Updated Jul 16, 2026
SMITH J. JEFFERSON has filed 1 SEC Form 4 filing across 1 company in the last 90 days — selling. Lifetime open-market sales: $60K.

J. Jefferson Smith is the Chief Research Officer of Precision BioSciences Inc. (DTIL) as of the 2026-01-22 SEC filing, where he is listed in a leadership role overseeing the company’s research programs and genome-editing initiatives. In this filing, no equity transactions are reported for Smith, suggesting a focus on research leadership rather than trading; his responsibilities center on advancing the ARCUS genome-editing platform and related preclinical programs.
| Role | Chief Research Officer |
|---|---|
| Notability | 48/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-02-19 | DTIL | PRECISION BIOSCIENCES INC | S — Open-market sale [10b5-1] | 4.9K | $3.84 | $19K |
| 2026-02-19 | DTIL | PRECISION BIOSCIENCES INC | M — Option exercise [10b5-1] | 16.7K | $0.00 | |
| 2026-01-22 | DTIL | PRECISION BIOSCIENCES INC | S — Open-market sale [10b5-1] | 10.2K | $4.03 | $41K |
| 2026-01-22 | DTIL | PRECISION BIOSCIENCES INC | M — Option exercise [10b5-1] | 16.2K | — | |
| 2026-01-22 | DTIL | PRECISION BIOSCIENCES INC | M — Option exercise [10b5-1] | 10.4K | — | |
| 2026-01-22 | DTIL | PRECISION BIOSCIENCES INC | M — Option exercise [10b5-1] | 2.5K | — |
J. Jefferson Smith is the Chief Research Officer of Precision BioSciences Inc. (DTIL) as of the 2026-01-22 SEC filing, where he is listed in a leadership role overseeing the company’s research programs and genome-editing initiatives. In this filing, no equity transactions are reported for Smith, suggesting a focus on research leadership rather than trading; his responsibilities…
1 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases () and 2 open-market sales ($60K) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Open the live SMITH J. JEFFERSON profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.