PRTO Proteon Therapeutics Inc
Proteon Therapeutics Inc (PRTO) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
How much of that selling was preplanned? 0% planned / 100% discretionary
Largest single sale: $882.2K.
Where they traded
No open-market insider purchase on record.
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Shefferman Jesse | CEO and President | Sell | 215,687 | $4.09 | $882.2K | 721,832 −23% of holding | |
| Zummo Jacqueline | Chief R&D Officer | Sell | 1,134 | $5.40 | $6.1K | 94,827 −1.2% of holding | |
| Zummo Jacqueline | Chief R&D Officer | Sell | 22,598 | $5.26 | $118.9K | 95,961 −19.1% of holding |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.