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Michael Quartieri is Director at Grandstand. OQRO lists 1 transaction filed with the SEC under this name, the latest on May 26, 2026, each linked to the official Form 4.
Director
Disclosures on record
1
Companies involved
1
Michael Quartieri bought shares on the open market in 2020 and 2022, and has not bought since 2022 across 3 companies. Sales in 1 of the 15 years since 2012.
Michael Quartieri reported 4 open-market purchases and 8 sales since 2012; purchases in 2 different years, most recently 2022.
| Year | Bought | Sold |
|---|---|---|
| 2022 | $526K3×3 trades | — |
| 2020 | $56K1×1 trade | — |
| 2012 | — | $2.99M8×8 trades |
Open-market purchases (code P) and sales (code S) on Forms 4 and 5. Up to Sep 2024 from the SEC's Insider Transactions Data Sets; since Oct 2024 from each filing as it is published. A trade filed twice (an amendment) counts once. Dollar totals use the price the filer reported; lines with no price count as trades without a value.
GrandstandGRSD
May 21, 202668Kdisclosed May 26
DetailsOfficial recordAs of the latest filing on , Michael Quartieri reported holding 839,738 shares of Ridenow Group (RDNW), worth about $3.74M at the last close of $4 (Nov 13, 2026). Holdings are also on file at Grandstand (GRSD); together they are worth about $3.82M.
| Company | Shares reported | How held | Last close | Value at last close | Reported |
|---|---|---|---|---|---|
| Ridenow Group RDNW | 839,738 | 840K direct | $4 | $3.74M | Jan 13, 2026 |
| Grandstand GRSD | 105,514 | 106K direct | $1 | $87K | May 21, 2026 |
Is this Michael Quartieri’s net worth? No. A Form 4 reports the shares an insider owns in one company after each transaction, directly or through trusts and entities. It says nothing about cash, other investments, property or debt, options not yet exercised are not counted here, and a holding reported some time ago may have changed without a new filing. The value is shares times the last stored close, not a price anyone received. Sources: the filings listed below, each linked to EDGAR. Compare with the biggest insider stakes.
On the latest SEC Form 4, dated Jan 13, 2026, Michael Quartieri reported holding 839,738 shares of Ridenow Group (RDNW). At the last close of $4 on Nov 13, 2026, that is about $3.74M. This is the stake disclosed in filings, not a net worth.
Michael Quartieri bought shares on the open market in 2020 and 2022, and has not bought since 2022 across 3 companies. Sales in 1 of the 15 years since 2012.
In SEC filings since 2012: the latest open-market purchase is from 2022; the latest open-market sale is from 2012.
3 companies: Dave & Buster'S Entertainment (PLAY, 2022), Liveone (LVO, 2020), Las Vegas Sands (LVS, 2012).
Michael Quartieri reported 0 open-market purchases and 8 sales here, 2012.
Michael Quartieri reported 3 open-market purchases and 0 sales here, 2022.
Michael Quartieri reported 1 open-market purchase and 0 sales here, 2020.
Closing prices and the companies' last annual figures; a − or + is a fact of the close, not a forecast.
