SEC Form 4 · Updated Daily
ISIS
Insider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| HOUGEN ELIZABETH L | Officer | 307,880 | 2026-03-16 | M |
| Monia Brett P | Director · Officer | 242,760 | 2026-08-31 | J |
| BERTHELSEN SPENCER R | Director | 161,233 | 2026-07-15 | M |
| LOSCALZO JOSEPH | Director | 113,619 | 2026-05-04 | M |
| Schneider Eugene | Officer | 103,114 | 2026-06-26 | M |
| Birchler Brian | Officer | 102,883 | 2026-08-31 | J |
| Geary Richard S | Officer | 77,957 | 2025-11-06 | M |
| BENNETT C FRANK | Officer | 60,128 | 2026-08-31 | J |
| MUTO FREDERICK T | Director | 59,597 | 2022-07-15 | M |
| O'NEIL PATRICK R. | Officer | 59,205 | 2026-08-31 | J |
| PARSHALL B LYNNE | Director | 51,878 | 2026-04-15 | S |
| HERMAN JOAN E | Director | 51,306 | 2026-07-15 | M |
| WENDER JOSEPH H | Director | 43,464 | 2025-12-01 | S |
| Cadoret-Manier Onaiza | Officer | 35,788 | 2024-02-02 | S |
| Jenne Kyle | Officer | 28,615 | 2026-04-15 | M |
| Hayden Michael R | Director | 24,000 | 2026-07-31 | P |
| KLEIN JOSEPH III | Director | 22,532 | 2026-07-01 | M |
| Kordasiewicz Holly B. | Officer | 22,096 | 2026-07-07 | S |
| Treble Michael J | Officer | 20,000 | 2008-08-11 | M |
| Castleman Breaux | Director | 19,183 | 2020-07-06 | M |
| Devers Shannon L. | Officer | 19,168 | 2026-10-15 | M |
| Reikes Peter N | Director | 14,222 | 2021-10-15 | M |
| Diaz Allene M. | Director | 13,922 | 2026-07-07 | M |
| Wedel Mark K | Officer | 11,803 | 2007-07-06 | M |
| Boyce Sarah | Reporting Owner | 11,127 | 2018-01-15 | M |
| Baroldi Joseph | Officer | 10,304 | 2026-06-26 | M |
| ECKER DAVID J | Officer | 10,000 | 2008-09-02 | M |
| YANG MICHAEL J. | Director | 7,940 | 2026-01-15 | M |
| LEVIN ARTHUR A | Officer | 7,674 | 2007-04-25 | M |
| BROWN RICHARD K | Officer | 5,118 | 2006-03-08 | M |
| REED JOHN C | Officer | 5,100 | 2012-09-04 | M |
| McDevitt Damien | Officer | 3,798 | 2019-07-15 | M |
| CROOKE STANLEY T | Director · Officer | 2,021 | 2021-01-26 | S |
| Swayze Eric | Officer | 443 | 2026-10-15 | M |
| JONAS JEFFREY M | Officer | 0 | 2007-02-01 | — |
| XANTHOPOULOS KLEANTHIS G | Officer | 0 | 2007-12-03 | — |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-10-16 | Swayze Eric | Open-market sale | 53 | $43.54 | 390 |
| 2026-10-16 | Devers Shannon L. | Open-market sale | 1,357 | $43.54 | 17,811 |
| 2026-10-15 | Swayze Eric | Option exercise (derivative) | 125 | $0.00 | 486 |
| 2026-10-15 | Swayze Eric | Option exercise | 125 | $0.00 | 443 |
| 2026-10-15 | Devers Shannon L. | Option exercise (derivative) | 2,820 | $0.00 | 49,884 |
| 2026-10-15 | Devers Shannon L. | Option exercise | 2,820 | $0.00 | 19,168 |
| 2026-08-31 | Birchler Brian | J | 58 | $51.31 | 102,883 |
| 2026-08-31 | Monia Brett P | J | 98 | $51.31 | 242,760 |
| 2026-08-31 | O'NEIL PATRICK R. | J | 63 | $51.31 | 59,205 |
| 2026-08-31 | BENNETT C FRANK | J | 110 | $51.31 | 60,128 |
| 2026-07-31 | Hayden Michael R | Open-market buy | 5,000 | $51.60 | 24,000 |
| 2026-07-30 | Hayden Michael R | Open-market buy | 15,000 | $53.38 | 19,000 |
| 2026-07-15 | BERTHELSEN SPENCER R | Option exercise (derivative) | 5,220 | $0.00 | 2,301 |
| 2026-07-15 | BERTHELSEN SPENCER R | Option exercise | 5,220 | $0.00 | 161,233 |
| 2026-07-15 | HERMAN JOAN E | Option exercise (derivative) | 5,220 | $0.00 | 2,301 |
| 2026-07-15 | HERMAN JOAN E | Option exercise | 5,220 | $0.00 | 51,306 |
| 2026-07-15 | HANTSON LUDWIG | Grant / award (derivative) | 3,399 | $0.00 | 3,399 |
| 2026-07-15 | Reikes Peter N | Grant / award (derivative) | 3,399 | $0.00 | 3,399 |
| 2026-07-07 | Kordasiewicz Holly B. | Open-market sale | 362 | $84.30 | 22,096 |
| 2026-07-07 | Diaz Allene M. | Option exercise (derivative) | 10,111 | $0.00 | 0 |
| 2026-07-07 | Diaz Allene M. | Open-market sale | 10,111 | $85.42 | 3,811 |
| 2026-07-07 | Diaz Allene M. | Option exercise | 10,111 | $47.11 | 13,922 |
| 2026-07-07 | BENNETT C FRANK | J (derivative) | 15,000 | $0.00 | 12,109 |
| 2026-07-07 | BENNETT C FRANK | Open-market sale | 15,000 | $85.46 | 0 |
| 2026-07-07 | BENNETT C FRANK | J | 15,000 | $0.00 | 15,000 |
| 2026-07-07 | BENNETT C FRANK | Open-market sale | 5,536 | $83.58 | 75,018 |
| 2026-07-01 | BERTHELSEN SPENCER R | Grant / award (derivative) | 2,301 | $0.00 | 7,521 |
| 2026-07-01 | BERTHELSEN SPENCER R | Grant / award (derivative) | 5,369 | $0.00 | 5,369 |
| 2026-07-01 | Diaz Allene M. | Grant / award (derivative) | 2,301 | $0.00 | 7,521 |
| 2026-07-01 | Diaz Allene M. | Grant / award (derivative) | 5,369 | $0.00 | 5,369 |
| 2026-07-01 | Hayden Michael R | Grant / award (derivative) | 2,301 | $0.00 | 12,198 |
| 2026-07-01 | Hayden Michael R | Grant / award (derivative) | 5,369 | $0.00 | 5,369 |
| 2026-07-01 | KLEIN JOSEPH III | Grant / award (derivative) | 2,301 | $0.00 | 16,277 |
| 2026-07-01 | KLEIN JOSEPH III | Grant / award (derivative) | 5,369 | $0.00 | 5,369 |
| 2026-07-01 | KLEIN JOSEPH III | Option exercise (derivative) | 11,518 | $0.00 | 0 |
| 2026-07-01 | KLEIN JOSEPH III | Open-market sale | 11,419 | $79.04 | 11,014 |
| 2026-07-01 | KLEIN JOSEPH III | Open-market sale | 99 | $79.45 | 22,433 |
| 2026-07-01 | KLEIN JOSEPH III | Option exercise | 11,518 | $39.94 | 22,532 |
| 2026-07-01 | HERMAN JOAN E | Grant / award (derivative) | 2,301 | $0.00 | 7,521 |
| 2026-07-01 | HERMAN JOAN E | Grant / award (derivative) | 5,369 | $0.00 | 5,369 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.