Papermaster Mark D

Director · Officer · AMD, PENG

As of 2026-09-16, Papermaster Mark D has 115 Form 4 transactions on record across 2 companies — 65 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Pattern in the record: open-market sales filed in August in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $648.2MIndirect: $105.9M$754.1Mas of 2026-09-16
  • Direct $648.2M
  • Indirect $105.9M
AMDdirect1,261,461 sh$646.5M
AMDindirect206,606 sh$105.9M
PENGdirect34,816 sh$1.7M

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

AMD · 113 trades
2026-08-20: Sale, 9,523 sh ($4.5M)2026-08-20: Sale, 6,667 sh ($3.2M)2026-08-20: Sale, 6,181 sh ($2.9M)2026-08-20: Sale, 2,600 sh ($1.2M)2026-08-20: Sale, 2,326 sh ($1.1M)2026-08-20: Sale, 664 sh ($311K)2026-08-20: Sale, 450 sh ($214K)2026-08-20: Sale, 400 sh ($188K)2026-08-19: Gift, 25,052 sh ($0)2026-08-15: Withheld for tax, 46,796 sh ($24.1M)2026-08-15: Withheld for tax, 1,203 sh ($619K)2026-08-15: Award / grant, 7,903 sh ($0)2026-08-15: Award / grant, 11,855 sh ($0)2026-08-15: Option exercise, 3,056 sh ($0)2026-08-15: Option exercise, 118,920 sh ($0)2026-08-15: Option exercise, 121,976 sh ($0)2026-08-14: Sale, 7,369 sh ($3.6M)2026-08-14: Option exercise, 7,369 sh ($625K)2026-08-14: Option exercise, 7,369 sh ($0)2026-08-09: Withheld for tax, 4,973 sh ($2.4M)2026-08-09: Option exercise, 3,238 sh ($0)2026-08-09: Option exercise, 3,964 sh ($0)2026-08-09: Option exercise, 5,431 sh ($0)2026-08-09: Option exercise, 12,633 sh ($0)2026-07-15: Sale, 6,000 sh ($3.3M)2026-07-15: Option exercise, 6,000 sh ($509K)2026-07-15: Option exercise, 6,000 sh ($0)2026-06-15: Sale, 6,000 sh ($3.2M)2026-06-15: Option exercise, 6,000 sh ($509K)2026-06-15: Option exercise, 6,000 sh ($0)2026-05-15: Sale, 6,000 sh ($2.6M)2026-05-15: Option exercise, 6,000 sh ($509K)2026-05-15: Option exercise, 6,000 sh ($0)2026-05-11: Gift, 2,350 sh ($0)2026-04-24: Sale, 31,320 sh ($11.0M)2026-04-16: Sale, 27,109 sh ($7.5M)2026-04-15: Sale, 6,000 sh ($1.5M)2026-04-15: Option exercise, 6,000 sh ($509K)2026-04-15: Option exercise, 6,000 sh ($0)2026-04-06: Sale, 3,293 sh ($741K)2026-03-04: Sale, 3,034 sh ($607K)2026-02-24: Gift, 206,606 sh ($0)2026-02-24: Gift, 206,606 sh ($0)2026-02-24: Gift, 206,606 sh ($0)2025-12-02: Gift, 500 sh ($0)2025-11-14: Sale, 5,277 sh ($1.3M)2025-11-14: Option exercise, 17,108 sh ($585K)2025-11-14: Sale, 2,100 sh ($509K)2025-11-14: Sale, 1,848 sh ($445K)2025-11-14: Sale, 1,876 sh ($442K)2025-11-14: Sale, 1,700 sh ($406K)2025-11-14: Sale, 1,600 sh ($389K)2025-11-14: Sale, 1,100 sh ($260K)2025-11-14: Sale, 1,007 sh ($246K)2025-11-14: Sale, 600 sh ($143K)2025-11-14: Option exercise, 17,108 sh ($0)2025-10-15: Sale, 5,695 sh ($1.3M)2025-10-15: Sale, 5,516 sh ($1.2M)2025-10-15: Sale, 2,665 sh ($593K)2025-10-15: Option exercise, 16,800 sh ($574K)2025-10-15: Sale, 1,700 sh ($380K)2025-10-15: Sale, 1,024 sh ($227K)2025-10-15: Sale, 200 sh ($45K)2025-10-15: Option exercise, 16,800 sh ($0)2025-09-15: Sale, 13,624 sh ($2.2M)2025-09-15: Option exercise, 16,800 sh ($574K)2025-09-15: Sale, 3,176 sh ($507K)2025-09-15: Option exercise, 16,800 sh ($0)2025-08-15: Withheld for tax, 16,557 sh ($2.9M)2025-08-15: Sale, 8,695 sh ($1.5M)2025-08-15: Sale, 7,096 sh ($1.3M)2025-08-15: Option exercise, 16,800 sh ($574K)2025-08-15: Sale, 1,009 sh ($181K)2025-08-15: Option exercise, 16,800 sh ($0)2025-08-15: Award / grant, 24,852 sh ($0)2025-08-15: Option exercise, 42,075 sh ($0)2025-08-15: Gift, 32,383 sh ($0)2025-08-15: Award / grant, 36,674 sh ($0)2025-08-15: Option exercise, 42,075 sh ($0)2025-08-15: Award / grant, 12,224 sh ($0)2025-08-09: Withheld for tax, 4,973 sh ($859K)2025-08-09: Option exercise, 3,238 sh ($0)2025-08-09: Option exercise, 3,964 sh ($0)2025-08-09: Option exercise, 5,431 sh ($0)2025-08-09: Option exercise, 12,633 sh ($0)2025-07-15: Sale, 9,949 sh ($1.5M)2025-07-15: Sale, 5,387 sh ($843K)2025-07-15: Option exercise, 17,998 sh ($344K)2025-07-15: Sale, 1,500 sh ($236K)2025-07-15: Sale, 1,162 sh ($181K)2025-07-15: Option exercise, 17,998 sh ($0)2025-06-13: Sale, 16,586 sh ($1.9M)2025-06-13: Option exercise, 17,500 sh ($334K)2025-06-13: Sale, 914 sh ($107K)2025-06-13: Option exercise, 17,500 sh ($0)2025-05-15: Sale, 9,610 sh ($1.1M)2025-05-15: Sale, 7,590 sh ($881K)2025-05-15: Option exercise, 17,500 sh ($334K)2025-05-15: Sale, 300 sh ($35K)2025-05-15: Option exercise, 17,500 sh ($0)2025-04-15: Sale, 10,089 sh ($961K)2025-04-15: Sale, 7,411 sh ($709K)2025-04-15: Option exercise, 17,500 sh ($334K)2025-04-15: Option exercise, 17,500 sh ($0)2025-03-14: Sale, 15,708 sh ($1.6M)2025-03-14: Option exercise, 17,500 sh ($334K)2025-03-14: Sale, 1,792 sh ($180K)2025-03-14: Option exercise, 17,500 sh ($0)2025-02-14: Sale, 12,300 sh ($1.4M)2025-02-14: Sale, 4,617 sh ($521K)2025-02-14: Option exercise, 17,500 sh ($334K)2025-02-14: Sale, 583 sh ($67K)2025-02-14: Option exercise, 17,500 sh ($0)
PENG · 2 trades
2026-02-06: Award / grant, 10,034 sh ($0)2025-02-07: Award / grant, 8,397 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-08-20AMDSale9,523 @ $474.35$4.5M−0.7% of holding1,261,911Form 4
2026-08-20AMDSale6,667 @ $473.47$3.2M−0.5% of holding1,271,434Form 4
2026-08-20AMDSale6,181 @ $466.60$2.9M−0.5% of holding1,284,091Form 4
2026-08-20AMDSale2,600 @ $472.36$1.2M−0.2% of holding1,278,101Form 4
2026-08-20AMDSale2,326 @ $471.44$1.1M−0.2% of holding1,280,701Form 4
2026-08-20AMDSale664 @ $467.88$311K−0.1% of holding1,283,427Form 4
2026-08-20AMDSale450 @ $475.19$214K−0.0% of holding1,261,461Form 4
2026-08-20AMDSale400 @ $469.85$188K−0.0% of holding1,283,027Form 4
2026-08-14AMDSale7,369 @ $487.34$3.6M−0.6% of holding1,241,347Form 4
2026-07-15AMDSale6,000 @ $556.43$3.3M−0.5% of holding1,233,687Form 4
2026-06-15AMDSale6,000 @ $536.33$3.2M−0.5% of holding1,233,687Form 4
2026-05-15AMDSale6,000 @ $433.79$2.6M−0.5% of holding1,233,687Form 4
2026-04-24AMDSale31,320 @ $350.00$11.0M−2.5% of holding1,236,037Form 4
2026-04-16AMDSale27,109 @ $275.00$7.5M−2.1% of holding1,267,357Form 4
2026-04-15AMDSale6,000 @ $255.54$1.5M−0.5% of holding1,294,466Form 4
2026-04-06AMDSale3,293 @ $225.00$741K−0.3% of holding1,294,466Form 4
2026-03-04AMDSale3,034 @ $200.00$607K−0.2% of holding1,297,759Form 4
2025-11-14AMDSale5,277 @ $240.13$1.3M−0.3% of holding1,721,060Form 4
2025-11-14AMDSale2,100 @ $242.39$509K−0.1% of holding1,717,112Form 4
2025-11-14AMDSale1,848 @ $240.92$445K−0.1% of holding1,719,212Form 4
2025-11-14AMDSale1,876 @ $235.87$442K−0.1% of holding1,729,737Form 4
2025-11-14AMDSale1,700 @ $238.86$406K−0.1% of holding1,726,337Form 4
2025-11-14AMDSale1,600 @ $243.35$389K−0.1% of holding1,715,512Form 4
2025-11-14AMDSale1,100 @ $236.48$260K−0.1% of holding1,728,637Form 4
2025-11-14AMDSale1,007 @ $243.98$246K−0.1% of holding1,714,505Form 4
2025-11-14AMDSale600 @ $238.00$143K−0.0% of holding1,728,037Form 4
2025-10-15AMDSale5,695 @ $224.51$1.3M−0.3% of holding1,720,221Form 4
2025-10-15AMDSale5,516 @ $225.59$1.2M−0.3% of holding1,714,705Form 4
2025-10-15AMDSale2,665 @ $222.58$593K−0.2% of holding1,727,616Form 4
2025-10-15AMDSale1,700 @ $223.40$380K−0.1% of holding1,725,916Form 4
2025-10-15AMDSale1,024 @ $221.42$227K−0.1% of holding1,730,281Form 4
2025-10-15AMDSale200 @ $226.17$45K−0.0% of holding1,714,505Form 4
2025-09-15AMDSale13,624 @ $159.08$2.2M−0.8% of holding1,717,681Form 4
2025-09-15AMDSale3,176 @ $159.70$507K−0.2% of holding1,714,505Form 4
2025-08-15AMDSale8,695 @ $177.65$1.5M−0.5% of holding1,729,475Form 4
2025-08-15AMDSale7,096 @ $178.43$1.3M−0.4% of holding1,722,379Form 4
2025-08-15AMDSale1,009 @ $179.82$181K−0.1% of holding1,721,370Form 4
2025-07-15AMDSale9,949 @ $153.86$1.5M−0.6% of holding1,721,759Form 4
2025-07-15AMDSale5,387 @ $156.47$843K−0.3% of holding1,715,210Form 4
2025-07-15AMDSale1,500 @ $157.35$236K−0.1% of holding1,713,710Form 4
2025-07-15AMDSale1,162 @ $155.34$181K−0.1% of holding1,720,597Form 4
2025-06-13AMDSale16,586 @ $115.97$1.9M−1.0% of holding1,714,624Form 4
2025-06-13AMDSale914 @ $116.54$107K−0.1% of holding1,713,710Form 4
2025-05-15AMDSale9,610 @ $117.00$1.1M−0.6% of holding1,714,010Form 4
2025-05-15AMDSale7,590 @ $116.03$881K−0.4% of holding1,723,620Form 4
2025-05-15AMDSale300 @ $117.46$35K−0.0% of holding1,713,710Form 4
2025-04-15AMDSale10,089 @ $95.29$961K−0.6% of holding1,721,121Form 4
2025-04-15AMDSale7,411 @ $95.71$709K−0.4% of holding1,713,710Form 4
2025-03-14AMDSale15,708 @ $100.22$1.6M−0.9% of holding1,715,502Form 4
2025-03-14AMDSale1,792 @ $100.68$180K−0.1% of holding1,713,710Form 4
2025-02-14AMDSale12,300 @ $113.77$1.4M−0.7% of holding1,714,293Form 4
2025-02-14AMDSale4,617 @ $112.94$521K−0.3% of holding1,726,593Form 4
2025-02-14AMDSale583 @ $114.46$67K−0.0% of holding1,713,710Form 4
62 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-08-19AMDGift25,0521,290,272Form 4
2026-08-15AMDWithheld for tax46,7961,316,527Form 4
2026-08-15AMDWithheld for tax1,2031,315,324Form 4
2026-08-15AMDAward / grant7,9037,903Form 4
2026-08-15AMDAward / grant11,85511,855Form 4
2026-08-15AMDOption exercise3,0569,168Form 4
2026-08-15AMDOption exercise118,9200Form 4
2026-08-15AMDOption exercise121,9761,363,323Form 4
2026-08-14AMDOption exercise7,3691,248,716Form 4
2026-08-14AMDOption exercise7,3690Form 4
2026-08-09AMDWithheld for tax4,9731,241,347Form 4
2026-08-09AMDOption exercise3,2386,476Form 4
2026-08-09AMDOption exercise3,9643,964Form 4
2026-08-09AMDOption exercise5,4310Form 4
2026-08-09AMDOption exercise12,6331,246,320Form 4
2026-07-15AMDOption exercise6,0001,239,687Form 4
2026-07-15AMDOption exercise6,0007,369Form 4
2026-06-15AMDOption exercise6,0001,239,687Form 4
2026-06-15AMDOption exercise6,00013,369Form 4
2026-05-15AMDOption exercise6,0001,239,687Form 4
2026-05-15AMDOption exercise6,00019,369Form 4
2026-05-11AMDGift2,3501,233,687Form 4
2026-04-15AMDOption exercise6,0001,300,466Form 4
2026-04-15AMDOption exercise6,00025,369Form 4
2026-02-24AMDGift206,6061,300,793Form 4
2026-02-24AMDGift206,606206,606Form 4
2026-02-24AMDGift206,6061,507,399Form 4
2026-02-06PENGAward / grant10,03434,816Form 4
2025-12-02AMDGift5001,714,005Form 4
2025-11-14AMDOption exercise17,1081,731,613Form 4
2025-11-14AMDOption exercise17,1080Form 4
2025-10-15AMDOption exercise16,8001,731,305Form 4
2025-10-15AMDOption exercise16,80017,108Form 4
2025-09-15AMDOption exercise16,8001,731,305Form 4
2025-09-15AMDOption exercise16,80033,908Form 4
2025-08-15AMDWithheld for tax16,5571,714,505Form 4
2025-08-15AMDOption exercise16,8001,738,170Form 4
2025-08-15AMDOption exercise16,80050,708Form 4
2025-08-15AMDAward / grant24,85224,852Form 4
2025-08-15AMDOption exercise42,0751,731,062Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.