Mark D Papermaster
CIK 1449649 · Chief Technology Officer & EVP · last filed 2026-08-21
"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
$699.16M
Companies
3
Total Filings
160
Lifetime Open-Market Net
-$241.30M
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 |
|---|---|---|---|---|---|---|---|
| AMD | Chief Technology Officer & EVP | 1,468,517 | $459.61 | $674.95M | -$239.14M | 123 | 2026-08-21 |
| Penguin Solutions, Inc. (SGH) Delisted | Director | 34,816 | $20.85 | $725.9K | $0 | 4 | 2026-02-10 |
| AAPL | Senior Vice President | 74,480 | $325.13 | $24.22M | -$2.16M | 4 | 2010-08-05 |
Recent Filings · Page 4 of 16
160 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 |
|---|---|---|---|---|---|
| 2025-08-19 | AMD | Mixed | −6,865 | -$5.36M | EDGAR |
| 2025-08-15 | AMD | Notice (144) | −16,800 | -$2.99M | EDGAR |
| 2025-08-12 | AMD | Mixed | +7,660 | -$859.1K | EDGAR |
| 2025-07-17 | AMD | Mixed | — | -$2.45M | EDGAR |
| 2025-07-15 | AMD | Notice (144) | −17,998 | -$2.79M | EDGAR |
| 2025-06-17 | AMD | Mixed | — | -$1.70M | EDGAR |
| 2025-06-13 | AMD | Notice (144) | −17,500 | -$2.03M | EDGAR |
| 2025-05-19 | AMD | Mixed | — | -$1.71M | EDGAR |
| 2025-05-15 | AMD | Notice (144) | −17,500 | -$2.04M | EDGAR |
| 2025-04-17 | AMD | Mixed | — | -$1.34M | 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.