Ken S. Ansin is Director at ENTERPRISE BANCORP INC /MA/ (EBTC). They have made 30 open-market trades across 2 companies since 2006, most recently 2026-05-19.
CIK 0001282759
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.
20 open-market purchases totalling $691K since 2006, against 10 sales. Across 20 scored buys the stock is down 2.6% at ninety days, and 3.3 points behind the S&P over the same stretch.
20 scored purchases · one row per filing · discretionary only
| Ticker | Shares | Value |
|---|---|---|
| INDB | 5,937 | $474K |
| EBTC | 6,831 | $271K |
| Total | $745K |
Shares reported on the most recent Form 4, priced at the 2026-05-21 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 5% | 10% | 5% |
| Avg Move | -5.9% | -1.8% | -2.6% |
| Alpha | -0.8% | -1.6% | -3.3% |
| Scored | 20 | 20 | 20 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| INDB | SELL | 2025-11-14 | 2025-11-17 | $69.06 | $3.7M | +8.8% | +15.8% | +25.2% |
| INDB | SELL | 2025-11-10 | 2025-11-12 | $69.94 | $10.1M | +2.2% | +10.5% | +21.9% |
| INDB | SELL | 2025-09-09 | 2025-09-11 | $69.95 | $3.5M | +0.8% | -3.1% | +9.3% |
| EBTC | SELL | 2024-02-27 | 2024-02-29 | $25.25 | $3.0M | -7.1% | -7.8% | -10.8% |
| EBTC | BUY | 2023-05-04 | 2023-05-08 | $26.37 | $53K | +4.1% | +17.8% | +16.4% |
| EBTC | SELL | 2021-05-18 | 2021-05-20 | $33.65 | $174K | +2.4% | -2.8% | -2.6% |
| EBTC | SELL | 2021-05-13 | 2021-05-17 | $34.14 | $321K | -0.1% | -0.1% | -0.8% |
| EBTC | SELL | 2021-05-10 | 2021-05-12 | $34.56 | $117K | +1.3% | +1.6% | +5.7% |
| EBTC | SELL | 2021-05-05 | 2021-05-07 | $35.74 | $346K | -7.4% | -1.6% | -6.7% |
| EBTC | SELL | 2021-03-18 | 2021-03-22 | $31.99 | $268K | +1.2% | +2.9% | +3.3% |
| EBTC | BUY | 2020-02-28 | 2020-02-28 | $27.61 | $28K | -8.6% | -8.5% | -16.0% |
| EBTC | BUY | 2018-10-23 | 2018-10-25 | $31.05 | $182K | -4.6% | +5.6% | -0.5% |
| EBTC | SELL | 2017-09-12 | 2017-09-13 | $33.40 | $153K | +10.5% | +12.5% | +3.4% |
| EBTC | BUY | 2011-01-26 | 2011-01-27 | $11.09 | $24K | -6.4% | -3.0% | -3.0% |
| EBTC | BUY | 2010-10-27 | 2010-10-28 | $10.96 | $15K | -6.4% | -3.0% | -3.0% |
| EBTC | BUY | 2010-10-26 | 2010-10-27 | $10.97 | $22K | -6.4% | -3.0% | -3.0% |
| EBTC | BUY | 2010-01-28 | 2010-02-01 | $11.28 | $23K | -6.4% | -3.0% | -3.0% |
| EBTC | BUY | 2009-11-19 | 2009-11-23 | $10.85 | $150K | -6.4% | -3.0% | -3.0% |
| EBTC | BUY | 2008-11-06 | 2008-11-10 | $10.72 | $1K | -6.4% | -3.0% | -3.0% |
| EBTC | BUY | 2008-10-31 | 2008-11-04 | $12.26 | $1K | -6.4% | -3.0% | -3.0% |
| EBTC | BUY | 2008-10-30 | 2008-10-31 | $11.56 | $2K | -6.4% | -3.0% | -3.0% |
| EBTC | BUY | 2007-09-21 | 2007-09-24 | $13.50 | $1K | -6.4% | -3.0% | -3.0% |
| EBTC | BUY | 2007-02-08 | 2007-02-12 | $15.60 | $94 | -6.4% | -3.0% | -3.0% |
| EBTC | BUY | 2007-02-07 | 2007-02-08 | $15.60 | $11K | -6.4% | -3.0% | -3.0% |
| EBTC | BUY | 2007-01-30 | 2007-02-01 | $15.25 | $4K | -6.4% | -3.0% | -3.0% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.