NewMarket Corporation
US ˙ NYSE ˙ US6515871076

SecurityNEU / NewMarket Corporation
InstitutionSilvercrest Asset Management Group Llc
Latest Disclosed Ownership577 shares
Latest Disclosed Value $ 369,828
Silvercrest Asset Management Group Llc ownership in NEU / NewMarket Corporation

On May 15, 2026 - Silvercrest Asset Management Group Llc filed a 13F-HR form disclosing ownership of 577 shares of NewMarket Corporation (US:NEU) valued at $369,828 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 577 shares of NewMarket Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $450,914 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 NEWMARKET CORP COM COM 651587107 577 0 0.00 370 -6.82 0.0027
2026-02-17 2025-12-31 13F NEWMARKET COM 651587107 577 -20 -3.35 397 -19.84 0.0027
2025-11-14 2025-09-30 13F NEWMARKET CORP COM COM 651587107 597 0 0.00 494 19.90 0.0033
2025-08-14 2025-06-30 13F NEWMARKET COM 651587107 597 0 0.00 412 21.89 0.0028
2025-05-15 2025-03-31 13F NEWMARKET COM 651587107 597 0 0.00 338 7.30 0.0024
2025-02-14 2024-12-31 13F NEWMARKET COM 651587107 597 0 0.00 315 -4.26 0.0021
2024-11-14 2024-09-30 13F NEWMARKET CORP COM COM 651587107 597 60 11.17 329 19.20 0.0022
2024-08-15 2024-06-30 13F/A-1 NEWMARKET CORP COM COM 651587107 537 0 0.00 277 -18.82 0.0019
2024-08-14 2024-06-30 13F NEWMARKET CORP COM COM 651587107 1,074 537 554 0.0013
2024-05-15 2024-03-31 13F NEWMARKET CORP COM COM 651587107 537 0 0.00 341 16.04 0.0023
2024-02-14 2023-12-31 13F NEWMARKET CORP COM COM 651587107 537 0 0.00 293 20.08 0.0021
2023-11-14 2023-09-30 13F NEWMARKET CORP COM COM 651587107 537 0 0.00 244 13.49 0.0019
2023-08-14 2023-06-30 13F NEWMARKET CORP COM COM 651587107 537 537 216 0.0015
2021-08-16 2021-06-30 13F NEWMARKET CORP COM COM 651587107 0 -607 -100.00 0 -100.00
2021-05-17 2021-03-31 13F NEWMARKET CORP COM COM 651587107 607 70 13.04 231 7.94 0.0016
2021-02-16 2020-12-31 13F NEWMARKET CORP COM COM 651587107 537 537 214 0.0016
2020-11-16 2020-09-30 13F NEWMARKET CORP COM COM 651587107 0 -537 -100.00 0 -100.00
2020-08-14 2020-06-30 13F NEWMARKET CORP COM COM 651587107 537 0 0.00 215 4.37 0.0019
2020-05-15 2020-03-31 13F NEWMARKET CORP COM COM 651587107 537 0 0.00 206 -21.07 0.0022
2020-02-14 2019-12-31 13F NEWMARKET CORP COM COM 651587107 537 0 0.00 261 2.76 0.0020
2019-11-14 2019-09-30 13F NEWMARKET CORP COM COM 651587107 537 0 0.00 254 18.14 0.0021
2019-08-14 2019-06-30 13F NEWMARKET CORP COM COM 651587107 537 0 0.00 215 -7.73 0.0020
2019-05-15 2019-03-31 13F NEWMARKET CORP COM COM 651587107 537 0 0.00 233 5.43 0.0023
2019-02-14 2018-12-31 13F NEWMARKET CORP COM COM 651587107 537 0 0.00 221 1.38 0.0024
2018-11-14 2018-09-30 13F NEWMARKET CORP COM COM 651587107 537 -23 -4.11 218 -3.96 0.0020
2018-08-14 2018-06-30 13F NEWMARKET CORP COM COM 651587107 560 23 4.28 227 5.09 0.0021
2018-05-15 2018-03-31 13F NEWMARKET CORP COM COM 651587107 537 537 216 0.0021
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.