Mark D Papermaster
CIK 1449649 · Chief Technology Officer & EVP · last filed 2026-08-21
Mark D Papermaster is a Chief Technology Officer & EVP who has filed 160 SEC Form 4 insider transactions across 3 companies since 2009. The most recent filing, for AMD, was dated Aug 21, 2026. Across all open-market trades the lifetime net is −$241.3M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $699.2M across reported positions.
"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.
$699.16M
3
160
-$241.30M
Holdings By Company
| 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
160 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-08-21 | AMD | Mixed | −53,863 | -$13.60M | EDGAR |
| 2026-08-20 | AMD | Notice (144) | −28,811 | -$13.59M | EDGAR |
| 2026-08-18 | AMD | Mixed | +73,977 | -$27.66M | EDGAR |
| 2026-08-14 | AMD | Notice (144) | −7,369 | -$3.59M | EDGAR |
| 2026-08-11 | AMD | Mixed | +7,660 | -$2.40M | EDGAR |
| 2026-07-17 | AMD | Mixed | — | -$2.83M | EDGAR |
| 2026-07-15 | AMD | Notice (144) | −6,000 | -$3.34M | EDGAR |
| 2026-06-17 | AMD | Mixed | — | -$2.71M | EDGAR |
| 2026-06-15 | AMD | Notice (144) | −6,000 | -$3.22M | EDGAR |
| 2026-05-19 | AMD | Mixed | — | -$2.09M | EDGAR |
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.