| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
10% Owner | Director, 10% Owner | Director
2 companies
James Fu Bin Lu is 10% Owner at GRND, with reported holdings spanning 2 companies. James Fu Bin Lu's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $240.9M at current prices.
Our model assigns James Fu Bin Lu a below-average insider score of 46/100, based on 57 past trades. Over a 12-month horizon, 36.4% of those trades were profitable, with an average 12-month return of -31.4%.
James Fu Bin Lu's largest disclosed position is in GRND as 10% Owner, worth about $240.9M. The GRND filings lean toward selling, a net 18,324,679 shares.
James Fu Bin Lu has 43 Form 4 filings on record from November 2022 to February 2026, across 2 companies: 10% Owner at Grindr (GRND), 2022–2026; Director at TuSimple (TSPH), 2022–2024.
The 86 reported transactions were 70 open-market sales, 6 option exercises, 5 stock awards and 2 option or other derivative awards, plus smaller numbers of other types.
Counted by filing, the open-market trades come to no purchases and 29 sales worth about $265.4M.
The largest open-market sale was 1,554,712 shares of GRND at an average $23.94 on May 13, 2025, about $37.2M. Twelve months later GRND was down 39%.
None of the 29 sales since April 2023 was marked as made under a Rule 10b5-1 trading plan.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Feb 6, 2026 | GRND Grindr Inc. | 10% Owner | Sell | 1,450,000 | $10.07 | $14,595,500.00 | -7.3% | +35.0% | - | |
| Feb 3, 2026 | GRND Grindr Inc. | 10% Owner | Sell | 612,766 | $11.03 | $6,756,134.25 | -3.0% | +30.1% | - | |
| Jan 27, 2026 | GRND Grindr Inc. | 10% Owner | Sell | 639,000 | $11.88 | $7,588,830.00 | -3.0% | +15.5% | - | |
| Jan 22, 2026 | GRND Grindr Inc. | 10% Owner | Sell | 600,000 | $12.01 | $7,206,000.00 | -2.8% | +12.3% | - | |
| Jan 12, 2026 | GRND Grindr Inc. | 10% Owner | Sell | 415,307 | $13.22 | $5,491,482.22 | -98.9% | -3.4% | - | |
| Jan 5, 2026 | GRND Grindr Inc. | 10% Owner | Sell | 92,071 | $13.53 | $1,245,720.63 | -18.0% | -9.8% | - | |
| Dec 29, 2025 | GRND Grindr Inc. | 10% Owner | Sell | 3,628 | $13.50 | $48,978.00 | -0.7% | -8.1% | - | |
| Dec 26, 2025 | GRND Grindr Inc. | 10% Owner | Sell | 143,994 | $13.71 | $1,974,358.94 | -21.8% | -6.7% | - | |
| Nov 18, 2025 | GRND Grindr Inc. | 10% Owner | Sell | 75,748 | $13.65 | $1,033,960.20 | -0.3% | -25.3% | - | |
| Nov 17, 2025 | GRND Grindr Inc. | 10% Owner | Sell | 367,981 | $14.10 | $5,188,143.66 | -1.6% | -24.9% | - |