | Acquired | (price as of 2026-10-05) |
| Feb. 9, 2009 | CENTA | A | 30,582 | · | · | 30,582 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 9, 2009 | CENTA | A | 3,059 | · | · | 13,804 Direct | +28.47% | Acquired | (price as of 2026-10-05) |
| Feb. 11, 2008 | CENTA | A | 28,341 | · | · | 28,341 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 11, 2008 | CENTA | A | 3,037 | · | · | 10,745 Direct | +39.40% | Acquired | (price as of 2026-10-05) |
| Nov. 29, 2007 | CENTA | P | 50,000 | $4.87 | $243,500 | 55,160 Direct | +968.99% | Acquired | 779.4% (price as of 2026-10-05) |
| May 31, 2007 | CENTA | M | 5,924 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| May 31, 2007 | CENTA | M | 2,962 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| May 31, 2007 | CENTA | F | 4,984 | $13.35 | $66,536 | 7,708 Direct | -39.27% | Disposed | 220.8% (price as of 2026-10-05) |
| May 31, 2007 | CENTA | M | 5,924 | $11.23 | $66,527 | 12,692 Direct | +87.53% | Acquired | 281.3% (price as of 2026-10-05) |
| May 31, 2007 | CENTA | F | 2,327 | $14.38 | $33,462 | 5,160 Direct | -31.08% | Disposed | 197.8% (price as of 2026-10-05) |
| May 31, 2007 | CENTA | M | 2,962 | $11.30 | $33,471 | 7,487 Direct | +65.46% | Acquired | 279.0% (price as of 2026-10-05) |
| Feb. 12, 2007 | CENTA | A | 1,141 | · | · | 4,525 Direct | +33.72% | Acquired | (price as of 2026-10-05) |
| Feb. 12, 2007 | CENTA | A | 11,024 | · | · | 11,024 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 28, 2006 | CENTA | M | 2,247 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Feb. 28, 2006 | CENTA | S | 2,247 | $54.21 | $121,810 | 3,384 Direct | -39.90% | Disposed | -21.0% (price as of 2026-10-05) |
| Feb. 28, 2006 | CENTA | M | 2,247 | $21.99 | $49,412 | 5,631 Direct | +66.40% | Acquired | 94.7% (price as of 2026-10-05) |
| Feb. 27, 2006 | CENTA | M | 2,300 | · | · | 2,247 Direct | -50.58% | Disposed | (price as of 2026-10-05) |
| Feb. 27, 2006 | CENTA | S | 2,300 | $53.79 | $123,717 | 3,384 Direct | -40.46% | Disposed | -20.4% (price as of 2026-10-05) |
| Feb. 27, 2006 | CENTA | M | 2,300 | $21.99 | $50,577 | 5,684 Direct | +67.97% | Acquired | 94.7% (price as of 2026-10-05) |
| Feb. 13, 2006 | CENTA | A | 2,896 | · | · | 2,896 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 13, 2006 | CENTA | A | 311 | · | · | 3,384 Direct | +10.12% | Acquired | (price as of 2026-10-05) |
| Feb. 25, 2005 | CENTA | M | 10,928 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Feb. 25, 2005 | CENTA | S | 928 | $45.03 | $41,788 | 3,073 Direct | -23.19% | Disposed | -4.9% (price as of 2026-10-05) |
| Feb. 25, 2005 | CENTA | S | 10,000 | $45.00 | $450,000 | 4,001 Direct | -71.42% | Disposed | -4.8% (price as of 2026-10-05) |
| Feb. 25, 2005 | CENTA | M | 10,928 | $9.15 | $99,991 | 14,001 Direct | +355.61% | Acquired | 368.0% (price as of 2026-10-05) |
| Feb. 7, 2005 | CENTA | A | 2,295 | · | · | 2,295 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 7, 2005 | CENTA | A | 230 | · | · | 3,073 Direct | +8.09% | Acquired | (price as of 2026-10-05) |
Showing latest 100 of 105 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 |
|---|---|---|---|---|---|---|---|
| Aug. 5, 2020 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $31.76 | Aug. 9, 2020 | 6,298 | Disposed |
| Feb. 11, 2020 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $28.40 | Feb. 11, 2026 | 7,043 | Acquired |
| Feb. 11, 2020 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $28.40 | Feb. 11, 2026 | 7,043 | Acquired |
| July 15, 2019 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $13.75 | Aug. 9, 2019 | 14,546 | Disposed |
| Feb. 12, 2019 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $27.88 | Feb. 12, 2025 | 7,174 | Acquired |
| Feb. 13, 2018 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $36.94 | Aug. 13, 2021 | 5,415 | Acquired |
| Feb. 8, 2018 | CENTA | Stock Option (right to buy) | Class A Common Stock | $9.86 | Aug. 10, 2018 | 6,762 | Disposed |
| Feb. 14, 2017 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $31.76 | Aug. 9, 2020 | 6,298 | Acquired |
| Aug. 22, 2016 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $7.21 | Aug. 10, 2017 | 9,247 | Disposed |
| Aug. 22, 2016 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $9.86 | Aug. 10, 2018 | 6,761 | Disposed |
| Feb. 9, 2016 | CENTA | Stock Option (right to buy) | Class A Common Stock | $13.75 | Aug. 9, 2019 | 14,546 | Acquired |
| Dec. 4, 2015 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $9.86 | Aug. 10, 2018 | 6,761 | Disposed |
| Dec. 4, 2015 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $7.21 | Aug. 10, 2017 | 18,493 | Disposed |
| Dec. 4, 2015 | CENTA | Stock Option (Right to Buy) | Class A Common Stock | $8.93 | Aug. 11, 2016 | 22,397 | Disposed |
| May 15, 2015 | CENTA | Director Stock Option (right to buy) | Class A Common Stock | $9.34 | Aug. 13, 2015 | 21,414 | Disposed |
| Feb. 10, 2015 | CENTA | Director Stock Option (right to buy) | Class A Common Stock | $9.86 | Aug. 10, 2018 | 20,284 | Acquired |
| Feb. 10, 2014 | CENTA | Director Stock Option (right to buy) | Class A Common Stock | $7.21 | Aug. 10, 2017 | 27,740 | Acquired |
| Feb. 11, 2013 | CENTA | Director Stock Option (right to buy) | Class A Common Stock | $8.93 | Aug. 11, 2016 | 22,397 | Acquired |
| Aug. 6, 2012 | CENTA | Director Stock Option (right to buy) | Class A Common Stock | $6.54 | Aug. 9, 2012 | 30,582 | Disposed |
| Feb. 13, 2012 | CENTA | Director Stock Option (right to buy) | Class A Common Stock | $9.34 | Aug. 13, 2015 | 21,414 | Acquired |
| May 19, 2011 | CENTA | Director Stock Option (Right to Buy) | Class A Common Stock | $4.94 | Aug. 11, 2011 | 28,341 | Disposed |
| Feb. 14, 2011 | CENTA | Director Stock Option (right to buy) | Class A Common Stock | $9.45 | Aug. 14, 2014 | 21,165 | Acquired |
| Feb. 8, 2010 | CENTA | Director Stock Option (right to buy) | Class A Common Stock | $9.06 | Aug. 8, 2013 | 22,076 | Acquired |
| Feb. 9, 2009 | CENTA | Director Stock Option (right to buy) | Class A Common Stock | $6.54 | Aug. 9, 2012 | 30,582 | Acquired |
| Feb. 11, 2008 | CENTA | Director Stock Option (right to buy) | Class A Common Stock | $4.94 | Aug. 11, 2011 | 28,341 | Acquired |
| May 31, 2007 | CENTA | Director Stock Option (right to buy) | Class A Common Stock | $11.23 | Aug. 9, 2007 | 5,924 | Disposed |
| May 31, 2007 | CENTA | Director Stock Option (right to buy) | Common Stock | $11.30 | Aug. 9, 2007 | 2,962 | Disposed |
| Feb. 12, 2007 | CENTA | Director Stock Option (right to buy) | Class A Common Stock | $12.70 | Aug. 12, 2010 | 11,024 | Acquired |
| Feb. 28, 2006 | CENTA | Stock Option (right to buy) | Common Stock | $21.99 | Aug. 10, 2006 | 2,247 | Disposed |
| Feb. 27, 2006 | CENTA | Stock Option (right to buy) | Common Stock | $21.99 | Aug. 10, 2006 | 2,300 | Disposed |
| Feb. 13, 2006 | CENTA | Director Stock Option (right to buy) | Common Stock | $48.35 | Aug. 13, 2009 | 2,896 | Acquired |
| Feb. 25, 2005 | CENTA | Stock Option (right to buy) | Common Stock | $9.15 | Aug. 11, 2005 | 10,928 | Disposed |
| Feb. 7, 2005 | CENTA | Director Stock Option (right to buy) | Common Stock | $43.58 | Aug. 7, 2008 | 2,295 | Acquired |
| Feb. 10, 2004 | CENTA | Stock Option (right to buy) | Common Stock | $7.22 | Dec. 8, 2004 | 7,000 | Disposed |
| Feb. 9, 2004 | CENTA | Director Stock Option (right to buy) | Common Stock | $33.76 | Aug. 9, 2007 | 2,962 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).