Arthur F. Ryan is Director at REGENERON PHARMACEUTICALS, INC. (REGN). They have made 16 open-market trades across 3 companies since 2010, most recently 2026-07-02.
CIK 0001187443
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.
3 open-market purchases totalling $1.2M since 2010, against 13 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| PRU | 265,366 | $30.7M |
| REGN | 17,303 | $13.7M |
| CFG | 60,993 | $3.9M |
| UBPS | 13,547 | — |
| Total | $48.3M |
Shares reported on the most recent Form 4, priced at the 2026-07-07 close. 1 holding could not be priced and is excluded from the total.
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 |
|---|---|---|---|---|---|---|---|---|
| REGN | SELL · 10b5-1 | 2026-07-02 | 2026-07-07 | $650.15 | $130K | +1.1% | +15.4% | +8.5% |
| REGN | SELL · 10b5-1 | 2026-05-01 | 2026-05-04 | $705.24 | $71K | +0.3% | -12.9% | +6.8% |
| REGN | SELL · 10b5-1 | 2026-04-01 | 2026-04-03 | $777.27 | $78K | -1.7% | -7.5% | -14.7% |
| REGN | SELL | 2026-03-02 | 2026-03-03 | $785.50 | $79K | -2.8% | -0.7% | -21.7% |
| REGN | SELL | 2026-02-09 | 2026-02-11 | $778.53 | $78K | -1.6% | -5.0% | -7.8% |
| REGN | SELL · 10b5-1 | 2024-10-01 | 2024-10-03 | $1048.78 | $105K | +0.1% | -18.4% | -29.6% |
| REGN | SELL · 10b5-1 | 2024-09-03 | 2024-09-05 | $1178.69 | $118K | -0.3% | -13.4% | -34.4% |
| REGN | SELL · 10b5-1 | 2024-08-01 | 2024-08-05 | $1100.03 | $1K | +10.4% | +10.8% | -22.1% |
| REGN | SELL · 10b5-1 | 2024-08-01 | 2024-08-05 | $1085.53 | $107K | +10.4% | +10.8% | -22.1% |
| REGN | SELL · 10b5-1 | 2024-07-01 | 2024-07-02 | $1059.24 | $106K | +3.8% | +4.9% | +0.9% |
| REGN | SELL · 10b5-1 | 2024-06-03 | 2024-06-05 | $994.50 | $99K | +4.0% | +2.9% | +16.3% |
| REGN | SELL · 10b5-1 | 2024-05-01 | 2024-05-03 | $899.61 | $90K | +2.1% | +3.3% | +14.1% |
| REGN | SELL · 10b5-1 | 2024-04-01 | 2024-04-03 | $962.53 | $96K | -6.6% | -0.5% | +8.6% |
| REGN | SELL · 10b5-1 | 2024-03-01 | 2024-03-05 | $982.05 | $98K | +0.5% | -2.3% | +3.2% |
| REGN | SELL · 10b5-1 | 2024-02-01 | 2024-02-05 | $954.22 | $95K | +1.6% | +3.4% | +2.0% |
| REGN | SELL · 10b5-1 | 2024-01-02 | 2024-01-04 | $899.90 | $90K | +2.7% | +3.5% | +5.1% |
| REGN | SELL · 10b5-1 | 2023-12-01 | 2023-12-04 | $817.30 | $82K | +7.1% | +12.2% | +18.8% |
| REGN | SELL · 10b5-1 | 2023-11-07 | 2023-11-08 | $827.90 | $83K | -1.7% | +3.0% | +15.0% |
| REGN | SELL · 10b5-1 | 2023-08-01 | 2023-08-03 | $736.59 | $74K | +3.9% | +6.1% | +2.0% |
| REGN | SELL · 10b5-1 | 2023-07-03 | 2023-07-06 | $716.88 | $72K | +3.7% | +10.6% | +16.3% |
| REGN | SELL · 10b5-1 | 2023-06-01 | 2023-06-02 | $735.42 | $74K | +3.8% | -3.3% | +11.3% |
| REGN | SELL · 10b5-1 | 2023-05-01 | 2023-05-03 | $805.33 | $81K | -3.2% | -4.6% | -4.7% |
| REGN | SELL · 10b5-1 | 2023-04-03 | 2023-04-05 | $819.31 | $82K | -1.9% | -7.4% | -12.8% |
| REGN | SELL · 10b5-1 | 2023-03-01 | 2023-03-03 | $762.50 | $76K | -2.3% | +6.2% | -6.0% |
| REGN | SELL · 10b5-1 | 2023-02-01 | 2023-02-03 | $756.13 | $76K | -4.1% | -0.6% | -3.9% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.