| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Chief Scientific Officer | Sr. VP, R& D & CSO | Sr. VP & CSO
1 company
Yat Sun Or is Chief Scientific Officer at ENTA. Yat Sun Or's net worth is not public. Form 4 filings only show shares in the companies where this person is an insider; those holdings are worth an estimated $3.9M at current prices.
Our model assigns Yat Sun Or a middling insider score of 59/100, based on 4 past trades. Over a 12-month horizon, 66.7% of those trades were profitable, with an average 12-month return of -1.2%.
The ENTA filings lean toward selling, a net 123,141 shares.
Yat Sun Or has 47 Form 4 filings on record from January 2015 to February 2026, all as Chief Scientific Officer at Enanta Pharmaceuticals (ENTA), 2015–2026.
The 88 reported transactions were 21 open-market sales, 18 stock awards, 17 option exercises and 16 tax withholdings, plus smaller numbers of other types.
Counted by filing, the open-market trades come to no purchases and 13 sales worth about $6.9M.
The largest open-market sale was 33,981 shares of ENTA at an average $89.52 on February 12, 2019, about $3.0M.
1 of the 3 sales since April 2023 was made under a Rule 10b5-1 trading plan; the other 2 were not.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Dec 5, 2025 | ENTA Enanta Pharmaceuticals Inc | Chief Scientific Officer | Sell | 2,390 | $14.23 | $34,009.70 | -0.6% | -5.8% | - | |
| Dec 6, 2024 | ENTA Enanta Pharmaceuticals Inc | Chief Scientific Officer | Sell10b5-1 | 2,591 | $8.06 | $20,883.46 | -0.7% | -10.3% | +82.5% | |
| Dec 5, 2023 | ENTA Enanta Pharmaceuticals Inc | Sr. VP, R& D & CSO | Sell | 2,412 | $9.63 | $23,227.56 | -0.6% | +65.3% | -9.9% | |
| Mar 15, 2023 | ENTA Enanta Pharmaceuticals Inc | Sr. VP & CSO | Sale+OE | 13,925 | $44.45 | $618,960.24 | -3.6% | -44.3% | -68.9% | |
| Mar 1, 2019 | ENTA Enanta Pharmaceuticals Inc | Sr. VP & CSO | Sell | 10,000 | $103.53 | $1,035,320.21 | -3.2% | - | - | |
| Feb 12, 2019 | ENTA Enanta Pharmaceuticals Inc | Sr. VP & CSO | Sale+OE | 33,981 | $89.52 | $3,041,910.29 | -10.1% | - | - | |
| Jan 4, 2017 | ENTA Enanta Pharmaceuticals Inc | Chief Scientific Officer | Sell | 13,921 | $35.09 | $488,504.60 | -4.4% | - | - | |
| Nov 29, 2016 | ENTA Enanta Pharmaceuticals Inc | Chief Scientific Officer | Sell | 13,921 | $31.44 | $437,609.42 | -4.2% | - | - | |
| Aug 10, 2015 | ENTA Enanta Pharmaceuticals Inc | Chief Scientific Officer | Sell | 3,750 | $42.90 | $160,883.51 | -1.8% | - | - | |
| Jul 13, 2015 | ENTA Enanta Pharmaceuticals Inc | Chief Scientific Officer | Sell | 3,750 | $46.29 | $173,594.50 | -1.7% | - | - |