Errol B Desouza
CIK 1213895 · View on SEC EDGAR ↗
Insider
First SEC filing: July 23, 2010 · Latest: July 23, 2010
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 95 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 |
|---|---|---|---|---|---|---|---|---|---|
| June 17, 2026 | ALEC | A | 9,450 | — | — | 9,450 Direct | — | Acquired | (price as of 2026-08-21) |
| June 17, 2026 | ALEC | A | 28,700 | — | — | 98,650 Direct | +41.03% | Acquired | (price as of 2026-08-21) |
| June 11, 2025 | ALEC | A | 9,450 | — | — | 9,450 Direct | — | Acquired | (price as of 2026-08-21) |
| June 11, 2025 | ALEC | A | 28,700 | — | — | 69,950 Direct | +69.58% | Acquired | (price as of 2026-08-21) |
| March 19, 2024 | ALEC | A | 19,420 | — | — | 19,420 Direct | — | Acquired | (price as of 2026-08-21) |
| March 19, 2024 | ALEC | A | 41,250 | — | — | 41,250 Direct | — | Acquired | (price as of 2026-08-21) |
| Nov. 30, 2023 | CYCN | A | 20,000 | — | — | 50,000 Direct | +66.67% | Acquired | (price as of 2026-08-21) |
| Nov. 30, 2023 | CYCN | A | 30,000 | — | — | 30,000 Direct | — | Acquired | (price as of 2026-08-21) |
| June 23, 2023 | RPRX | A | 7,747 | — | — | 64,445 Direct | +13.66% | Acquired | (price as of 2026-08-21) |
| June 24, 2022 | RPRX | A | 6,328 | — | — | 56,698 Direct | +12.56% | Acquired | (price as of 2026-08-21) |
| June 14, 2022 | CYCN | A | 20,000 | — | — | 20,000 Direct | — | Acquired | (price as of 2026-08-21) |
| Oct. 1, 2021 | GYRE | A | 3,588 | — | — | 29,801 Direct | +13.69% | Acquired | (price as of 2026-08-21) |
| July 1, 2021 | GYRE | A | 3,406 | — | — | 26,213 Direct | +14.93% | Acquired | (price as of 2026-08-21) |
| June 25, 2021 | RPRX | A | 5,726 | — | — | 50,370 Direct | +12.83% | Acquired | (price as of 2026-08-21) |
| June 24, 2021 | CYCN | A | 10,000 | — | — | 10,000 Direct | — | Acquired | (price as of 2026-08-21) |
| June 9, 2021 | GYRE | A | 14,000 | — | — | 14,000 Direct | — | Acquired | (price as of 2026-08-21) |
| April 1, 2021 | GYRE | A | 2,926 | — | — | 22,807 Direct | +14.72% | Acquired | (price as of 2026-08-21) |
| Jan. 5, 2021 | GYRE | A | 2,129 | — | — | 19,881 Direct | +11.99% | Acquired | (price as of 2026-08-21) |
| Oct. 1, 2020 | GYRE | A | 3,125 | — | — | 17,752 Direct | +21.36% | Acquired | (price as of 2026-08-21) |
| July 1, 2020 | GYRE | A | 2,129 | — | — | 14,627 Direct | +17.03% | Acquired | (price as of 2026-08-21) |
| June 18, 2020 | RPRX | A | 8,929 | — | — | 44,644 Direct | +25.00% | Acquired | (price as of 2026-08-21) |
| June 15, 2020 | RPRX | A | 53,915 | — | — | 53,915 Indirect | — | Acquired | (price as of 2026-08-21) |
| June 15, 2020 | RPRX | A | 35,715 | — | — | 35,715 Direct | — | Acquired | (price as of 2026-08-21) |
| June 11, 2020 | GYRE | A | 5,000 | — | — | 5,000 Direct | — | Acquired | (price as of 2026-08-21) |
| April 1, 2020 | GYRE | A | 2,860 | — | — | 12,498 Direct | +29.67% | Acquired | (price as of 2026-08-21) |
| Jan. 2, 2020 | GYRE | A | 1,835 | — | — | 9,638 Direct | +23.52% | Acquired | (price as of 2026-08-21) |
| Oct. 1, 2019 | GYRE | A | 2,545 | — | — | 7,803 Direct | +48.40% | Acquired | (price as of 2026-08-21) |
| July 1, 2019 | GYRE | A | 1,810 | — | — | 5,258 Direct | +52.49% | Acquired | (price as of 2026-08-21) |
| June 13, 2019 | GYRE | A | 5,000 | — | — | 5,000 Direct | — | Acquired | (price as of 2026-08-21) |
| April 1, 2019 | GYRE | A | 1,504 | — | — | 3,448 Direct | +77.37% | Acquired | (price as of 2026-08-21) |
| Dec. 31, 2018 | GYRE | A | 1,703 | — | — | 1,944 Direct | +706.64% | Acquired | (price as of 2026-08-21) |
| June 13, 2018 | GYRE | A | 5,000 | — | — | 5,000 Direct | — | Acquired | (price as of 2026-08-21) |
| Feb. 20, 2018 | GYRE | J | 4,679 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-21) |
| Feb. 20, 2018 | GYRE | J | None | — | — | — Direct | — | Disposed | (price as of 2026-08-21) |
| July 13, 2017 | GYRE | A | 10,000 | — | — | 10,000 Direct | — | Acquired | (price as of 2026-08-21) |
| June 9, 2016 | GYRE | A | 7,500 | — | — | 7,500 Direct | — | Acquired | (price as of 2026-08-21) |
| Oct. 22, 2015 | GYRE | A | 6,750 | — | — | 6,750 Direct | — | Acquired | (price as of 2026-08-21) |
| Oct. 22, 2015 | GYRE | A | 8,250 | — | — | 8,250 Direct | — | Acquired | (price as of 2026-08-21) |
| Oct. 22, 2015 | GYRE | A | 6,750 | — | — | 6,750 Direct | — | Acquired | (price as of 2026-08-21) |
| Aug. 14, 2015 | GYRE | A | None | — | — | — Direct | — | Acquired | (price as of 2026-08-21) |
| Dec. 11, 2014 | GYRE | A | 10,000 | — | — | 15,333 Direct | +187.51% | Acquired | (price as of 2026-08-21) |
| June 12, 2014 | GYRE | A | 12,500 | — | — | 12,500 Direct | — | Acquired | (price as of 2026-08-21) |
| June 7, 2013 | GYRE | A | 12,500 | — | — | 12,500 Direct | — | Acquired | (price as of 2026-08-21) |
| June 7, 2012 | GYRE | A | 7,500 | — | — | 7,500 Direct | — | Acquired | (price as of 2026-08-21) |
| June 15, 2011 | GYRE | A | 7,500 | — | — | 7,500 Direct | — | Acquired | (price as of 2026-08-21) |
| July 21, 2010 | PTN | A | 40,000 | — | — | 40,000 Direct | — | Acquired | (price as of 2026-08-21) |
| June 17, 2010 | GYRE | A | 7,500 | — | — | 7,500 Direct | — | Acquired | (price as of 2026-08-21) |
| July 1, 2009 | PTN | A | 40,000 | — | — | 40,000 Direct | — | Acquired | (price as of 2026-08-21) |
| June 17, 2009 | GYRE | A | 7,500 | — | — | 7,500 Direct | — | Acquired | (price as of 2026-08-21) |
| April 30, 2009 | IDXX | A | 318 | $39.30 | $12,497 | 7,276 Direct | +4.57% | Acquired | 2681.8% (price as of 2026-08-21) |
| Feb. 14, 2009 | IDXX | A | 4,527 | — | — | 4,527 Direct | — | Acquired | (price as of 2026-08-21) |
| Feb. 14, 2009 | IDXX | A | 1,309 | $34.37 | $44,990 | 5,845 Direct | +28.86% | Acquired | 3080.8% (price as of 2026-08-21) |
| Jan. 30, 2009 | IDXX | A | 381 | $32.80 | $12,497 | 6,958 Direct | +5.79% | Acquired | 3233.0% (price as of 2026-08-21) |
| Oct. 30, 2008 | IDXX | A | 356 | $35.16 | $12,517 | 6,577 Direct | +5.72% | Acquired | 3009.3% (price as of 2026-08-21) |
| July 30, 2008 | IDXX | A | 239 | $52.21 | $12,478 | 6,221 Direct | +4.00% | Acquired | 1993.9% (price as of 2026-08-21) |
| July 2, 2008 | GYRE | A | 7,500 | — | — | 7,500 Direct | — | Acquired | (price as of 2026-08-21) |
| July 1, 2008 | PTN | A | 40,000 | — | — | 40,000 Direct | — | Acquired | (price as of 2026-08-21) |
| July 1, 2008 | PTN | A | 150,000 | — | — | 150,000 Direct | — | Acquired | (price as of 2026-08-21) |
| April 30, 2008 | IDXX | A | 235 | $53.20 | $12,502 | 5,982 Direct | +4.09% | Acquired | 1955.0% (price as of 2026-08-21) |
| Feb. 14, 2008 | IDXX | A | 2,934 | $56.95 | $167,091 | 2,934 Direct | — | Acquired | 1819.6% (price as of 2026-08-21) |
| Feb. 14, 2008 | IDXX | A | 790 | $56.95 | $44,990 | 4,536 Direct | +21.09% | Acquired | 1819.6% (price as of 2026-08-21) |
| Jan. 30, 2008 | IDXX | A | 225 | $55.62 | $12,514 | 5,747 Direct | +4.07% | Acquired | 1865.6% (price as of 2026-08-21) |
| Oct. 30, 2007 | IDXX | A | 89 | $117.84 | $10,488 | 2,761 Direct | +3.33% | Acquired | 1755.5% (price as of 2026-08-21) |
| Aug. 31, 2007 | GYRE | M | 3,333 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-21) |
| Aug. 31, 2007 | GYRE | M | 3,333 | $0.08 | $267 | 5,333 Direct | +166.65% | Acquired | -94.4% (price as of 2026-08-21) |
| July 30, 2007 | IDXX | A | 106 | $99.46 | $10,543 | 2,672 Direct | +4.13% | Acquired | 2098.4% (price as of 2026-08-21) |
| July 1, 2007 | PTN | A | 20,000 | — | — | 20,000 Direct | — | Acquired | (price as of 2026-08-21) |
| June 20, 2007 | GYRE | A | 7,500 | — | — | 7,500 Direct | — | Acquired | (price as of 2026-08-21) |
| May 14, 2007 | GYRE | A | 20,000 | — | — | 20,000 Direct | — | Acquired | (price as of 2026-08-21) |
| May 14, 2007 | GYRE | A | 7,500 | — | — | 7,500 Direct | — | Acquired | (price as of 2026-08-21) |
| April 30, 2007 | IDXX | A | 116 | $90.17 | $10,460 | 2,566 Direct | +4.73% | Acquired | 2324.8% (price as of 2026-08-21) |
| Feb. 14, 2007 | IDXX | A | 895 | $83.87 | $75,064 | 1,873 Direct | +91.51% | Acquired | 2507.0% (price as of 2026-08-21) |
| Feb. 1, 2007 | GYRE | M | 1,000 | — | — | 0 Direct | -100.00% | Disposed | (price as of 2026-08-21) |
| Feb. 1, 2007 | GYRE | M | 1,000 | $0.08 | $80 | 2,000 Direct | +100.00% | Acquired | -94.4% (price as of 2026-08-21) |
| Jan. 30, 2007 | IDXX | A | 110 | $84.15 | $9,256 | 2,450 Direct | +4.70% | Acquired | 2498.3% (price as of 2026-08-21) |
| Oct. 30, 2006 | IDXX | A | 108 | $85.49 | $9,233 | 2,340 Direct | +4.84% | Acquired | 2457.6% (price as of 2026-08-21) |
| July 28, 2006 | IDXX | A | 107 | $86.81 | $9,289 | 2,232 Direct | +5.04% | Acquired | 2418.7% (price as of 2026-08-21) |
| July 1, 2006 | PTN | A | 20,000 | — | — | 20,000 Direct | — | Acquired | (price as of 2026-08-21) |
| April 28, 2006 | IDXX | A | 111 | $83.21 | $9,236 | 2,125 Direct | +5.51% | Acquired | 2527.7% (price as of 2026-08-21) |
| Feb. 14, 2006 | IDXX | A | 978 | $76.67 | $74,983 | 978 Direct | — | Acquired | 2751.8% (price as of 2026-08-21) |
| Jan. 30, 2006 | IDXX | A | 175 | $77.21 | $13,512 | 2,014 Direct | +9.52% | Acquired | 2731.9% (price as of 2026-08-21) |
| Oct. 28, 2005 | IDXX | A | 133 | $68.51 | $9,112 | 1,839 Direct | +7.80% | Acquired | 3091.5% (price as of 2026-08-21) |
| July 29, 2005 | IDXX | A | 144 | $63.46 | $9,138 | 1,706 Direct | +9.22% | Acquired | 3345.4% (price as of 2026-08-21) |
| July 1, 2005 | PTN | A | 20,000 | — | — | 20,000 Direct | — | Acquired | (price as of 2026-08-21) |
| May 18, 2005 | IDXX | A | 2,500 | $58.54 | $146,350 | 2,500 Direct | — | Acquired | 3635.0% (price as of 2026-08-21) |
| April 29, 2005 | IDXX | A | 178 | $56.74 | $10,100 | 1,562 Direct | +12.86% | Acquired | 3753.5% (price as of 2026-08-21) |
| Jan. 31, 2005 | IDXX | A | 209 | $58.01 | $12,124 | 1,384 Direct | +17.79% | Acquired | 3669.1% (price as of 2026-08-21) |
| Oct. 29, 2004 | IDXX | A | 184 | $49.84 | $9,171 | 1,175 Direct | +18.57% | Acquired | 4287.0% (price as of 2026-08-21) |
| July 30, 2004 | IDXX | A | 181 | $50.39 | $9,121 | 991 Direct | +22.35% | Acquired | 4239.1% (price as of 2026-08-21) |
| July 1, 2004 | PTN | A | 20,000 | — | — | 20,000 Direct | — | Acquired | (price as of 2026-08-21) |
| May 19, 2004 | IDXX | A | 2,400 | $60.99 | $146,376 | 2,400 Direct | — | Acquired | 3485.0% (price as of 2026-08-21) |
| March 31, 2004 | IDXX | A | 149 | $56.87 | $8,474 | 810 Direct | +22.54% | Acquired | 3744.7% (price as of 2026-08-21) |
| Dec. 31, 2003 | IDXX | A | 205 | $46.28 | $9,487 | 661 Direct | +44.96% | Acquired | 4624.5% (price as of 2026-08-21) |
| Dec. 5, 2003 | PTN | A | 10,000 | — | — | 10,000 Direct | — | Acquired | (price as of 2026-08-21) |
| Sept. 30, 2003 | IDXX | A | 224 | $42.55 | $9,531 | 456 Direct | +96.55% | Acquired | 5038.6% (price as of 2026-08-21) |
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 |
|---|---|---|---|---|---|---|---|
| June 17, 2026 | ALEC | Stock Option (right to buy) | Common Stock (9,450) | $0.00 | June 16, 2036 | 9,450 | Acquired |
| June 11, 2025 | ALEC | Stock Option (right to buy) | Common Stock (9,450) | $1.63 | June 10, 2035 | 9,450 | Acquired |
| March 19, 2024 | ALEC | Stock Option (right to buy) | Common Stock (19,420) | $6.20 | March 19, 2034 | 19,420 | Acquired |
| June 14, 2022 | CYCN | Stock Option (Right to Buy) | Common Stock (20,000) | $0.53 | June 14, 2032 | 20,000 | Acquired |
| June 24, 2021 | CYCN | Stock Option (Right to Buy) | Common Stock (10,000) | $3.97 | June 24, 2031 | 10,000 | Acquired |
| June 9, 2021 | GYRE | Stock Option (Right to Buy) | Common Stock (14,000) | $4.55 | June 9, 2031 | 14,000 | Acquired |
| June 15, 2020 | RPRX | LP interests in RPI US Partners 2019, LP | Class A Ordinary Shares (539,150) | $0.00 | — | 53,915 | Acquired |
| June 11, 2020 | GYRE | Stock Option (Right to Buy) | Common Stock (5,000) | $7.18 | June 11, 2030 | 5,000 | Acquired |
| June 13, 2019 | GYRE | Stock Option (Right to Buy) | Common Stock (5,000) | $7.46 | June 13, 2029 | 5,000 | Acquired |
| June 13, 2018 | GYRE | Stock Option (Right to Buy) | Common Stock (5,000) | $24.94 | June 13, 2028 | 5,000 | Acquired |
| Feb. 20, 2018 | GYRE | Redeemable Convertible Note | Common Stock (33) | — | — | 4,679 | Disposed |
| Feb. 20, 2018 | GYRE | Redeemable Convertible Note | Common Stock (78) | — | — | — | Disposed |
| July 13, 2017 | GYRE | Stock Option (Right to Buy) | Common Stock (10,000) | $4.40 | July 13, 2027 | 10,000 | Acquired |
| June 9, 2016 | GYRE | Stock Option (Right to Buy) | Common Stock (7,500) | $1.88 | June 9, 2026 | 7,500 | Acquired |
| Oct. 22, 2015 | GYRE | Stock Option (Right to Buy) | Common Stock (6,750) | $4.40 | Oct. 22, 2025 | 6,750 | Acquired |
| Oct. 22, 2015 | GYRE | Stock Option (Right to Buy) | Common Stock (8,250) | $4.40 | Oct. 22, 2025 | 8,250 | Acquired |
| Oct. 22, 2015 | GYRE | Stock Option (Right to Buy) | Common Stock (6,750) | $4.40 | Oct. 22, 2025 | 6,750 | Acquired |
| Aug. 14, 2015 | GYRE | Redeemable Convertible Note | Common Stock (12,628) | $1.31 | — | — | Acquired |
| June 12, 2014 | GYRE | Stock Option (Right to Buy) | Common Stock (12,500) | $4.29 | June 11, 2024 | 12,500 | Acquired |
| June 7, 2013 | GYRE | Stock Option (Right to Buy) | Common Stock (12,500) | $5.23 | June 6, 2023 | 12,500 | Acquired |
| June 7, 2012 | GYRE | Stock Option (Right to Buy) | Common Stock (7,500) | $4.16 | June 6, 2022 | 7,500 | Acquired |
| June 15, 2011 | GYRE | Stock Option (Right to Buy) | Common Stock (7,500) | $21.25 | June 14, 2021 | 7,500 | Acquired |
| July 21, 2010 | PTN | stock option (right to buy) | common stock (40,000) | $0.17 | July 21, 2020 | 40,000 | Acquired |
| June 17, 2010 | GYRE | Stock Option (Right to Buy) | Common Stock (7,500) | $22.76 | June 16, 2020 | 7,500 | Acquired |
| July 1, 2009 | PTN | stock option (right to buy) | common stock (40,000) | $0.28 | July 1, 2019 | 40,000 | Acquired |
| June 17, 2009 | GYRE | Stock Option (Right to Buy) | Common Stock (7,500) | $2.71 | June 16, 2019 | 7,500 | Acquired |
| Feb. 14, 2009 | IDXX | Non-Qualified Stock Option (right to buy) | Common Stock (4,527) | $34.37 | Feb. 13, 2016 | 4,527 | Acquired |
| Feb. 14, 2009 | IDXX | Deferred Stock Unit | Common Stock (1,309) | — | — | 1,309 | Acquired |
| July 2, 2008 | GYRE | Stock Option (Right to Buy) | Common Stock (7,500) | $7.10 | July 1, 2018 | 7,500 | Acquired |
| July 1, 2008 | PTN | stock option (right to buy) | common stock (40,000) | $0.18 | July 1, 2018 | 40,000 | Acquired |
| July 1, 2008 | PTN | stock option (right to buy) | common stock (150,000) | $0.18 | July 1, 2018 | 150,000 | Acquired |
| Feb. 14, 2008 | IDXX | Non-Qualified Stock Option (right to buy) | Common Stock (2,934) | $56.95 | Feb. 13, 2015 | 2,934 | Acquired |
| Feb. 14, 2008 | IDXX | Deferred Stock Unit | Common Stock (790) | — | — | 790 | Acquired |
| Aug. 31, 2007 | GYRE | Stock Option (Right to Buy) | Common Stock (3,333) | $0.08 | Dec. 31, 2007 | 3,333 | Disposed |
| July 1, 2007 | PTN | stock option (right to buy) | common stock (20,000) | $1.98 | July 1, 2017 | 20,000 | Acquired |
| June 20, 2007 | GYRE | Stock Option (Right to Buy) | Common Stock (7,500) | $9.27 | June 19, 2017 | 7,500 | Acquired |
| May 14, 2007 | GYRE | Stock Option (Right to Buy) | Common Stock (20,000) | $9.37 | May 13, 2017 | 20,000 | Acquired |
| May 14, 2007 | GYRE | Stock Option (Right to Buy) | Common Stock (7,500) | $9.37 | May 13, 2017 | 7,500 | Acquired |
| Feb. 14, 2007 | IDXX | Deferred Stock Unit | Common Stock (895) | — | — | 895 | Acquired |
| Feb. 1, 2007 | GYRE | Stock Option (Right to Buy) | Common Stock (1,000) | $0.08 | — | 1,000 | Disposed |
| July 1, 2006 | PTN | stock option (right to buy) | common stock (20,000) | $2.00 | July 1, 2016 | 20,000 | Acquired |
| Feb. 14, 2006 | IDXX | Deferred Stock Unit | Common Stock (978) | — | — | 978 | Acquired |
| July 1, 2005 | PTN | stock option (right to buy) | common stock (20,000) | $1.75 | July 1, 2015 | 20,000 | Acquired |
| May 18, 2005 | IDXX | Non-Qualified Stock Option (right to buy) | Common Stock (2,500) | $58.54 | May 17, 2015 | 2,500 | Acquired |
| July 1, 2004 | PTN | stock option (right to buy) | common stock (20,000) | $4.21 | July 1, 2014 | 20,000 | Acquired |
| May 19, 2004 | IDXX | Non-Qualified Stock Option (right to buy) | Common Stock (2,400) | $60.99 | May 19, 2014 | 2,400 | Acquired |
| Dec. 5, 2003 | PTN | stock option (right to buy) | common stock (10,000) | $3.13 | Dec. 5, 2013 | 10,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 6 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| March 21, 2024 | ALEC | No securities of the Issuer are beneficially owned. | 0 | Direct |
| May 19, 2021 | CYCN | Common Stock | 0 | Direct |
| June 15, 2020 | RPRX | LP interests in RPI US Partners 2019, LP→ Class A Ordinary Shares, par value $0.0001 per share (539,150) | 539,150 | Indirect |
| April 11, 2006 | GYRE | Common Stock | 1,000 | Direct |
| April 11, 2006 | GYRE | Stock Option (Right to Buy)→ Common Stock (3,333) | 3,333 | Direct |
| April 11, 2006 | GYRE | Stock Option (Right to Buy)→ Common Stock (1,000) | 1,000 | Direct |