// company-profile
Newmarket Corp
NEUExchangeNYSESectorIndustrial Organic ChemicalsInc.VAFilings59Insiders15
// api This Newmarket Corp insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
Mixed insider activity over the last 30 days: 0 purchases and 0 sales (0 transactions total).
// 90-day insight
Over the last 90 days, Newmarket Corp insiders filed 1 Form 4 transaction, none of which were open-market purchases or sales.
- Most active insider: GOTTWALD THOMAS E with 1 transaction totaling $0.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Newmarket Corp as of 2026-03-31
Total reported AUM
$3.06B
QoQ change
-13.9%
Reporting period
2026-03-31
#1
LONDON CO OF VIRGINIA
CIK 1259887
$295.5M
461K shares
#2
BlackRock, Inc.
CIK 2012383
$263.5M
411K shares
#3
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
$227.1M
354K shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jun 4, 2026 | GOTTWALD THOMAS E | NEU | Gift | 1,500 | $0.00 | $0K |
| Feb 24, 2026 | Xu Ting | NEU | Purchase | 400 | $619.21 | $248K |
| Feb 19, 2026 | FITZGERALD TIMOTHY K | NEU | Tax Withholding | 34 | $607.04 | $21K |
| Feb 18, 2026 | GOTTWALD THOMAS E | NEU | Gift | 180 | $0.00 | $0K |
| Feb 18, 2026 | GOTTWALD THOMAS E | NEU | Gift | 120 | $0.00 | $0K |
45 more transactions hidden
Free account · No credit card required
Building something? Get API access →
Popular companies on Form4API
Browse insider trading activity for other actively-filed companies.