Investors / filer profile

Papermaster Mark D

Chief Technology Officer & EVP

active in 2 companies

Pro
Bought: Pro
Sold: 56
Filings: 2
Companies: 2026-08-20
Last filed

EDGAR · CIK 0001449649 ↗

Track record

How each disclosed position did against the S&P ~6 months later

No positions we can measure against the market yet — outcomes appear once a disclosed buy is ~6 months old.

Disclosed positions

Estimated from their latest filings — positions may have changed since

Estimated positions from their latest filingsPro →

Activity

Open-market buy & sell volume

BuySell

Total +$0.0000 bought · −$37.78M sold

All filings on record

Every Form 4 transaction we track for this filer


AMDADVANCED MICRO DEVICES INC	Sell $213.8K · 450 sh	2026-08-20	—
AMDADVANCED MICRO DEVICES INC	Sell $4.52M · 9,523 sh	2026-08-20	—
AMDADVANCED MICRO DEVICES INC	Sell $3.16M · 6,667 sh	2026-08-20	—
AMDADVANCED MICRO DEVICES INC	Sell $1.23M · 2,600 sh	2026-08-20	—
AMDADVANCED MICRO DEVICES INC	Sell $1.10M · 2,326 sh	2026-08-20	—
AMDADVANCED MICRO DEVICES INC	Sell $187.9K · 400 sh	2026-08-20	—
AMDADVANCED MICRO DEVICES INC	Sell $310.7K · 664 sh	2026-08-20	—
AMDADVANCED MICRO DEVICES INC	Sell $2.88M · 6,181 sh	2026-08-20	—
AMDADVANCED MICRO DEVICES INC	Gift — · 25,052 sh	2026-08-19	—
AMDADVANCED MICRO DEVICES INC	Sell $3.22M · 6,000 sh	2026-06-15	—

AMDSell

2026-08-20 · ADVANCED MICRO DEVICES INC

$213.8K

—

AMDSell

2026-08-20 · ADVANCED MICRO DEVICES INC

$4.52M

—

AMDSell

2026-08-20 · ADVANCED MICRO DEVICES INC

$3.16M

—

AMDSell

2026-08-20 · ADVANCED MICRO DEVICES INC

$1.23M

—

AMDSell

2026-08-20 · ADVANCED MICRO DEVICES INC

$1.10M

—

AMDSell

2026-08-20 · ADVANCED MICRO DEVICES INC

$187.9K

—

AMDSell

2026-08-20 · ADVANCED MICRO DEVICES INC

$310.7K

—

AMDSell

2026-08-20 · ADVANCED MICRO DEVICES INC

$2.88M

—

AMDGift

2026-08-19 · ADVANCED MICRO DEVICES INC

25,052

—

AMDSell

2026-06-15 · ADVANCED MICRO DEVICES INC

$3.22M

—

Newest 10 of 56 filingsEvery Form 4 on record, with outcomesPro →

Outcomes measure each position — the first buy in a stock and every buy within 182 days — against the closing price ~6 months (120 trading days) later, with the S&P 500 over the same span for context. Pre-scheduled 10b5-1 plan trades are excluded from the record. Positions are estimated from the latest reported post-transaction holdings, split-adjusted, at the latest close. Built from SEC Form 4 filings and market prices — past outcomes, not predictions or advice.