Innospec Inc.
US ˙ NasdaqGS ˙ US45768S1050

SecurityIOSP / Innospec Inc.
InstitutionPrudential Financial Inc
Latest Disclosed Ownership25,269 shares
Latest Disclosed Value $ 1,845,142
Prudential Financial Inc reports 7.69% increase in ownership of IOSP / Innospec Inc.

On May 13, 2026 - Prudential Financial Inc filed a 13F-HR form disclosing ownership of 25,269 shares of Innospec Inc. (US:IOSP) valued at $1,845,142 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 23,464 shares of Innospec Inc.. This represents a change in shares of 7.69% during the quarter. The current value of the position is $2,036,681 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)
2026-05-13 2026-03-31 13F INNOSPEC COM 45768S105 25,269 1,805 7.69 1,845 2.79 0.0013
2026-02-13 2025-12-31 13F INNOSPEC COM 45768S105 23,464 -1,695 -6.74 1,796 -7.52 0.0022
2025-11-13 2025-09-30 13F INNOSPEC COM 45768S105 25,159 -890 -3.42 1,941 -36.28 0.0023
2025-08-12 2025-06-30 13F INNOSPEC COM 45768S105 26,049 1,650 6.76 3,046 5.11 0.0039
2025-05-13 2025-03-31 13F INNOSPEC COM 45768S105 24,399 -970 -3.82 2,899 -4.01 0.0041
2025-02-11 2024-12-31 13F INNOSPEC COM 45768S105 25,369 -332 -1.29 3,020 3.89 0.0041
2024-11-14 2024-09-30 13F INNOSPEC COM 45768S105 25,701 -922 -3.46 2,907 -11.67 0.0041
2024-08-13 2024-06-30 13F INNOSPEC COM 45768S105 26,623 -1,161 -4.18 3,290 -8.15 0.0049
2024-05-14 2024-03-31 13F INNOSPEC COM 45768S105 27,784 -960 -3.34 3,582 1.13 0.0050
2024-02-13 2023-12-31 13F INNOSPEC COM 45768S105 28,744 -358 -1.23 3,542 19.10 0.0054
2023-11-13 2023-09-30 13F INNOSPEC COM 45768S105 29,102 -1,715 -5.57 2,974 -3.91 0.0047
2023-08-11 2023-06-30 13F INNOSPEC COM 45768S105 30,817 6,569 27.09 3,095 24.35 0.0045
2023-05-12 2023-03-31 13F INNOSPEC COM 45768S105 24,248 -735 -2.94 2,490 -3.11 0.0039
2023-02-14 2022-12-31 13F INNOSPEC COM 45768S105 24,983 -110 -0.44 2,570 19.49 0.0043
2022-11-04 2022-09-30 13F INNOSPEC COM 45768S105 25,093 -7,465 -22.93 2,150 -31.05 0.0036
2022-08-15 2022-06-30 13F INNOSPEC COM 45768S105 32,558 -2,765 -7.83 3,118 -4.62 0.0049
2022-05-13 2022-03-31 13F INNOSPEC COM 45768S105 35,323 -2,001 -5.36 3,269 -3.05 0.0043
2022-02-14 2021-12-31 13F INNOSPEC COM 45768S105 37,324 10,312 38.18 3,372 48.22 0.0042
2021-11-15 2021-09-30 13F INNOSPEC COM 45768S105 27,012 -233 -0.86 2,275 -7.86 0.0032
2021-08-16 2021-06-30 13F INNOSPEC COM 45768S105 27,245 -1,657 -5.73 2,469 -16.81 0.0034
2021-05-12 2021-03-31 13F INNOSPEC COM 45768S105 28,902 -5,160 -15.15 2,968 -3.98 0.0044
2021-08-16 2020-12-31 13F/A-1 INNOSPEC COM 0090 45768S105 34,062 -2,160 -5.96 3,091 34.74 0.0052
2021-02-16 2020-12-31 13F INNOSPEC COM 45768S105 34,062 -2,160 3,090 0.0052
2020-11-16 2020-09-30 13F INNOSPEC COM 45768S105 36,222 -1,988 -5.20 2,294 -22.29 0.0043
2020-08-12 2020-06-30 13F INNOSPEC COM 45768S105 38,210 -9,173 -19.36 2,952 -10.36 0.0057
2020-05-12 2020-03-31 13F INNOSPEC COM 45768S105 47,383 -810 -1.68 3,293 -33.94 0.0073
2020-02-11 2019-12-31 13F INNOSPEC COM 45768S105 48,193 -10,613 -18.05 4,985 -4.90 0.0074
2019-11-13 2019-09-30 13F INNOSPEC COM 45768S105 58,806 -20,099 -25.47 5,242 -27.19 0.0083
2019-08-08 2019-06-30 13F INNOSPEC COM 45768S105 78,905 7,536 10.56 7,200 21.03 0.0112
2019-05-15 2019-03-31 13F INNOSPEC COM 45768S105 71,369 30,064 72.79 5,949 133.20 0.0099
2019-02-07 2018-12-31 13F INNOSPEC COM 45768S105 41,305 279 0.68 2,551 -18.99 0.0045
2018-11-07 2018-09-30 13F INNOSPEC COM 45768S105 41,026 -640 -1.54 3,149 -1.29 0.0046
2018-08-13 2018-06-30 13F INNOSPEC COM 45768S105 41,666 -520 -1.23 3,190 10.23 0.0048
2018-05-04 2018-03-31 13F INNOSPEC COM 45768S105 42,186 400 0.96 2,894 -1.90 0.0044
2018-02-13 2017-12-31 13F INNOSPEC COM 45768S105 41,786 -4,090 -8.92 2,950 4.31 0.0040
2017-11-02 2017-09-30 13F INNOSPEC COM 45768S105 45,876 496 1.09 2,828 -4.94 0.0047
2017-08-07 2017-06-30 13F INNOSPEC COM 45768S105 45,380 840 1.89 2,975 3.16 0.0044
2017-05-10 2017-03-31 13F INNOSPEC COM 45768S105 44,540 -8,130 -15.44 2,884 -20.07 0.0045
2017-02-07 2016-12-31 13F INNOSPEC COM 45768S105 52,670 -108,580 -67.34 3,608 -63.21 0.0058
2016-11-04 2016-09-30 13F INNOSPEC COM 45768S105 161,250 3,080 1.95 9,806 34.81 0.0162
2016-08-09 2016-06-30 13F INNOSPEC COM 45768S105 158,170 -18,870 -10.66 7,274 -5.24 0.0122
2016-05-09 2016-03-31 13F INNOSPEC COM 45768S105 177,040 -53,900 -23.34 7,676 -38.80 0.0137
2016-02-12 2015-12-31 13F INNOSPEC COM 45768S105 230,940 11,640 5.31 12,542 22.96 0.0227
2015-11-10 2015-09-30 13F INNOSPEC COM 45768S105 219,300 53,700 32.43 10,200 36.75 0.0201
2015-08-06 2015-06-30 13F INNOSPEC COM 45768S105 165,600 0 0.00 7,459 -2.90 0.0132
2015-05-01 2015-03-31 13F INNOSPEC COM 45768S105 165,600 144,240 675.28 7,682 742.32 0.0133
2015-02-06 2014-12-31 13F INNOSPEC COM 45768S105 21,360 21,360 0.00 912 0.0017
2014-11-12 2014-09-30 13F INNOSPEC COM 45768S105 0 -5,778 -100.00 0 -100.00
2014-08-13 2014-06-30 13F INNOSPEC COM 45768S105 5,778 5,778 249 0.0004
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.