Lewis Chew serves as Executive at NATIONAL SEMICONDUCTOR CORP, where they oversee executive responsibilities. Since joining the company, Lewis Chew has executed 165 insider transactions totaling $49.6M, demonstrating a bearish approach to their equity position. Their most recent transaction on Nov 20, 2025 involved exercising options for 971 shares valued at $0.
Lewis Chew currently holds 29,290 shares of NATIONAL SEMICONDUCTOR CORP (NSM), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Lewis Chew has been a net seller of NSM stock. They have purchased $209.4K and sold $49.4M worth of shares.
Lewis Chew's most recent insider trade was on Nov 20, 2025, when they sold 971 shares at $0.00 per share.
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| $N/A |
| Discretionary |
| Aug 20, 2024 | ANET | $0 | Option Exercise | 211 | $N/A | Discretionary |
| May 20, 2024 | ANET | $0 | Option Exercise | 372 | $N/A | Discretionary |
| May 2, 2024 | CDNS | $0 | Award | 868 | $N/A | Discretionary |
| Feb 20, 2024 | ANET | $0 | Option Exercise | 373 | $N/A | Discretionary |
| Nov 20, 2023 | ANET | $0 | Option Exercise | 372 | $N/A | Discretionary |
| Aug 21, 2023 | ANET | $0 | Option Exercise | 373 | $N/A | Discretionary |
| May 22, 2023 | ANET | $0 | Option Exercise | 510 | $N/A | Discretionary |
| May 4, 2023 | CDNS | $0 | Award | 1,073 | $N/A | Discretionary |
| Feb 21, 2023 | ANET | $0 | Option Exercise | 511 | $N/A | Discretionary |
| Nov 21, 2022 | ANET | $0 | Option Exercise | 510 | $N/A | Discretionary |
| Aug 22, 2022 | ANET | $0 | Option Exercise | 511 | $N/A | Discretionary |
| May 20, 2022 | ANET | $0 | Option Exercise | 616 | $N/A | Discretionary |
| May 5, 2022 | CDNS | $0 | Award | 1,473 | $N/A | Discretionary |
| Feb 22, 2022 | ANET | $0 | Option Exercise | 612 | $N/A | Discretionary |
| Nov 22, 2021 | ANET | $0 | Option Exercise | 616 | $N/A | Discretionary |
| Aug 20, 2021 | ANET | $0 | Option Exercise | 154 | $N/A | Discretionary |
| Aug 17, 2021 | DLB | $1.5M | Sale | 14,870 | $99.65 | Discretionary |
| Aug 17, 2021 | DLB | $994.5K | Option Exercise | 30,000 | $33.15 | Discretionary |
| Aug 17, 2021 | DLB | $284.7K | Sale | 2,800 | $101.68 | Discretionary |
| Aug 17, 2021 | DLB | $494.0K | Sale | 4,900 | $100.82 | Discretionary |
| Aug 17, 2021 | DLB | $737.1K | Sale | 7,430 | $99.20 | Discretionary |
| Aug 6, 2021 | DLB | $1.2M | Sale | 12,600 | $98.26 | Discretionary |
| Aug 6, 2021 | DLB | $497.3K | Option Exercise | 15,000 | $33.15 | Discretionary |
| Aug 6, 2021 | DLB | $237.3K | Sale | 2,400 | $98.87 | Discretionary |
| Aug 5, 2021 | DLB | $994.5K | Option Exercise | 30,000 | $33.15 | Discretionary |
| Aug 5, 2021 | DLB | $2.0M | Sale | 20,698 | $97.38 | Discretionary |
| Aug 5, 2021 | DLB | $910.3K | Sale | 9,302 | $97.86 | Discretionary |
| Aug 4, 2021 | DLB | $979.9K | Sale | 10,000 | $97.99 | Discretionary |