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Stella-Jones Inc.[SJ · TSX]

Muzyka, DouglasDirector

BUY$221.2KScore 9.0/10May 15

Douglas Muzyka, a director at Stella-Jones, bought 3,028 shares at $73.05 per share on May 15, spending just over $221,000. This is his first purchase on record as an insider, and he's the only insider buying the stock in the past month.

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Insiders file with regulators

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Common questions

Yes. InsiderEdge pulls directly from SEDI.ca — the official Canadian insider trading database maintained by regulators. All trades are from real filings.

TSX, TSXV, and CSE-listed companies. US-listed stocks are not included.

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SEDI is raw and difficult to parse. InsiderEdge adds AI-powered explanations, signal scores, cluster detection, and alerts so you can focus on what matters.

The signal score (1–10) rates how significant a trade is based on four factors: the insider's seniority (CEO/CFO weight more than directors), the transaction size relative to their compensation, timing relative to company events, and whether multiple insiders are acting simultaneously. Scores of 6+ appear in the feed. Scores of 8+ are considered high conviction.

Academic research consistently shows that open-market purchases by corporate insiders — especially cluster buys by senior officers — outperform the broader market. InsiderEdge surfaces the signals most strongly associated with performance: first-time buys, cluster activity, and large purchases by CEOs and CFOs. This is not a guarantee, and past patterns don't ensure future results.

News coverage of insider trades is inconsistent and often delayed by days or weeks — if it appears at all. InsiderEdge pulls directly from SEDI filings, which insiders are legally required to submit within a few days of trading. You see the data before it makes headlines, not after.

InsiderEdge is built on SEDI, Canada's official insider trading database maintained by regulators. It covers TSX and TSXV-listed companies. US markets use a different regulatory system (SEC Form 4) and are not currently covered.

After your 14-day free trial, you'll move to the Free plan automatically — no charge, no credit card required to start. The Free plan shows trades with a 48-hour delay and includes up to 3 price alerts. You can upgrade to Pro ($19/month or $99/year) at any time to get real-time filings and unlimited alerts.

InsiderEdge scrapes SEDI continuously. Most trades appear within minutes of the filing going live on SEDI.ca. Pro users see filings in real time. Free users see the same trades with a 48-hour delay.