Margaret Chow is CLO & VP at Couchbase, Inc. (BASE). They have made 4 open-market trades across 1 company since 2023, most recently 2025-09-24.
CIK 0001869739
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 4 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| BASE | 191,917 | $4.7M |
Shares reported on the most recent Form 4, priced at the 2025-09-18 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| BASE | SELL · 10b5-1 | 2025-03-20 | 2025-03-24 | $14.00 | $181K | +9.8% | +11.0% | +69.2% |
| BASE | SELL · 10b5-1 | 2025-03-03 | 2025-03-05 | $17.48 | $352K | -21.4% | -18.7% | +7.5% |
| BASE | SELL · 10b5-1 | 2025-02-03 | 2025-02-05 | $17.85 | $812K | +0.5% | -10.5% | -8.3% |
| BASE | SELL · 10b5-1 | 2025-01-02 | 2025-01-06 | $15.52 | $638K | +1.4% | +16.2% | -15.8% |
| BASE | SELL · 10b5-1 | 2024-11-19 | 2024-11-21 | $20.00 | $4K | -21.8% | -27.6% | -12.2% |
| BASE | SELL · 10b5-1 | 2024-11-13 | 2024-11-15 | $20.02 | $42K | +5.3% | -19.5% | -2.6% |
| BASE | SELL · 10b5-1 | 2024-07-25 | 2024-07-29 | $20.00 | $46K | -10.5% | -6.2% | -17.0% |
| BASE | SELL · 10b5-1 | 2024-05-17 | 2024-05-21 | $27.53 | $246K | -22.7% | -40.9% | -34.4% |
| BASE | SELL · 10b5-1 | 2024-04-01 | 2024-04-03 | $26.19 | $256K | -9.5% | -2.4% | -32.0% |
| BASE | SELL · 10b5-1 | 2024-03-06 | 2024-03-08 | $30.53 | $305K | -2.4% | -4.7% | -34.0% |
| BASE | SELL · 10b5-1 | 2024-02-02 | 2024-02-06 | $27.50 | $138K | +1.9% | +6.7% | -5.0% |
| BASE | SELL · 10b5-1 | 2024-01-23 | 2024-01-25 | $25.00 | $75K | +9.9% | +12.9% | -3.1% |
| BASE | SELL · 10b5-1 | 2024-01-02 | 2024-01-04 | $21.35 | $50K | +17.5% | +33.7% | +27.8% |
| BASE | SELL | 2023-12-18 | 2023-12-20 | $23.59 | $235K | -10.8% | +4.6% | +17.8% |
| BASE | SELL · 10b5-1 | 2023-11-14 | 2023-11-16 | $18.00 | $21K | +11.1% | +36.7% | +56.5% |
| BASE | SELL | 2023-09-19 | 2023-09-21 | $18.28 | $181K | -4.3% | -14.0% | +30.0% |
| BASE | SELL · 10b5-1 | 2023-09-07 | 2023-09-11 | $18.00 | $21K | -8.7% | -13.6% | +13.8% |
| BASE | SELL · 10b5-1 | 2023-08-01 | 2023-08-03 | $16.49 | $19K | -4.7% | +6.7% | -7.4% |
| BASE | SELL · 10b5-1 | 2023-07-03 | 2023-07-06 | $15.80 | $18K | +11.5% | +8.5% | +13.6% |
| BASE | SELL | 2023-06-16 | 2023-06-21 | $15.77 | $154K | +5.1% | +8.3% | +22.5% |
| BASE | SELL · 10b5-1 | 2023-05-31 | 2023-06-02 | $20.16 | $44K | -24.3% | -28.5% | -20.4% |
| BASE | SELL · 10b5-1 | 2023-05-01 | 2023-05-03 | $15.26 | $18K | +13.2% | +42.9% | +12.6% |
| BASE | SELL · 10b5-1 | 2023-04-03 | 2023-04-05 | $14.00 | $16K | +25.5% | +14.6% | +12.5% |
| BASE | SELL | 2023-03-16 | 2023-03-20 | $13.59 | $17K | +1.5% | +24.9% | +13.3% |
| BASE | SELL · 10b5-1 | 2023-03-02 | 2023-03-06 | $15.28 | $18K | -17.6% | -17.4% | +33.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.