Avantor, Inc.
US ˙ NYSE ˙ US05352A1007

SecurityAVTR / Avantor, Inc.
InstitutionWhittier Trust Co
Latest Disclosed Ownership1,923 shares
Latest Disclosed Value $ 15,346
Whittier Trust Co reports 66.26% decrease in ownership of AVTR / Avantor, Inc.

On April 28, 2026 - Whittier Trust Co filed a 13F-HR form disclosing ownership of 1,923 shares of Avantor, Inc. (US:AVTR) valued at $15,076 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 5,699 shares of Avantor, Inc.. This represents a change in shares of -66.26% during the quarter. The current value of the position is $18,307 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)
2026-04-28 2026-03-31 13F AVANTOR common 05352A100 1,923 -3,776 -66.26 15 -78.26 0.0001
2026-01-26 2025-12-31 13F AVANTOR common 05352A100 5,699 -218,291 -97.46 70 -97.84 0.0008
2025-10-31 2025-09-30 13F AVANTOR common 05352A100 223,990 -903 -0.40 3,201 5.75 0.0364
2025-07-30 2025-06-30 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 224,893 3,508 1.58 3,027 -15.62 0.0365
2025-05-02 2025-03-31 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 221,385 7,268 3.39 3,586 -20.47 0.0500
2025-02-11 2024-12-31 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 214,117 5,081 2.43 4,509 -16.58 0.0594
2024-10-21 2024-09-30 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 209,036 9,321 4.67 5,405 27.69 0.0723
2024-07-29 2024-06-30 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 199,715 9,449 4.97 4,234 -12.95 0.0601
2024-05-02 2024-03-31 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 190,266 7,297 3.99 4,863 16.48 0.0709
2024-01-11 2023-12-31 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 182,969 4,609 2.58 4,175 11.13 0.0677
2023-10-27 2023-09-30 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 178,360 7,054 4.12 3,758 6.85 0.0668
2023-07-24 2023-06-30 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 171,306 3,667 2.19 3,517 -0.73 0.0611
2023-04-21 2023-03-31 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 167,639 22,641 15.61 3,542 15.87 0.0645
2023-01-25 2022-12-31 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 144,998 -18,097 -11.10 3,058 -4.32 0.0595
2022-10-21 2022-09-30 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 163,095 6,769 4.33 3,195 -34.26 0.0670
2022-07-28 2022-06-30 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 156,326 2,425 1.58 4,860 -6.61 0.0982
2022-04-29 2022-03-31 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 153,901 10,532 7.35 5,204 -13.84 0.0878
2022-01-19 2021-12-31 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 143,369 4,770 3.44 6,040 6.56 0.0981
2021-11-01 2021-09-30 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 138,599 5,403 4.06 5,668 19.86 0.1032
2021-07-29 2021-06-30 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 133,196 8,514 6.83 4,729 31.14 0.0842
2021-04-26 2021-03-31 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 124,682 12,687 11.33 3,606 14.40 0.0700
2021-01-29 2020-12-31 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 111,995 6,044 5.70 3,152 32.33 0.0673
2020-10-30 2020-09-30 13F AVANTOR INC COM US MID-CAP EQUITIES 05352A100 105,951 105,951 2,382 0.0567
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.