Fusen Ernie Chen serves as Executive at NOVELLUS SYSTEMS INC, where they oversee executive responsibilities. Since joining the company, Fusen Ernie Chen has executed 223 insider transactions totaling $30.1M, demonstrating a bearish approach to their equity position. Their most recent transaction on Nov 20, 2025 involved exercising options for 1,920 shares valued at $0.
Fusen Ernie Chen currently holds 1,161,725 shares of NOVELLUS SYSTEMS INC (NVLS), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Fusen Ernie Chen has been a net seller of NVLS stock. They have purchased $504.9K and sold $29.6M worth of shares.
Fusen Ernie Chen's most recent insider trade was on Nov 20, 2025, when they sold 1,920 shares at $0.00 per share.
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| $N/A |
| Discretionary |
| May 17, 2024 | KLIC | $0 | Gift | 25,000 | $N/A | Discretionary |
| Nov 16, 2023 | KLIC | $0 | Option Exercise | 54,962 | $N/A | Discretionary |
| Oct 12, 2023 | KLIC | $1.4M | Sale | 30,000 | $47.04 | Planned |
| Oct 11, 2023 | KLIC | $0 | Award | 43,423 | $N/A | Discretionary |
| Oct 11, 2023 | KLIC | $1.4M | Sale | 30,000 | $47.11 | Planned |
| Oct 7, 2023 | KLIC | $0 | Option Exercise | 136,857 | $N/A | Discretionary |
| Dec 8, 2022 | KLIC | $1.5M | Sale | 30,997 | $47.48 | Discretionary |
| Dec 7, 2022 | KLIC | $1.2M | Sale | 24,559 | $47.48 | Discretionary |
| Nov 17, 2022 | KLIC | $0 | Option Exercise | 55,556 | $N/A | Discretionary |
| Oct 14, 2022 | KLIC | $0 | Award | 32,000 | $N/A | Discretionary |
| Oct 10, 2022 | KLIC | $0 | Option Exercise | 114,999 | $N/A | Discretionary |
| Dec 9, 2021 | KLIC | $729.5K | Sale | 10,000 | $72.95 | Discretionary |
| Dec 8, 2021 | KLIC | $834.2K | Sale | 12,750 | $65.43 | Discretionary |
| Dec 8, 2021 | KLIC | $859.8K | Sale | 12,700 | $67.70 | Discretionary |
| Dec 8, 2021 | KLIC | $811.9K | Sale | 12,250 | $66.28 | Discretionary |
| Dec 8, 2021 | KLIC | $838.4K | Sale | 12,300 | $68.16 | Discretionary |
| Nov 18, 2021 | KLIC | $0 | Option Exercise | 60,000 | $N/A | Discretionary |
| Oct 15, 2021 | KLIC | $0 | Award | 20,325 | $N/A | Discretionary |
| Oct 12, 2021 | KLIC | $0 | Option Exercise | 131,400 | $N/A | Discretionary |
| Jun 10, 2021 | KLIC | $562.4K | Sale | 10,000 | $56.24 | Discretionary |
| Jun 9, 2021 | KLIC | $1.3M | Sale | 23,571 | $56.82 | Discretionary |
| Jun 9, 2021 | KLIC | $924.0K | Sale | 16,429 | $56.24 | Discretionary |
| Nov 23, 2020 | KLIC | $0 | Option Exercise | 4,060 | $N/A | Discretionary |
| Nov 7, 2020 | KLIC | $0 | Option Exercise | 68,073 | $N/A | Discretionary |
| Oct 7, 2020 | KLIC | $0 | Award | 36,641 | $N/A | Discretionary |
| Oct 31, 2019 | KLIC | $0 | Option Exercise | 223,640 | $N/A | Discretionary |
| Oct 10, 2019 | KLIC | $0 | Award | 37,037 | $N/A | Discretionary |
| Oct 12, 2018 | KLIC | $0 | Award | 40,000 | $N/A | Discretionary |