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$MAIR
Madison Air Solutions Corp
- Insider
- Ernesto Bertarelli
- Bought
- $219.00M
- Filed
- Aug 27, 2026
- 233K+
- 7,500+
- < 60 s
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The daily trading plan
Every market morning: the highest-conviction insider buys, scored 0 to 100 against price, liquidity and the insider’s own record.
Company & insider profiles
Filing history, price charts and the track record of every officer and director on the tape. Free and open to browse.
What InsiderAlpha tracks
We watch SEC EDGAR around the clock and surface every Form 4, Form 144 and 8-K the moment it lands - deduplicated, parsed, and sorted into the trades that matter. The patterns that tend to precede price moves, like cluster buys and first-time officer purchases, rise to the top.
Form 4, within a minute
Open-market buys and sells from officers, directors and 10% owners, parsed and deduplicated as they land.
See the live feedForm 144 early warnings
Planned sales of restricted stock, filed before the trade itself happens.
Track Form 1448-K events, as they file
Every 8-K as the SEC receives it, with its item numbers and a link to the original, matched against the insider tape around it.
Today's 8-Ks10b5-1 plans flagged
Pre-scheduled trades are separated from discretionary ones, so a routine sale never reads like conviction.
The rules insiders file underTop Insider Purchases This Week
Largest open-market insider buys (Form 4, transaction code P) by total dollar value over the last 7 days. Open any ticker for the full transaction history and 8-K filings for that company.
| Date | Company | Insider | Value |
|---|---|---|---|
| Aug 27, 2026 | $MAIR Madison Air Solutions Corp | Ernesto Bertarelli | $219.00M |
| Aug 26, 2026 |  $RSG REPUBLIC SERVICES, INC. | CASCADE INVESTMENT, L.L.C. | $127.03M |
| Aug 28, 2026 | $RSG REPUBLIC SERVICES, INC. | CASCADE INVESTMENT, L.L.C. | $123.51M |
| Aug 24, 2026 |  $SCTH Securetech Innovations, Inc. | J. Scott Sitra | $100.00M |
| Aug 24, 2026 | $RSG REPUBLIC SERVICES, INC. | CASCADE INVESTMENT, L.L.C. | $88.18M |
| Aug 26, 2026 |  $CCD Calamos Dynamic Convertible & Income Fund | MetLife Investment Management, LLC | $22.00M |
| Aug 28, 2026 |  $ATTO Attovia Therapeutics, Inc. | GOLDMAN SACHS GROUP INC | $12.53M |
| Aug 28, 2026 | $ATTO Attovia Therapeutics, Inc. | Colin Walsh | $12.53M |
| Aug 26, 2026 |  $CHW Calamos Global Dynamic Income Fund | MetLife Investment Management, LLC | $11.00M |
| Aug 25, 2026 |  $BABA Alibaba Group Holding Ltd | Joseph C. Tsai | $10.42M |
Most Researched Companies on InsiderAlpha
Most Active Tickers (Last 14 Days)
Companies with the highest Form 4 filing volume in the last two weeks. High filing counts often signal an open trading window after an earnings release, an option-grant date, or a 10b5-1 plan kicking in.
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role · size · recency · clustering · technicals
Why InsiderAlpha
Officer and director purchases are one of the few signals where the insider has both better information than the public and a legal obligation to disclose within two business days. That disclosure stream becomes a daily, scored buy list: every filing is checked against the company’s technicals (RSI, ATR, MA-50), liquidity (50-day average volume), and the insider’s own filing history. A free account gets that plan one trading day after it is published, plus the whole archive; the paid plans add today’s plan at the open, mobile alerts, a trade journal and live prices. Company and insider profile pages are free and indexable.
Browse the Database
- All companies with recent insider activity
- Top corporate insiders (last 30 days)
- Latest SEC Form 4 filings
- Form 4 filings today, as they land
- Insider trading screener
- Most active insiders this week
- Top insider buys this week
- Recent insider purchases (live feed)
- Stocks with cluster insider buying
- CEO and CFO stock purchases
- Insider selling, last 14 days
- Form 144 tracker (planned sales)
- Today’s Form 8-K filings
- Insider activity by sector
- IPO tracker
- Form 4 alerts: email, RSS and push
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Plain-English guides to corporate insider reporting and the signals worth acting on.
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