John Deren is CAO & VP at TELEFLEX INC (TFX). They have made 9 open-market trades across 1 company since 2017, most recently 2026-03-04.
CIK 0001706189
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 9 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| TFX | 9,122 | $1.2M |
Shares reported on the most recent Form 4, priced at the 2026-03-05 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| TFX | SELL | 2020-05-05 | 2020-05-07 | $330.10 | $722K | +0.5% | +9.0% | +8.8% |
| TFX | SELL | 2020-02-28 | 2020-03-03 | $346.17 | $1.5M | -7.9% | -14.6% | +5.7% |
| TFX | SELL | 2019-08-14 | 2019-08-14 | $365.07 | $1.5M | -1.2% | -9.1% | -8.9% |
| TFX | SELL | 2019-03-11 | 2019-03-12 | $290.43 | $36K | +1.7% | +2.9% | +4.8% |
| TFX | SELL | 2019-03-06 | 2019-03-08 | $287.18 | $2.9M | +4.6% | +5.2% | +4.6% |
| TFX | SELL | 2018-06-12 | 2018-06-13 | $284.57 | $767K | -3.2% | -3.3% | -10.5% |
| TFX | SELL | 2018-02-27 | 2018-03-01 | $255.67 | $695K | +10.6% | +3.5% | +10.5% |
| TFX | SELL | 2017-05-09 | 2017-05-11 | $194.07 | $416K | +3.5% | +3.8% | +9.1% |
| TFX | SELL | 2017-05-09 | 2017-05-11 | $194.07 | $852K | +3.5% | +3.8% | +9.1% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.