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GORDON WILLIAM B

Director at DUOL

CIK 0001229590 · All filings on EDGAR ↗

0Buy txns

6Sell txns

+$0Reported buys

−$1.5MReported sells

0Cluster events

cumulative reported $ across trade dates, 2026-09-08 → 2026-09-08

Sectors: Information Technology

Career transactions in this dataset

Filing date	Trade date	Ticker	Insider	Type	Shares	Price	Value	Cluster
2026-09-10	2026-09-08	DUOL	GORDON WILLIAM B Director 10b5-1	S	800	$143.83	−$115k	—
2026-09-10	2026-09-08	DUOL	GORDON WILLIAM B Director 10b5-1	S	2,742	$144.59	−$396k	—
2026-09-10	2026-09-08	DUOL	GORDON WILLIAM B Director 10b5-1	S	3,483	$145.91	−$508k	—
2026-09-10	2026-09-08	DUOL	GORDON WILLIAM B Director 10b5-1	S	2,675	$146.58	−$392k	—
2026-09-10	2026-09-08	DUOL	GORDON WILLIAM B Director 10b5-1	S	200	$148.68	−$30k	—
2026-09-10	2026-09-08	DUOL	GORDON WILLIAM B Director 10b5-1	S	100	$151.64	−$15k	—

Known data limitations

Form 4 lag: insiders have 2 business days to file after a trade (weekends and holidays extend this), and this site re-ingests once daily — a transaction can appear here roughly three business days after it happened.
13F lag: quarterly 13F-HR holdings cover the prior quarter-end and are due 45 days after it — every institutional position shown here is at least 45 days old by construction, often more.
CUSIP→ticker gaps: 13F positions are reported by CUSIP; some holdings cannot be matched to a current ticker (delistings, corporate actions, thin metadata) and appear without one or are omitted from ticker-level views.
EDGAR timing variability: institutions file at different hours and days within their windows; amended filings (4/A, 13F-HR/A) can restate earlier periods, so historical aggregates may change between batches.

Insider Atlas is a descriptive research site, not investment advice — see the methodology for the full provenance chain.