Marianna Mancini, Chief Operating Officer of Viking Therapeutics ($VKTX), sold shares on the open market six times over the past year for a total of $2.24 million. Her most recent sale occurred on January 5, 2026. These transactions rank 3,278th among 11,678 insiders in our database, well below the average sale amount of $8.59 million across 6.4 transactions per seller. Mancini made no open market purchases in the last 365 days.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan. 5, 2026 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | S | Common Stock, par value $0.00001 per share | 31961 | $32.29 | 434,890.0000 | 113,036,344 | 6.85% | 0.03% |
| Jan. 2, 2026 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | A | Common Stock, par value $0.00001 per share | 32049 | $0.00 | 466,851.0000 | 113,036,344 | 7.37% | 0.03% |
| Jan. 2, 2026 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | A | Common Stock, par value $0.00001 per share | 41000 | $0.00 | 434,802.0000 | 113,036,344 | 10.41% | 0.04% |
| Jan. 2, 2026 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | A | Stock Option (Right to Buy) | 91000 | $0.00 | 91,000.0000 | 113,036,344 | 9999.99% | 0.08% |
| Jan. 5, 2026 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | S | Common Stock, par value $0.00001 per share | 1600 | $35.07 | 409,190.0000 | 113,036,344 | 0.39% | 0.00% |
| Jan. 5, 2026 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | S | Common Stock, par value $0.00001 per share | 10500 | $34.22 | 410,790.0000 | 113,036,344 | 2.49% | 0.01% |
| Jan. 5, 2026 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | S | Common Stock, par value $0.00001 per share | 13600 | $33.37 | 421,290.0000 | 113,036,344 | 3.13% | 0.01% |
| Oct. 28, 2025 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | S | Common Stock, par value $0.00001 per share | 6185 | $35.00 | 382,467.0000 | 113,036,344 | 1.59% | 0.01% |
| Oct. 27, 2025 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | A | Common Stock, par value $0.00001 per share | 11117 | $0.00 | 388,652.0000 | 113,036,344 | 2.94% | 0.01% |
| July 2, 2025 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | A | Common Stock, par value $0.00001 per share | 7667 | $0.00 | 381,801.0000 | 112,247,809 | 2.05% | 0.01% |
| July 3, 2025 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | S | Common Stock, par value $0.00001 per share | 4266 | $27.77 | 377,535.0000 | 112,247,809 | 1.12% | 0.00% |
| Jan. 6, 2025 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | S | Common Stock, par value $0.00001 per share | 5100 | $43.32 | 374,134.0000 | 0 | 1.34% | 0.00% |
| Jan. 3, 2025 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | A | Common Stock, par value $0.00001 per share | 44533 | $0.00 | 406,682.0000 | 0 | 12.30% | 0.00% |
| Jan. 3, 2025 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | A | Common Stock, par value $0.00001 per share | 21667 | $0.00 | 428,349.0000 | 0 | 5.33% | 0.00% |
| Jan. 6, 2025 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | S | Common Stock, par value $0.00001 per share | 49115 | $42.69 | 379,234.0000 | 0 | 11.47% | 0.00% |
| Jan. 3, 2025 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | A | Stock Option (Right to Buy) | 37200 | $0.00 | 37,200.0000 | 0 | 9999.99% | 0.00% |
| July 29, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | A | Common Stock, par value $0.00001 per share | 10000 | $0.00 | 358,508.0000 | 0 | 2.87% | 0.00% |
| July 29, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | A | Common Stock, par value $0.00001 per share | 21667 | $0.00 | 380,175.0000 | 0 | 6.04% | 0.00% |
| July 30, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | S | Common Stock, par value $0.00001 per share | 14704 | $56.98 | 365,471.0000 | 0 | 3.87% | 0.00% |
| July 30, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | S | Common Stock, par value $0.00001 per share | 3322 | $57.82 | 362,149.0000 | 0 | 0.91% | 0.00% |
| May 1, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | S | Common Stock, par value $0.00001 per share | 6248 | $80.08 | 348,508.0000 | 0 | 1.76% | 0.00% |
| May 1, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | M | Stock Option (Right to Buy) | 17999 | $0.00 | 1.0000 | 0 | 99.99% | 0.00% |
| May 1, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | M | Stock Option (Right to Buy) | 87000 | $0.00 | 87,000.0000 | 0 | 50.00% | 0.00% |
| May 1, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | M | Stock Option (Right to Buy) | 90000 | $0.00 | 0.0000 | 0 | 100.00% | 0.00% |
| May 1, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | M | Stock Option (Right to Buy) | 35426 | $0.00 | 18,574.0000 | 0 | 65.60% | 0.00% |
| May 1, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | M | Stock Option (Right to Buy) | 51000 | $0.00 | 153,000.0000 | 0 | 25.00% | 0.00% |
| May 1, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | S | Common Stock, par value $0.00001 per share | 23746 | $76.40 | 606,187.0000 | 0 | 3.77% | 0.00% |
| May 1, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | S | Common Stock, par value $0.00001 per share | 26142 | $77.49 | 580,045.0000 | 0 | 4.31% | 0.00% |
| May 1, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | S | Common Stock, par value $0.00001 per share | 105343 | $78.65 | 474,702.0000 | 0 | 18.16% | 0.00% |
| May 1, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | S | Common Stock, par value $0.00001 per share | 119946 | $79.29 | 354,756.0000 | 0 | 25.27% | 0.00% |
| May 1, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | M | Common Stock, par value $0.00001 per share | 51000 | $8.52 | 629,933.0000 | 0 | 8.81% | 0.00% |
| May 1, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | M | Common Stock, par value $0.00001 per share | 35426 | $7.77 | 578,933.0000 | 0 | 6.52% | 0.00% |
| May 1, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | M | Common Stock, par value $0.00001 per share | 90000 | $5.80 | 543,507.0000 | 0 | 19.85% | 0.00% |
| May 1, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | M | Common Stock, par value $0.00001 per share | 87000 | $4.88 | 453,507.0000 | 0 | 23.74% | 0.00% |
| May 1, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | M | Common Stock, par value $0.00001 per share | 17999 | $4.68 | 366,507.0000 | 0 | 5.16% | 0.00% |
| March 27, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | F | Common Stock, par value $0.00001 per share | 16610 | $83.34 | 363,565.0000 | 0 | 4.37% | 0.00% |
| March 27, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | A | Common Stock, par value $0.00001 per share | 31667 | $0.00 | 380,175.0000 | 0 | 9.09% | 0.00% |
| March 1, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | F | Common Stock, par value $0.00001 per share | 16958 | $85.22 | 348,508.0000 | 0 | 4.64% | 0.00% |
| March 1, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | A | Common Stock, par value $0.00001 per share | 31667 | $0.00 | 365,466.0000 | 0 | 9.49% | 0.00% |
| Jan. 3, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | F | Common Stock, par value $0.00001 per share | 32677 | $17.40 | 347,998.0000 | 0 | 8.58% | 0.00% |
| Jan. 3, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | A | Stock Option (Right to Buy) | 155000 | $0.00 | 155,000.0000 | 0 | 9999.99% | 0.00% |
| Jan. 4, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | F | Common Stock, par value $0.00001 per share | 14199 | $18.58 | 333,799.0000 | 0 | 4.08% | 0.00% |
| Jan. 3, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | A | Common Stock, par value $0.00001 per share | 28334 | $0.00 | 327,208.0000 | 0 | 9.48% | 0.00% |
| Jan. 3, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | F | Common Stock, par value $0.00001 per share | 16533 | $17.40 | 310,675.0000 | 0 | 5.05% | 0.00% |
| Jan. 3, 2024 | Viking Therapeutics, Inc. | $VKTX | Mancini Marianna | Chief Operating Officer | A | Common Stock, par value $0.00001 per share | 70000 | $0.00 | 380,675.0000 | 0 | 22.53% | 0.00% |