Avantor, Inc.
US ˙ NYSE ˙ US05352A1007

SecurityAVTR / Avantor, Inc.
InstitutionNeuberger Berman Group LLC
Latest Disclosed Ownership21,440 shares
Latest Disclosed Value $ 168,086
Neuberger Berman Group LLC reports 85.03% decrease in ownership of AVTR / Avantor, Inc.

On May 14, 2026 - Neuberger Berman Group LLC filed a 13F-HR form disclosing ownership of 21,440 shares of Avantor, Inc. (US:AVTR) valued at $168,090 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 143,248 shares of Avantor, Inc.. This represents a change in shares of -85.03% during the quarter. The current value of the position is $194,461 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-14 2026-03-31 13F AVANTOR Common 05352A100 21,440 -121,808 -85.03 168 -89.76 0.0001
2026-02-13 2025-12-31 13F AVANTOR Common 05352A100 143,248 4,984 3.60 1,642 -4.87 0.0012
2025-11-12 2025-09-30 13F AVANTOR Common 05352A100 138,264 26,658 23.89 1,726 14.85 0.0013
2025-08-25 2025-06-30 13F/A-1 AVANTOR Common 05352A100 111,606 -1,146 -1.02 1,502 -17.79 0.0012
2025-08-13 2025-06-30 13F AVANTOR Common 05352A100 111,606 -1,146 1,502 0.0006
2025-05-13 2025-03-31 13F AVANTOR Common 05352A100 112,752 -753,999 -86.99 1,828 -90.00 0.0015
2025-02-13 2024-12-31 13F AVANTOR Common 05352A100 866,751 -70,919 -7.56 18,262 -24.71 0.0145
2024-11-14 2024-09-30 13F AVANTOR Common 05352A100 937,670 -476,196 -33.68 24,258 -19.07 0.0189
2024-11-14 2024-06-30 13F/A-1 AVANTOR Common 05352A100 1,413,866 763,141 117.28 29,974 80.14 0.0246
2024-08-13 2024-06-30 13F AVANTOR Common 05352A100 1,413,866 763,141 29,974 0.0246
2024-11-14 2024-03-31 13F/A-1 AVANTOR Common 05352A100 650,725 -114,352 -14.95 16,639 -4.73 0.0138
2024-05-13 2024-03-31 13F AVANTOR Common 05352A100 650,725 -114,352 16,639 0.0138
2024-11-14 2023-12-31 13F/A-2 AVANTOR Common 05352A100 765,077 -295,851 -27.89 17,467 -21.90 0.0152
2024-02-09 2023-12-31 13F AVANTOR Common 05352A100 765,077 -295,851 17,467 0.0152
2023-11-14 2023-09-30 13F AVANTOR Common 05352A100 1,060,928 -1,053,446 -49.82 22,364 -48.50 0.0204
2023-08-11 2023-06-30 13F AVANTOR Common 05352A100 2,114,374 8,174 0.39 43,429 -2.46 0.0388
2023-05-12 2023-03-31 13F AVANTOR Common 05352A100 2,106,200 70,535 3.46 44,525 3.71 0.0413
2023-02-13 2022-12-31 13F AVANTOR Common 05352A100 2,035,665 -797,258 -28.14 42,932 -22.68 0.0421
2022-11-15 2022-09-30 13F AVANTOR Common 05352A100 2,832,923 -576,860 -16.92 55,525 -47.64 0.0580
2022-08-15 2022-06-30 13F AVANTOR Common 05352A100 3,409,783 26,032 0.77 106,044 -7.33 0.1066
2022-05-23 2022-03-31 13F/A-1 AVANTOR Common 05352A100 3,383,751 681,467 25.22 114,438 0.88 0.0970
2022-05-13 2022-03-31 13F AVANTOR Common 05352A100 3,383,751 681,467 114,156 0.0509
2022-02-11 2021-12-31 13F AVANTOR Common 05352A100 2,702,284 274,729 11.32 113,444 14.56 0.0890
2021-11-12 2021-09-30 13F AVANTOR Common 05352A100 2,427,555 61,167 2.58 99,030 18.08 0.0866
2021-08-13 2021-06-30 13F AVANTOR Common 05352A100 2,366,388 756,398 46.98 83,865 80.33 0.0732
2021-05-13 2021-03-31 13F AVANTOR Common 05352A100 1,609,990 693,473 75.66 46,507 80.26 0.0444
2021-02-10 2020-12-31 13F AVANTOR Common 05352A100 916,517 -40,704 -4.25 25,800 19.84 0.0268
2020-11-12 2020-09-30 13F AVANTOR Common 05352A100 957,221 -43,113 -4.31 21,528 26.59 0.0255
2020-08-13 2020-06-30 13F AVANTOR Common 05352A100 1,000,334 139,050 16.14 17,006 58.09 0.0211
2020-05-14 2020-03-31 13F AVANTOR Common 05352A100 861,284 352,059 69.14 10,757 16.39 0.0164
2020-02-12 2019-12-31 13F AVANTOR Common 05352A100 509,225 -64,388 -11.22 9,242 9.61 0.0108
2019-11-13 2019-09-30 13F AVANTOR Common 05352A100 573,613 -20,848 -3.51 8,432 -25.70 0.0103
2019-08-13 2019-06-30 13F AVANTOR Common 05352A100 594,461 594,461 11,348 0.0136
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.