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David Landless

IOSP
DIRECTOR · INNOSPEC INC. · CIK 0001667356
FILING MIX · LIFETIME48%/52%
BUYS
24
SELLS
26
TOTAL VALUE
$828.8K
COMPANIES
2
ACTIVE SINCE
Feb 2020
HOLDINGS NOW
18,972
AVG SELL PX
$40.03
TRADE KIND
SHOWING 50 / 50
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
7 backtested trades · 8 horizons · 9 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by David Landless, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d7+85.71%-3.56%-1.09%-2.47%-3.78%—
14d7+85.71%-6.34%-2.48%-3.86%-3.75%—
30d7+71.43%-1.84%-1.58%-0.27%+3.39%—
60d7+57.14%-2.11%+0.74%-2.86%-3.67%—
90d7+28.57%+3.10%-1.10%+1.25%+2.64%—
180d7(3 pending)+50.00%-5.32%+0.11%-5.42%-4.97%—
1y7(3 pending)+50.00%-4.14%-4.95%+0.80%+3.83%—
2y7(3 pending)+50.00%-1.23%+11.66%-12.90%-9.24%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
IOSP · 7,632 shares · as of Feb 27, 2026
02,0574,1136,1708,226202120222023202420252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
FLOW · 24 buys / 26 sellsCOVERAGE · 25 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
IOSP
INNOSPEC INC.
SALE
594$76.56$45.5K7,632Feb 27, 2026Mar 3, 2026 ↗View →
IOSP
INNOSPEC INC.
SALE
287$76.30$21.9K7,939Feb 27, 2026Mar 6, 2026 ↗View →
IOSP
INNOSPEC INC.
SALE
307$76.79$23.6K7,632Feb 27, 2026Mar 6, 2026 ↗View →
IOSP
INNOSPEC INC.
PURCHASEGRANT
Stock grant
1,539——8,226Feb 23, 2026Feb 24, 2026 ↗View →
IOSP
INNOSPEC INC.
PURCHASEGRANT
Stock grant
1,209——6,687Feb 24, 2025Feb 27, 2025 ↗View →
IOSP
INNOSPEC INC.
SALE
306$105.07$32.2K5,478Feb 21, 2025Feb 25, 2025 ↗View →
IOSP
INNOSPEC INC.
PURCHASEGRANT
Stock grant
782——5,784Feb 26, 2024Feb 28, 2024 ↗View →
IOSP
INNOSPEC INC.
SALE
282$123.77$34.9K5,002Feb 22, 2024Feb 23, 2024 ↗View →
IOSP
INNOSPEC INC.
PURCHASEGRANT
Stock grant
594——4,031Feb 27, 2023Mar 2, 2023 ↗View →
IOSP
INNOSPEC INC.
PURCHASEGRANT
Stock grant
297——297Feb 27, 2023Mar 2, 2023 ↗View →
IOSP
INNOSPEC INC.
PURCHASE
627——3,732Feb 24, 2023Feb 27, 2023 ↗View →
IOSP
INNOSPEC INC.
SALE
295$110.09$32.5K3,437Feb 24, 2023Feb 27, 2023 ↗View →
IOSP
INNOSPEC INC.
SALE
627——0Feb 24, 2023Feb 27, 2023 ↗View →
LXFR
LUXFER HOLDINGS PLC
SALE
2,237$16.51$36.9K9,103Jun 7, 2022Jun 9, 2022 ↗View →
LXFR
LUXFER HOLDINGS PLC
SALE
5,117——0Jun 7, 2022Jun 9, 2022 ↗View →
LXFR
LUXFER HOLDINGS PLC
PURCHASE
5,117——11,340Jun 7, 2022Jun 9, 2022 ↗View →
IOSP
INNOSPEC INC.
PURCHASE
740——7,615Feb 25, 2022Mar 1, 2022 ↗View →
IOSP
INNOSPEC INC.
SALE
740——0Feb 25, 2022Mar 1, 2022 ↗View →
IOSP
INNOSPEC INC.
SALE
319$96.71$30.9K7,296Feb 25, 2022Mar 1, 2022 ↗View →
IOSP
INNOSPEC INC.
SALE
29$97.56$2.8K7,267Feb 25, 2022Mar 1, 2022 ↗View →
IOSP
INNOSPEC INC.
PURCHASEGRANT
Stock grant
326——326Feb 21, 2022Feb 23, 2022 ↗View →
LXFR
LUXFER HOLDINGS PLC
SALE
4,000$19.75$79.0K6,223Jul 30, 2021Jul 30, 2021 ↗View →
LXFR
LUXFER HOLDINGS PLC
PURCHASEGRANT
Stock grant
4,980——4,980Jun 9, 2021Jun 10, 2021 ↗View →
LXFR
LUXFER HOLDINGS PLC
PURCHASE
4,414——12,174Jun 8, 2021Jun 10, 2021 ↗View →
LXFR
LUXFER HOLDINGS PLC
SALE
4,414——0Jun 8, 2021Jun 10, 2021 ↗View →
LXFR
LUXFER HOLDINGS PLC
SALE
1,951$22.96$44.8K10,223Jun 8, 2021Jun 10, 2021 ↗View →
IOSP
INNOSPEC INC.
SALE
880——0May 11, 2021May 24, 2021 ↗View →
IOSP
INNOSPEC INC.
SALE
138$101.35$14.0K3,314May 11, 2021May 24, 2021 ↗View →
IOSP
INNOSPEC INC.
SALE
727$101.35$73.7K3,159May 11, 2021May 24, 2021 ↗View →
IOSP
INNOSPEC INC.
PURCHASE
880$68.20$60.0K3,886May 11, 2021May 24, 2021 ↗View →
IOSP
INNOSPEC INC.
SALE
293——0May 11, 2021May 24, 2021 ↗View →
IOSP
INNOSPEC INC.
PURCHASE
293——3,452May 11, 2021May 24, 2021 ↗View →
LXFR
LUXFER HOLDINGS PLC
SALE
3,400$22.00$74.8K7,760May 3, 2021May 4, 2021 ↗View →
IOSP
INNOSPEC INC.
PURCHASEGRANT
Stock grant
601——3,006Feb 22, 2021Feb 24, 2021 ↗View →
IOSP
INNOSPEC INC.
PURCHASEGRANT
Stock grant
300——300Feb 22, 2021Feb 24, 2021 ↗View →
IOSP
INNOSPEC INC.
PURCHASEGRANT
Stock grant
300——300Feb 22, 2021Mar 2, 2021 ↗View →
IOSP
INNOSPEC INC.
PURCHASEGRANT
Stock grant
601——601Feb 22, 2021Mar 2, 2021 ↗View →
IOSP
INNOSPEC INC.
PURCHASEGRANT
Stock grant
652——6,875Feb 21, 2021Feb 23, 2022 ↗View →
LXFR
LUXFER HOLDINGS PLC
PURCHASEGRANT
Stock grant
4,276——4,276Jun 4, 2020Jun 4, 2020 ↗View →
LXFR
LUXFER HOLDINGS PLC
SALE
2,288——0Jun 2, 2020Jun 4, 2020 ↗View →
LXFR
LUXFER HOLDINGS PLC
SALE
1,138$13.97$15.9K11,160Jun 2, 2020Jun 4, 2020 ↗View →
LXFR
LUXFER HOLDINGS PLC
PURCHASE
2,288——12,298Jun 2, 2020Jun 4, 2020 ↗View →
IOSP
INNOSPEC INC.
PURCHASE
283——2,403Feb 25, 2020Feb 25, 2020 ↗View →
IOSP
INNOSPEC INC.
SALE
283——0Feb 25, 2020Feb 25, 2020 ↗View →
IOSP
INNOSPEC INC.
SALE
133$100.82$13.4K2,270Feb 25, 2020Feb 25, 2020 ↗View →
IOSP
INNOSPEC INC.
SALE
715$100.82$72.1K2,405Feb 25, 2020Feb 25, 2020 ↗View →
IOSP
INNOSPEC INC.
SALE
850$70.60$60.0K0Feb 25, 2020Feb 25, 2020 ↗View →
IOSP
INNOSPEC INC.
PURCHASE
850$70.60$60.0K3,120Feb 25, 2020Feb 25, 2020 ↗View →
IOSP
INNOSPEC INC.
PURCHASEGRANT
Stock grant
313——313Feb 24, 2020Feb 26, 2020 ↗View →
IOSP
INNOSPEC INC.
PURCHASEGRANT
Stock grant
627——627Feb 24, 2020Feb 26, 2020 ↗View →
Other insiders · IOSP
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About this filer
CIK 0001667356
ROLE
Director
PRIMARY
IOSP
COMPANIES
2
ACTIVE SINCE
Feb 2020
MARKETPEEL · /INSIDER/0001667356DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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