David Landless
Insider
First SEC filing: Dec. 13, 2018 · Latest: Jan. 2, 2019
Insider at
Insider transactions
0 buys (P)
3 sells (S)
Net: $-90,950
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 |
|---|---|---|---|---|---|---|---|---|---|
| Feb. 27, 2026 | IOSP | S | 307 | $76.79 | $23,575 | 7,632 Direct | -3.87% | Disposed | 26.9% (price as of 2026-10-02) |
| Feb. 27, 2026 | IOSP | S | 287 | $76.30 | $21,898 | 7,939 Direct | -3.49% | Disposed | 27.7% (price as of 2026-10-02) |
| Feb. 27, 2026 | IOSP | S | 594 | $76.56 | $45,477 | 7,632 Direct | -7.22% | Disposed | 27.2% (price as of 2026-10-02) |
| Feb. 23, 2026 | IOSP | A | 1,539 | · | · | 8,226 Direct | +23.01% | Acquired | (price as of 2026-10-02) |
| Feb. 24, 2025 | IOSP | A | 1,209 | · | · | 6,687 Direct | +22.07% | Acquired | (price as of 2026-10-02) |
| Feb. 21, 2025 | IOSP | F | 306 | $105.07 | $32,151 | 5,478 Direct | -5.29% | Disposed | -7.3% (price as of 2026-10-02) |
| Feb. 26, 2024 | IOSP | A | 782 | · | · | 5,784 Direct | +15.63% | Acquired | (price as of 2026-10-02) |
| Feb. 22, 2024 | IOSP | F | 282 | $123.77 | $34,903 | 5,002 Direct | -5.34% | Disposed | -21.3% (price as of 2026-10-02) |
| Feb. 27, 2023 | IOSP | A | 297 | · | · | 297 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 27, 2023 | IOSP | A | 594 | · | · | 4,031 Direct | +17.28% | Acquired | (price as of 2026-10-02) |
| Feb. 24, 2023 | IOSP | M | 627 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Feb. 24, 2023 | IOSP | F | 295 | $110.09 | $32,477 | 3,437 Direct | -7.90% | Disposed | -11.5% (price as of 2026-10-02) |
| Feb. 24, 2023 | IOSP | M | 627 | · | · | 3,732 Direct | +20.19% | Acquired | (price as of 2026-10-02) |
| June 7, 2022 | LXFR | M | 5,117 | · | · | 11,340 Direct | +82.23% | Acquired | (price as of 2026-10-02) |
| June 7, 2022 | LXFR | F | 2,237 | $16.51 | $36,933 | 9,103 Direct | -19.73% | Disposed | 4.6% (price as of 2026-10-02) |
| June 7, 2022 | LXFR | M | 5,117 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Feb. 25, 2022 | IOSP | M | 740 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Feb. 25, 2022 | IOSP | S | 29 | $97.56 | $2,829 | 7,267 Direct | -0.40% | Disposed | -0.2% (price as of 2026-10-02) |
| Feb. 25, 2022 | IOSP | S | 319 | $96.71 | $30,850 | 7,296 Direct | -4.19% | Disposed | 0.7% (price as of 2026-10-02) |
| Feb. 25, 2022 | IOSP | M | 740 | · | · | 7,615 Direct | +10.76% | Acquired | (price as of 2026-10-02) |
| Feb. 21, 2022 | IOSP | A | 326 | · | · | 326 Direct | · | Acquired | (price as of 2026-10-02) |
| July 30, 2021 | LXFR | S | 4,000 | $19.75 | $79,000 | 6,223 Direct | -39.13% | Disposed | -12.6% (price as of 2026-10-02) |
| June 9, 2021 | LXFR | A | 4,980 | · | · | 4,980 Direct | · | Acquired | (price as of 2026-10-02) |
| June 8, 2021 | LXFR | M | 4,414 | · | · | 12,174 Direct | +56.88% | Acquired | (price as of 2026-10-02) |
| June 8, 2021 | LXFR | F | 1,951 | $22.96 | $44,795 | 10,223 Direct | -16.03% | Disposed | -24.8% (price as of 2026-10-02) |
| June 8, 2021 | LXFR | M | 4,414 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 11, 2021 | IOSP | M | 293 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 11, 2021 | IOSP | M | 880 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 11, 2021 | IOSP | F | 138 | $101.35 | $13,986 | 3,314 Direct | -4.00% | Disposed | -3.9% (price as of 2026-10-02) |
| May 11, 2021 | IOSP | M | 293 | · | · | 3,452 Direct | +9.28% | Acquired | (price as of 2026-10-02) |
| May 11, 2021 | IOSP | F | 727 | $101.35 | $73,681 | 3,159 Direct | -18.71% | Disposed | -3.9% (price as of 2026-10-02) |
| May 11, 2021 | IOSP | M | 880 | $68.20 | $60,016 | 3,886 Direct | +29.27% | Acquired | 42.8% (price as of 2026-10-02) |
| May 3, 2021 | LXFR | S | 3,400 | $22.00 | $74,800 | 7,760 Direct | -30.47% | Disposed | -21.5% (price as of 2026-10-02) |
| Feb. 22, 2021 | IOSP | A | 300 | · | · | 300 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 22, 2021 | IOSP | A | 601 | · | · | 601 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 21, 2021 | IOSP | A | 652 | · | · | 6,875 Direct | +10.48% | Acquired | (price as of 2026-10-02) |
| June 4, 2020 | LXFR | A | 4,276 | · | · | 4,276 Direct | · | Acquired | (price as of 2026-10-02) |
| June 2, 2020 | LXFR | M | 2,288 | · | · | 12,298 Direct | +22.86% | Acquired | (price as of 2026-10-02) |
| June 2, 2020 | LXFR | F | 1,138 | $13.97 | $15,898 | 11,160 Direct | -9.25% | Disposed | 23.6% (price as of 2026-10-02) |
| June 2, 2020 | LXFR | M | 2,288 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Feb. 25, 2020 | IOSP | M | 850 | $70.60 | $60,010 | 0 Direct | -100.00% | Disposed | 38.0% (price as of 2026-10-02) |
| Feb. 25, 2020 | IOSP | M | 283 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| Feb. 25, 2020 | IOSP | F | 715 | $100.82 | $72,086 | 2,405 Direct | -22.92% | Disposed | -3.4% (price as of 2026-10-02) |
| Feb. 25, 2020 | IOSP | M | 850 | $70.60 | $60,010 | 3,120 Direct | +37.44% | Acquired | 38.0% (price as of 2026-10-02) |
| Feb. 25, 2020 | IOSP | F | 133 | $100.82 | $13,409 | 2,270 Direct | -5.53% | Disposed | -3.4% (price as of 2026-10-02) |
| Feb. 25, 2020 | IOSP | M | 283 | · | · | 2,403 Direct | +13.35% | Acquired | (price as of 2026-10-02) |
| Feb. 24, 2020 | IOSP | A | 627 | · | · | 627 Direct | · | Acquired | (price as of 2026-10-02) |
| Feb. 24, 2020 | IOSP | A | 313 | · | · | 313 Direct | · | Acquired | (price as of 2026-10-02) |
| May 16, 2019 | LXFR | A | 2,218 | · | · | 2,218 Direct | · | Acquired | (price as of 2026-10-02) |
| May 14, 2019 | LXFR | M | 2,390 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-02) |
| May 14, 2019 | LXFR | F | 1,113 | $24.73 | $27,524 | 9,638 Direct | -10.35% | Disposed | -30.2% (price as of 2026-10-02) |
| May 14, 2019 | LXFR | M | 2,390 | · | · | 10,751 Direct | +28.59% | Acquired | (price as of 2026-10-02) |
| May 13, 2019 | IOSP | M | 942 | $48.28 | $45,480 | 942 Direct | · | Acquired | 101.8% (price as of 2026-10-02) |
| May 13, 2019 | IOSP | M | 1,000 | · | · | 1,000 Direct | · | Acquired | (price as of 2026-10-02) |
| May 13, 2019 | IOSP | M | 404 | · | · | 404 Direct | · | Acquired | (price as of 2026-10-02) |
| May 13, 2019 | IOSP | M | 216 | $48.28 | $10,428 | 2,120 Direct | +11.34% | Acquired | 101.8% (price as of 2026-10-02) |
| May 13, 2019 | IOSP | F | 726 | $85.15 | $61,819 | 1,904 Direct | -27.60% | Disposed | 14.4% (price as of 2026-10-02) |
| May 13, 2019 | IOSP | M | 1,000 | · | · | 1,904 Direct | +110.62% | Acquired | (price as of 2026-10-02) |
| May 13, 2019 | IOSP | M | 404 | · | · | 904 Direct | +80.80% | Acquired | (price as of 2026-10-02) |
| May 8, 2019 | LXFR | S | 1,250 | $23.46 | $29,325 | 8,361 Direct | -13.01% | Disposed | -26.4% (price as of 2026-10-02) |
| Feb. 25, 2019 | IOSP | A | 370 | $81.07 | $29,996 | 5,762 Direct | +6.86% | Acquired | 20.2% (price as of 2026-10-02) |
| Feb. 25, 2019 | IOSP | A | 740 | · | · | 5,392 Direct | +15.91% | Acquired | (price as of 2026-10-02) |
| Feb. 20, 2018 | IOSP | A | 880 | $68.20 | $60,016 | 4,652 Direct | +23.33% | Acquired | 42.8% (price as of 2026-10-02) |
| Feb. 20, 2018 | IOSP | A | 293 | · | · | 3,772 Direct | +8.42% | Acquired | (price as of 2026-10-02) |
| Feb. 21, 2017 | IOSP | A | 283 | · | · | 3,479 Direct | +8.85% | Acquired | (price as of 2026-10-02) |
| Feb. 21, 2017 | IOSP | A | 850 | $70.60 | $60,010 | 3,196 Direct | +36.23% | Acquired | 38.0% (price as of 2026-10-02) |
| May 5, 2016 | IOSP | A | 1,000 | · | · | 2,346 Direct | +74.29% | Acquired | (price as of 2026-10-02) |
| May 5, 2016 | IOSP | A | 404 | · | · | 1,346 Direct | +42.89% | Acquired | (price as of 2026-10-02) |
| May 5, 2016 | IOSP | A | 942 | $48.28 | $45,480 | 942 Direct | · | Acquired | 101.8% (price as of 2026-10-02) |
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 |
|---|---|---|---|---|---|---|---|
| Feb. 27, 2023 | IOSP | Stock Option | Common Stock | $109.42 | Feb. 27, 2033 | 297 | Acquired |
| Feb. 24, 2023 | IOSP | Stock Option | Common Stock | $0.00 | Feb. 24, 2023 | 627 | Disposed |
| June 7, 2022 | LXFR | Restricted Stock Units | Ordinary Shares | · | · | 5,117 | Disposed |
| Feb. 25, 2022 | IOSP | Stock Option | Common Stock | $0.00 | Feb. 25, 2022 | 740 | Disposed |
| Feb. 21, 2022 | IOSP | Stock Option | Common Stock | $99.68 | Feb. 21, 2032 | 326 | Acquired |
| June 9, 2021 | LXFR | Restricted Stock Units | Ordinary Shares | · | · | 4,980 | Acquired |
| June 8, 2021 | LXFR | Restricted Stock Units | Ordinary Shares | · | · | 4,414 | Disposed |
| May 11, 2021 | IOSP | Stock Option | Common Stock | $0.00 | Feb. 20, 2028 | 293 | Disposed |
| May 11, 2021 | IOSP | Stock Option | Common Stock | $68.20 | Feb. 20, 2028 | 880 | Disposed |
| Feb. 22, 2021 | IOSP | stock option | Common Stock | $99.85 | Feb. 22, 2031 | 300 | Acquired |
| Feb. 22, 2021 | IOSP | stock option | Common Stock | $0.00 | Feb. 22, 2024 | 601 | Acquired |
| June 4, 2020 | LXFR | Restricted Stock Units | Ordinary Shares | · | · | 4,276 | Acquired |
| June 2, 2020 | LXFR | Restricted Stock Units | Ordinary Shares | · | · | 2,288 | Disposed |
| Feb. 25, 2020 | IOSP | stock option | Common Stock | $70.60 | Feb. 21, 2027 | 850 | Disposed |
| Feb. 25, 2020 | IOSP | Stock Option | Common Stock | $0.00 | Feb. 21, 2027 | 283 | Disposed |
| Feb. 24, 2020 | IOSP | stock option | stock option | $0.00 | Feb. 24, 2023 | 627 | Acquired |
| Feb. 24, 2020 | IOSP | Stock Option | stock option | $95.70 | Feb. 24, 2030 | 313 | Acquired |
| May 16, 2019 | LXFR | Restricted Stock Units | Ordinary Shares | · | · | 2,218 | Acquired |
| May 14, 2019 | LXFR | Restricted Stock Units | Common Stock | · | · | 2,390 | Disposed |
| May 13, 2019 | IOSP | Stock Options [F2] | Common Stock | $48.28 | May 5, 2026 | 942 | Acquired |
| May 13, 2019 | IOSP | Stock Options [F2] | Common Stock | $0.00 | May 5, 2026 | 1,000 | Acquired |
| May 13, 2019 | IOSP | Stock Options [F2] | Common Stock | $0.00 | May 5, 2026 | 404 | Acquired |
| Feb. 25, 2019 | IOSP | Stock Options | Common Stock | $81.07 | Feb. 25, 2029 | 370 | Acquired |
| Feb. 25, 2019 | IOSP | Stock Options | Common Stock | $0.00 | Feb. 25, 2029 | 740 | Acquired |
| Feb. 20, 2018 | IOSP | Stock Option | Common Stock | $68.20 | Feb. 20, 2028 | 880 | Acquired |
| Feb. 20, 2018 | IOSP | Stock Option | Common Stock | $0.00 | Feb. 20, 2028 | 293 | Acquired |
| Feb. 21, 2017 | IOSP | Stock Options | Common Stock | $0.00 | Feb. 21, 2027 | 283 | Acquired |
| Feb. 21, 2017 | IOSP | Stock Options | Common Stock | $70.60 | Feb. 21, 2027 | 850 | Acquired |
| May 5, 2016 | IOSP | Stock Option | Common Stock | $0.00 | May 5, 2026 | 1,000 | Acquired |
| May 5, 2016 | IOSP | Stock Option | Common Stock | $0.00 | May 5, 2026 | 404 | Acquired |
| May 5, 2016 | IOSP | Stock Option | Common Stock | $48.28 | May 5, 2026 | 942 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 3 holdings
Securities held when first becoming an insider, per SEC Form 3.