DIANE K DUREN
CIK 1563283 · EVP CHIEF ADMIN OFFICER & CORP · last filed 2026-05-14
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$1.32M
Companies
3
Total Filings
41
Lifetime Open-Market Net
-$7.42M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| WERN | Director | 30,007 | $43.96 | $1.32M | $253.3K | 11 | 2026-05-14 |
| U.S. SILICA HOLDINGS, INC. (SLCA) Delisted | Director | 0 | $15.49 | $0 | $75.7K | 15 | 2024-08-01 |
| UNION PACIFIC CORP (UNPw) Delisted | EVP CHIEF ADMIN OFFICER & CORP | 140,463 | — | — | -$7.75M | 15 | 2016-11-21 |
Recent Filings · Page 3 of 5
41 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2018-05-09 | U.S. SILICA HOLDINGS, INC. (SLCA) Delisted | Exer (M) | +2,168 | $0 | EDGAR |
| 2018-05-08 | U.S. SILICA HOLDINGS, INC. (SLCA) Delisted | Exer (M) | +723 | $0 | EDGAR |
| 2018-04-26 | WERN | Buy (P) | +7,000 | $253.3K | EDGAR |
| 2018-02-26 | U.S. SILICA HOLDINGS, INC. (SLCA) Delisted | Buy (P) | +10,000 | $259.6K | EDGAR |
| 2017-08-17 | U.S. SILICA HOLDINGS, INC. (SLCA) Delisted | Grant (A) | — | $0 | EDGAR |
| 2017-05-11 | WERN | Grant (A) | +1,934 | $0 | EDGAR |
| 2016-11-21 | UNION PACIFIC CORP (UNPw) Delisted | Sell (S) | −2,840 | -$281.1K | EDGAR |
| 2016-06-06 | UNION PACIFIC CORP (UNPw) Delisted | Sell (S) | −2,500 | -$213.6K | EDGAR |
| 2016-02-08 | UNION PACIFIC CORP (UNPw) Delisted | Mixed | +14,323 | -$416.0K | EDGAR |
| 2016-02-03 | UNION PACIFIC CORP (UNPw) Delisted | Mixed | −141 | $117.3K | EDGAR |
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.