| Insider | Role | Shares | Value | Buys | Sells |
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| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
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| Insider | Role | Shares | Value | Buys | Sells |
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| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
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Chief Operating Officer
1 company
Marianna Mancini is Chief Operating Officer at VKTX. Marianna Mancini'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 $11.0M at current prices.
Historically, Marianna Mancini's trades have earned a middling insider score of 58/100 across 10 rated trades. Over a 12-month horizon, 50.0% of those trades were profitable, with an average 12-month return of -22.3%.
The VKTX filings lean toward selling, a net 690,300 shares.
Marianna Mancini has 20 Form 4 filings on record from January 2021 to July 2026, all as Chief Operating Officer at Viking Therapeutics (VKTX), 2021–2026.
The 81 reported transactions were 20 stock awards, 19 open-market sales, 19 option exercises and 17 tax withholdings, plus smaller numbers of other types.
Counted by filing, the open-market trades come to no purchases and 9 sales worth about $32.2M.
The largest open-market sale was 281,425 shares of VKTX at an average $78.66 on May 1, 2024, about $22.1M. Twelve months later VKTX was down 63%.
1 of the 8 sales since April 2023 was made under a Rule 10b5-1 trading plan; the other 7 were not.
| Date | Ticker | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Jul 29, 2026 | VKTX Viking Therapeutics, Inc. | Chief Operating Officer | Sell | 18,217 | $33.47 | $609,635.55 | -4.1% | -25.5% | - | |
| Jan 5, 2026 | VKTX Viking Therapeutics, Inc. | Chief Operating Officer | Sell | 57,661 | $32.98 | $1,901,405.31 | -12.4% | +5.6% | - | |
| Oct 28, 2025 | VKTX Viking Therapeutics, Inc. | Chief Operating Officer | Sell | 6,185 | $35.00 | $216,491.70 | -1.6% | -9.2% | -27.4% | |
| Jul 3, 2025 | VKTX Viking Therapeutics, Inc. | Chief Operating Officer | Sell | 4,266 | $27.77 | $118,472.79 | -1.1% | -2.9% | +32.8% | |
| Jan 6, 2025 | VKTX Viking Therapeutics, Inc. | Chief Operating Officer | Sell | 54,215 | $42.75 | $2,317,599.12 | -12.7% | -50.0% | -24.1% | |
| Jul 30, 2024 | VKTX Viking Therapeutics, Inc. | Chief Operating Officer | Sell | 18,026 | $57.13 | $1,029,911.96 | -4.7% | +31.8% | -40.4% | |
| May 1, 2024 | VKTX Viking Therapeutics, Inc. | Chief Operating Officer | Sale+OE10b5-1 | 281,425 | $78.66 | $22,136,473.80 | -44.7% | -26.0% | -62.6% | |
| Apr 17, 2023 | VKTX Viking Therapeutics, Inc. | Chief Operating Officer | Sale+OE | 12,500 | $20.00 | $250,000.00 | -4.2% | -21.1% | +246.2% | |
| Mar 29, 2023 | VKTX Viking Therapeutics, Inc. | Chief Operating Officer | Sale+OE | 237,805 | $15.17 | $3,608,317.00 | -47.6% | -6.9% | +414.8% |