이노스펙(주)
US ˙ NasdaqGS ˙ US45768S1050

SecurityIOSP / Innospec Inc.
InstitutionState Street Corp
Latest Disclosed Ownership964,335 shares
Latest Disclosed Value $ 70,415,742
State Street Corp reports 1.61% increase in ownership of IOSP / Innospec Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 964,335 shares of Innospec Inc. (US:IOSP) valued at $70,415,742 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 949,038 shares of Innospec Inc.. This represents a change in shares of 1.61% during the quarter. The current value of the position is $77,773,618 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F INNOSPEC COM 45768S105 964,335 15,297 1.61 70,416 -3.06 0.0024
2026-02-13 2025-12-31 13F INNOSPEC COM 45768S105 949,038 19,915 2.14 72,639 1.32 0.0024
2025-11-14 2025-09-30 13F INNOSPEC COM 45768S105 929,123 -41,102 -4.24 71,691 -12.13 0.0025
2025-08-14 2025-06-30 13F INNOSPEC COM 45768S105 970,225 -41,216 -4.07 81,586 -14.87 0.0031
2025-05-15 2025-03-31 13F INNOSPEC COM 45768S105 1,011,441 -24,113 -2.33 95,834 -15.92 0.0039
2025-02-14 2024-12-31 13F INNOSPEC COM 45768S105 1,035,554 39,273 3.94 113,973 1.16 0.0045
2024-11-14 2024-09-30 13F INNOSPEC COM 45768S105 996,281 20,744 2.13 112,669 -6.55 0.0046
2024-08-14 2024-06-30 13F INNOSPEC COM 45768S105 975,537 274 0.03 120,567 -4.12 0.0053
2024-05-15 2024-03-31 13F INNOSPEC COM 45768S105 975,263 15,356 1.60 125,750 6.30 0.0056
2024-02-14 2023-12-31 13F INNOSPEC COM 45768S105 959,907 51,345 5.65 118,299 27.40 0.0058
2023-11-14 2023-09-30 13F INNOSPEC COM 45768S105 908,562 24,047 2.72 92,855 4.52 0.0051
2023-08-14 2023-06-30 13F INNOSPEC COM 45768S105 884,515 21,370 2.48 88,841 0.25 0.0047
2023-05-15 2023-03-31 13F INNOSPEC COM 45768S105 863,145 26,166 3.13 88,619 2.94 0.0050
2023-05-15 2022-12-31 13F/A-99 INNOSPEC COM 45768S105 836,979 -73,993 -8.12 86,092 10.31 0.0051
2023-05-15 2022-12-31 13F INNOSPEC COM 45768S105 836,979 -73,993 86,092 0.0051
2022-11-15 2022-09-30 13F INNOSPEC COM 45768S105 910,972 -836 -0.09 78,043 -10.65 0.0049
2022-08-15 2022-06-30 13F INNOSPEC COM 45768S105 911,808 16,835 1.88 87,342 5.45 0.0052
2022-05-16 2022-03-31 13F INNOSPEC COM 45768S105 894,973 35,822 4.17 82,830 6.72 0.0041
2022-02-14 2021-12-31 13F INNOSPEC COM 45768S105 859,151 50,729 6.28 77,616 14.00 0.0037
2021-11-15 2021-09-30 13F INNOSPEC COM 45768S105 808,422 676 0.08 68,085 -6.97 0.0036
2021-08-16 2021-06-30 13F INNOSPEC COM 45768S105 807,746 14,211 1.79 73,190 -10.18 0.0039
2021-07-09 2021-03-31 13F/A-1 INNOSPEC COM 45768S105 793,535 19,603 2.53 81,488 16.05 0.0047
2021-05-17 2021-03-31 13F INNOSPEC COM 45768S105 793,535 19,603 81,488 0.0047
2021-02-16 2020-12-31 13F INNOSPEC COM 45768S105 773,932 21,920 2.91 70,219 47.47 0.0043
2020-11-10 2020-09-30 13F INNOSPEC COM 45768S105 752,012 -25,518 -3.28 47,617 -20.72 0.0033
2020-08-14 2020-06-30 13F INNOSPEC COM 45768S105 777,530 21,249 2.81 60,064 14.29 0.0044
2020-06-19 2020-03-31 13F/A-1 INNOSPEC COM 45768S105 756,281 45,385 6.38 52,554 -28.53 0.0046
2020-05-11 2020-03-31 13F INNOSPEC COM 45768S105 756,281 45,385 52,554 4,615.2994
2020-02-06 2019-12-31 13F INNOSPEC COM 45768S105 710,896 924 0.13 73,535 16.19 0.0050
2019-11-14 2019-09-30 13F INNOSPEC COM 45768S105 709,972 -63,567 -8.22 63,287 -10.33 0.0047
2019-08-14 2019-06-30 13F INNOSPEC COM 45768S105 773,539 14,648 1.93 70,578 11.58 0.0053
2019-05-15 2019-03-31 13F INNOSPEC COM 45768S105 758,891 17,342 2.34 63,254 38.12 0.0049
2019-02-12 2018-12-31 13F INNOSPEC COM 45768S105 741,549 -18,644 -2.45 45,798 -21.51 0.0042
2018-11-09 2018-09-30 13F INNOSPEC Common equity shares 45768S105 760,193 47,847 6.72 58,346 6.99 0.0045
2018-08-14 2018-06-30 13F INNOSPEC Common equity shares 45768S105 712,346 95,870 15.55 54,533 28.94 0.0046
2018-05-15 2018-03-31 13F INNOSPEC Common equity shares 45768S105 616,476 -88,938 -12.61 42,294 -15.07 0.0036
2018-02-14 2017-12-31 13F INNOSPEC Common equity shares 45768S105 705,414 111,725 18.82 49,798 36.06 0.0040
2017-11-14 2017-09-30 13F INNOSPEC Common equity shares 45768S105 593,689 -636 -0.11 36,601 -6.05 0.0032
2017-08-14 2017-06-30 13F INNOSPEC Common equity shares 45768S105 594,325 24,820 4.36 38,960 5.66 0.0034
2017-05-15 2017-03-31 13F INNOSPEC Common equity shares 45768S105 569,505 42,831 8.13 36,873 2.21 0.0033
2017-02-09 2016-12-31 13F INNOSPEC Common equity shares 45768S105 526,674 29,704 5.98 36,077 19.40 0.0034
2017-01-13 2016-09-30 13F/A-1 INNOSPEC Common equity shares 45768S105 496,970 13,816 2.86 30,215 35.97 0.0030
2016-11-14 2016-09-30 13F INNOSPEC Common equity shares 45768S105 496,970 30,215
2016-08-12 2016-06-30 13F INNOSPEC Common equity shares 45768S105 483,154 -32 -0.01 22,221 6.08 0.0024
2016-05-20 2016-03-31 13F/A-1 INNOSPEC Common equity shares 45768S105 483,186 18,263 3.93 20,947 -17.04 0.0023
2016-05-12 2016-03-31 13F INNOSPEC Common equity shares 45768S105 483,186 20,947
2016-02-16 2015-12-31 13F INNOSPEC Common equity shares 45768S105 464,923 20,973 4.72 25,250 22.28 0.0028
2015-11-16 2015-09-30 13F INNOSPEC Common equity shares 45768S105 443,950 37,927 9.34 20,649 12.87 0.0024
2015-08-13 2015-06-30 13F INNOSPEC Common equity shares 45768S105 406,023 -1,009 -0.25 18,294 -3.12 0.0020
2015-05-15 2015-03-31 13F INNOSPEC Common equity shares 45768S105 407,032 1,945 0.48 18,883 9.16 0.0019
2015-02-11 2014-12-31 13F INNOSPEC Common equity shares 45768S105 405,087 -3,668 -0.90 17,299 17.90 0.0017
2014-11-12 2014-09-30 13F/A-1 INNOSPEC Common equity shares 45768S105 408,755 -10,654 -2.54 14,672 -18.96 0.0016
2014-11-10 2014-09-30 13F INNOSPEC Common equity shares 45768S105 408,755 14,672
2014-08-12 2014-06-30 13F INNOSPEC Common equity shares 45768S105 419,409 -41,991 -9.10 18,104 -13.27 0.0020
2014-05-15 2014-03-31 13F/A-1 INNOSPEC Common equity shares 45768S105 461,400 -28,937 -5.90 20,873 -7.91 0.0024
2014-05-13 2014-03-31 13F INNOSPEC Common equity shares 45768S105 461,400 20,873
2014-02-06 2013-12-31 13F/A-1 INNOSPEC Common equity shares 45768S105 490,337 -10,155 -2.03 22,666 -2.95 0.0025
2014-02-06 2013-12-31 13F INNOSPEC Common equity shares 45768S105 483,763 16,682
2013-11-12 2013-09-30 13F INNOSPEC Common equity shares 45768S105 500,492 9,766 1.99 23,356 18.50 0.0029
2013-08-08 2013-06-30 13F INNOSPEC Common equity shares 45768S105 490,726 490,726 19,710 0.0026
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.