THOMAS J SEIFERT
CIK 1473289 · Chief Financial Officer · last filed 2026-08-06
"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
$148.63M
Companies
4
Total Filings
263
Lifetime Open-Market Net
-$294.38M
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 |
|---|---|---|---|---|---|---|---|
| NET | Chief Financial Officer | 206,127 | $300.27 | $61.89M | -$290.90M | 149 | 2026-08-06 |
| WOLF | Director | 20,476 | $32.87 | $673.0K | $0 | 2 | 2025-02-03 |
| IPGP | Director | 8,946 | $90.23 | $807.2K | -$3.48M | 13 | 2022-05-25 |
| AMD | SVP, CFO | 176,383 | $483.36 | $85.26M | $0 | 12 | 2012-06-19 |
Recent Filings · Page 13 of 27
263 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-02-02 | NET | Notice (144) | −15,000 | -$1.19M | EDGAR |
| 2024-01-26 | NET | Grant (A) | +122,970 | $0 | EDGAR |
| 2024-01-19 | NET | Mixed | — | -$1.17M | EDGAR |
| 2024-01-18 | NET | Notice (144) | −15,000 | -$1.16M | EDGAR |
| 2024-01-03 | NET | Notice (144) | −15,000 | -$1.19M | EDGAR |
| 2024-01-03 | NET | Mixed | — | -$1.15M | EDGAR |
| 2023-12-19 | NET | Mixed | — | -$1.27M | EDGAR |
| 2023-12-18 | NET | Notice (144) | −15,000 | -$1.28M | EDGAR |
| 2023-12-14 | NET | Mixed | — | -$2.75M | EDGAR |
| 2023-12-13 | NET | Notice (144) | −34,329 | -$2.68M | EDGAR |
Form 4 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.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.