Innospec Inc.
US ˙ NasdaqGS ˙ US45768S1050

SecurityIOSP / Innospec Inc.
InstitutionDiversified Trust Co
Latest Disclosed Ownership5,378 shares
Latest Disclosed Value $ 392,701
Diversified Trust Co reports 40.67% increase in ownership of IOSP / Innospec Inc.

On April 16, 2026 - Diversified Trust Co filed a 13F-HR form disclosing ownership of 5,378 shares of Innospec Inc. (US:IOSP) valued at $392,702 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 9, 2026 disclosing 3,823 shares of Innospec Inc.. This represents a change in shares of 40.67% during the quarter. The current value of the position is $433,467 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)
2026-04-16 2026-03-31 13F INNOSPEC COM 45768S105 5,378 1,555 40.67 393 34.25 0.0048
2026-01-09 2025-12-31 13F INNOSPEC COM 45768S105 3,823 25 0.66 293 -0.34 0.0054
2025-10-20 2025-09-30 13F INNOSPEC COM 45768S105 3,798 288 8.21 293 -0.68 0.0059
2025-07-11 2025-06-30 13F INNOSPEC COM 45768S105 3,510 0 0.00 295 -11.14 0.0066
2025-04-24 2025-03-31 13F INNOSPEC COM 45768S105 3,510 -33 -0.93 333 -14.65 0.0082
2025-01-07 2024-12-31 13F INNOSPEC COM 45768S105 3,543 306 9.45 390 6.28 0.0095
2024-10-07 2024-09-30 13F INNOSPEC COM 45768S105 3,237 -2,092 -39.26 366 -44.38 0.0092
2024-07-16 2024-06-30 13F INNOSPEC COM 45768S105 5,329 -888 -14.28 659 -17.85 0.0186
2024-04-18 2024-03-31 13F INNOSPEC COM 45768S105 6,217 -4,937 -44.26 802 -41.70 0.0242
2024-01-08 2023-12-31 13F INNOSPEC COM 45768S105 11,154 185 1.69 1,375 22.57 0.0462
2023-11-17 2023-09-30 13F INNOSPEC COM 45768S105 10,969 269 2.51 1,121 4.38 0.0424
2023-07-18 2023-06-30 13F INNOSPEC COM 45768S105 10,700 2,189 25.72 1,075 23.02 0.0392
2023-04-07 2023-03-31 13F INNOSPEC COM 45768S105 8,511 1,966 30.04 874 29.72 0.0340
2023-01-17 2022-12-31 13F INNOSPEC COM 45768S105 6,545 -1,920 -22.68 1 -100.00 0.0280
2022-10-14 2022-09-30 13F INNOSPEC COM 45768S105 8,465 -3,507 -29.29 725 -36.79 0.0328
2022-07-12 2022-06-30 13F INNOSPEC COM 45768S105 11,972 -844 -6.59 1,147 -3.29 0.0481
2022-04-07 2022-03-31 13F INNOSPEC COM 45768S105 12,816 440 3.56 1,186 6.08 0.0414
2022-01-13 2021-12-31 13F INNOSPEC COM 45768S105 12,376 725 6.22 1,118 13.97 0.0368
2022-01-13 2021-09-30 13F INNOSPEC COM 45768S105 11,651 6,758 138.12 981 121.44 0.0353
2021-07-20 2021-06-30 13F INNOSPEC COM 45768S105 4,893 632 14.83 443 1.14 0.0160
2021-05-10 2021-03-31 13F INNOSPEC COM 45768S105 4,261 101 2.43 438 16.18 0.0169
2021-01-08 2020-12-31 13F INNOSPEC COM 45768S105 4,160 0 0.00 377 43.35 0.0153
2020-10-15 2020-09-30 13F INNOSPEC COM 45768S105 4,160 395 10.49 263 -9.62 0.0121
2020-07-07 2020-06-30 13F INNOSPEC COM 45768S105 3,765 150 4.15 291 15.94 0.0147
2020-04-10 2020-03-31 13F INNOSPEC COM 45768S105 3,615 1,090 43.17 251 -3.83 0.0147
2020-01-09 2019-12-31 13F INNOSPEC COM 45768S105 2,525 -100 -3.81 261 11.54 0.0117
2019-10-09 2019-09-30 13F INNOSPEC COM 45768S105 2,625 -475 -15.32 234 -17.31 0.0110
2019-07-12 2019-06-30 13F INNOSPEC COM 45768S105 3,100 -450 -12.68 283 -4.39 0.0135
2019-05-22 2019-03-31 13F INNOSPEC COM 45768S105 3,550 0 0.00 296 35.16 0.0144
2019-01-18 2018-12-31 13F INNOSPEC COM 45768S105 3,550 200 5.97 219 -14.79 0.0122
2018-11-26 2018-09-30 13F INNOSPEC COM 45768S105 3,350 500 17.54 257 17.89 0.0128
2018-07-23 2018-06-30 13F INNOSPEC COM 45768S105 2,850 2,850 218 0.0139
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.