Liawatidewi Yakob has filed 42 insider transactions across 1 company since March 2023.
Most recent transaction: a tax payment of 1033 shares of Amphastar Pharmaceuticals, Inc. ($AMPH) on March 15, 2026.
Activity breakdown: 0 open-market purchases and 5 sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 15, 2026 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | F | Common Stock | 1033 | $18.18 | 124,351.0000 | 48,215,000 | 0.82% | 0.00% |
| March 9, 2026 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | A | Employee Stock Option (right to buy) | 73126 | $0.00 | 73,126.0000 | 48,215,000 | 9999.99% | 0.15% |
| March 10, 2026 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | F | Common Stock | 1870 | $18.91 | 125,384.0000 | 48,215,000 | 1.47% | 0.00% |
| March 9, 2026 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | A | Common Stock | 35450 | $0.00 | 127,254.0000 | 48,215,000 | 38.61% | 0.07% |
| March 6, 2026 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | F | Common Stock | 1144 | $19.34 | 91,804.0000 | 48,215,000 | 1.23% | 0.00% |
| March 4, 2026 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | F | Common Stock | 965 | $19.96 | 92,948.0000 | 48,215,000 | 1.03% | 0.00% |
| March 17, 2025 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | F | Common Stock | 1731 | $27.69 | 93,368.0000 | 52,058,000 | 1.82% | 0.00% |
| March 15, 2025 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | F | Common Stock | 1031 | $26.66 | 95,099.0000 | 52,058,000 | 1.07% | 0.00% |
| March 10, 2025 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | A | Common Stock | 20837 | $0.00 | 96,130.0000 | 52,058,000 | 27.67% | 0.04% |
| March 10, 2025 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | A | Employee Stock Option (right to buy) | 44253 | $0.00 | 44,253.0000 | 52,058,000 | 9999.99% | 0.09% |
| March 6, 2025 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | F | Common Stock | 1141 | $28.32 | 75,293.0000 | 52,058,000 | 1.49% | 0.00% |
| March 4, 2025 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | F | Common Stock | 963 | $27.62 | 76,434.0000 | 52,058,000 | 1.24% | 0.00% |
| Nov. 6, 2024 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | S | Common Stock | 5214 | $52.05 | 77,397.0000 | 51,862,000 | 6.31% | 0.01% |
| Nov. 6, 2024 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | M | Employee Stock Option (right to buy) | 5214 | $0.00 | 10,962.0000 | 51,862,000 | 32.23% | 0.01% |
| Nov. 6, 2024 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | M | Common Stock | 5214 | $13.03 | 82,611.0000 | 51,862,000 | 6.74% | 0.01% |
| June 4, 2024 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | F | Common Stock | 272 | $42.22 | 77,397.0000 | 53,013,000 | 0.35% | 0.00% |
| March 15, 2024 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | F | Common Stock | 1027 | $43.05 | 80,634.0000 | 53,001,000 | 1.26% | 0.00% |
| March 16, 2024 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | F | Common Stock | 1671 | $43.05 | 78,963.0000 | 53,001,000 | 2.07% | 0.00% |
| March 17, 2024 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | F | Common Stock | 1726 | $43.05 | 77,237.0000 | 53,001,000 | 2.19% | 0.00% |
| March 6, 2024 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | F | Common Stock | 1221 | $46.31 | 81,661.0000 | 53,001,000 | 1.47% | 0.00% |
| March 4, 2024 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | A | Employee Stock Option (right to buy) | 22655 | $0.00 | 22,655.0000 | 53,001,000 | 9999.99% | 0.04% |
| March 4, 2024 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP CORP ADMIN CENTER | A | Common Stock | 10754 | $0.00 | 82,882.0000 | 53,001,000 | 14.91% | 0.02% |
| Aug. 28, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | M | Employee Stock Option (right to buy) | 3319 | $0.00 | 0.0000 | 53,102,000 | 100.00% | 0.01% |
| Aug. 28, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | M | Common Stock | 3319 | $16.96 | 75,447.0000 | 53,102,000 | 4.60% | 0.01% |
| Aug. 28, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | M | Common Stock | 5497 | $20.23 | 80,944.0000 | 53,102,000 | 7.29% | 0.01% |
| Aug. 28, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | M | Common Stock | 20000 | $13.03 | 100,944.0000 | 53,102,000 | 24.71% | 0.04% |
| Aug. 28, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | S | Common Stock | 28816 | $53.13 | 72,128.0000 | 53,102,000 | 28.55% | 0.05% |
| Aug. 28, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | M | Employee Stock Option (right to buy) | 5497 | $0.00 | 0.0000 | 53,102,000 | 100.00% | 0.01% |
| Aug. 28, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | M | Employee Stock Option (right to buy) | 20000 | $0.00 | 16,176.0000 | 53,102,000 | 55.29% | 0.04% |
| June 4, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | F | Common Stock | 378 | $46.70 | 72,128.0000 | 51,970,000 | 0.52% | 0.00% |
| April 13, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | S | Common Stock | 5000 | $41.00 | 78,168.0000 | 51,970,000 | 6.01% | 0.01% |
| April 13, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | S | Common Stock | 6494 | $42.00 | 71,674.0000 | 51,970,000 | 8.31% | 0.01% |
| April 13, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | M | Employee Stock Option (right to buy) | 11494 | $0.00 | 5,497.0000 | 51,970,000 | 67.65% | 0.02% |
| April 13, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | M | Common Stock | 11494 | $20.23 | 83,168.0000 | 51,970,000 | 16.04% | 0.02% |
| April 10, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | M | Common Stock | 5000 | $20.23 | 76,674.0000 | 51,970,000 | 6.98% | 0.01% |
| April 10, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | S | Common Stock | 5000 | $40.00 | 71,674.0000 | 51,970,000 | 6.52% | 0.01% |
| April 10, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | M | Employee Stock Option (right to buy) | 5000 | $0.00 | 16,991.0000 | 51,970,000 | 22.74% | 0.01% |
| March 17, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | F | Common Stock | 1673 | $36.29 | 71,674.0000 | 52,427,000 | 2.28% | 0.00% |
| March 16, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | F | Common Stock | 1620 | $37.60 | 73,347.0000 | 52,427,000 | 2.16% | 0.00% |
| March 15, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | F | Common Stock | 1851 | $36.84 | 74,967.0000 | 52,427,000 | 2.41% | 0.00% |
| March 6, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | A | Employee Stock Option (right to buy) | 26873 | $0.00 | 26,873.0000 | 52,427,000 | 9999.99% | 0.05% |
| March 6, 2023 | Amphastar Pharmaceuticals, Inc. | $AMPH | Liawatidewi Yakob | EVP Corp Admin Center | A | Common Stock | 12752 | $0.00 | 76,818.0000 | 52,427,000 | 19.90% | 0.02% |