HEIDEN WILLIAM K
SEC Form 4 insider trading activity
HEIDEN WILLIAM K has filed 2 SEC Form 4 filings (2 transaction rows) across 2 companies, including ATRA, MGNX, with disclosures dating back to 2026. 2 of those filings fall inside the rolling window. Most recent filing: Jun 11, 2026.
Companies traded
Other insiders at ATRA
No insider trading data found for HEIDEN WILLIAM K.
Frequently asked questions
How many SEC Form 4 filings has HEIDEN WILLIAM K made?
HEIDEN WILLIAM K has filed 2 SEC Form 4 filings (2 transaction rows) across 2 companies, including ATRA, MGNX since 2026.
Which companies does HEIDEN WILLIAM K trade?
HEIDEN WILLIAM K has filed SEC Form 4 disclosures for 2 companies, including ATRA, MGNX.
When was HEIDEN WILLIAM K's most recent SEC Form 4 filing?
HEIDEN WILLIAM K's most recent SEC Form 4 filing on Tracefour is dated Jun 11, 2026.