Christopher A. Kuebler is Director at WATERS CORP /DE/ (WAT). They have made 17 open-market trades across 2 companies since 2012, most recently 2026-08-06.
CIK 0001229877
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 17 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| WAT | 17,808 | $7.8M |
| NKTR | 45,250 | $1.6M |
| Total | $9.4M |
Shares reported on the most recent Form 4, priced at the 2026-08-07 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| WAT | SELL | 2026-08-06 | 2026-08-07 | $397.94 | $1.4M | +2.9% | -0.2% | — |
| WAT | SELL | 2024-05-15 | 2024-05-16 | $361.64 | $1.4M | -9.1% | -18.4% | -6.7% |
| WAT | SELL | 2023-08-04 | 2023-08-07 | $291.48 | $1.2M | -5.8% | -5.9% | -13.0% |
| WAT | SELL | 2022-05-19 | 2022-05-23 | $328.78 | $1.3M | +5.7% | -2.7% | -1.0% |
| WAT | SELL | 2021-08-18 | 2021-08-19 | $405.62 | $1.2M | +2.3% | -2.2% | -15.2% |
| WAT | SELL | 2018-11-16 | 2018-11-19 | $199.67 | $1.6M | +1.1% | -7.2% | +19.3% |
| WAT | SELL | 2018-03-09 | 2018-03-12 | $209.10 | $2.2M | -4.4% | -6.2% | -3.4% |
| WAT | SELL | 2018-03-08 | 2018-03-09 | $209.00 | $87K | -0.8% | -6.8% | -4.7% |
| NKTR | SELL | 2018-03-06 | 2018-03-08 | $97.60 | $3.9M | +0.0% | -2.5% | -44.0% |
| NKTR | SELL | 2018-01-02 | 2018-01-04 | $58.66 | $1.8M | +19.0% | +41.3% | +74.6% |
| NKTR | SELL | 2017-09-22 | 2017-09-25 | $21.86 | $87K | +8.0% | +5.7% | +162.4% |
| WAT | SELL | 2017-08-08 | 2017-08-09 | $179.67 | $629K | +2.3% | +5.9% | +11.5% |
| NKTR | SELL | 2017-04-05 | 2017-04-07 | $21.88 | $328K | -5.0% | -10.9% | -3.1% |
| NKTR | SELL | 2016-09-16 | 2016-09-19 | $19.13 | $143K | -11.9% | -30.6% | -32.6% |
| WAT | SELL | 2016-05-04 | 2016-05-05 | $129.88 | $520K | +2.8% | +6.0% | +20.1% |
| NKTR | SELL | 2015-12-04 | 2015-12-07 | $15.82 | $237K | -19.7% | -4.8% | -26.6% |
| WAT | SELL | 2015-11-23 | 2015-11-24 | $133.17 | $533K | -6.5% | -1.7% | -7.4% |
| NKTR | SELL · 10b5-1 | 2015-01-13 | 2015-01-15 | $16.00 | $240K | -19.7% | -1.3% | -1.3% |
| NKTR | SELL · 10b5-1 | 2013-08-05 | 2013-08-08 | $12.41 | $155K | -19.7% | -1.3% | -1.3% |
| NKTR | SELL · 10b5-1 | 2012-09-27 | 2012-10-01 | $10.66 | $133K | -19.7% | -1.3% | -1.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.