Tom Frohlich insider trades: Jade Biosciences (JBIO) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Tom reports to the SEC
Open-market buys and sales
10 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| May 16, 2025 | JBIO | ↑ Buy | 6,000 | $7.40 | $44K | Direct | May 19, 2025 (3d) |
| Feb 10, 2023 | KDNY | ↓ Sell | 3,700 | $23.75 | $88K | Direct | Feb 15, 2023 (5d) |
| Jan 31, 2023 | KDNY | ↓ Sell | 4,566 | $24.68 | $113K | Direct | Feb 2, 2023 (2d) |
| Dec 13, 2022 | KDNY | ↓ Sell | 10,000 | $25.00 | $250K | Direct | Dec 15, 2022 (2d) |
| Nov 7, 2022 | KDNY | ↓ Sell | 10,000 | $22.16 | $222K | Direct | Nov 9, 2022 (2d) |
| Oct 6, 2022 | KDNY | ↓ Sell | 7,360 | $19.69 | $145K | Direct | Oct 11, 2022 (5d) |
| Feb 11, 2022 | KDNY | ↓ Sell | 3,735 | $12.74 | $48K | Direct | Feb 14, 2022 (3d) |
| Nov 10, 2021 | KDNY | ↓ Sell | 6,230 | $15.48 | $96K | Direct | Nov 12, 2021 (2d) |
| Nov 8, 2021 | KDNY | ↓ Sell | 33,770 | $14.48 | $489K | Direct | Nov 9, 2021 (1d) |
| Sep 24, 2021 | KDNY | ↓ Sell | 20,000 | $13.00 | $260K | Direct | Sep 24, 2021 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
About Tom Frohlich's insider trades
Tom Frohlich is Chief Executive Officer at Jade Biosciences (JBIO). Since Sep 24, 2021, Tom has reported 1 open-market purchase worth $44K and 9 sales worth $1.7M on SEC Form 4. There have been no open-market trades in the last 12 months.
Their filings also include option exercises (9 filings), grants and awards (6 filings), shares returned to the company (1 filing), shares withheld for taxes (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every JBIO insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.