Luc Seraphin insider trades: Rambus (RMBS) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Luc reports to the SEC
Open-market buys and sales
53 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Apr 2, 2026 | RMBS | ↓ Sell | 5,426 | $86.65 | $470K | Direct | Apr 3, 2026 (1d) |
| Mar 2, 2026 | RMBS | ↓ Sell | 39,914 | $98.63 | $3.9M | Direct | Mar 3, 2026 (1d) |
| Apr 23, 2025 | RMBS | ↓ Sell | 7,603 | $46.64 | $355K | Direct | Apr 24, 2025 (1d) |
| Apr 15, 2025 | RMBS | ↓ Sell | 10,000 | $47.79 | $478K | Direct | Apr 16, 2025 (1d) |
| Apr 8, 2025 | RMBS | ↓ Sell | 10,000 | $46.81 | $468K | Direct | Apr 8, 2025 (0d) |
| Apr 1, 2025 | RMBS | ↓ Sell | 10,000 | $50.88 | $509K | Direct | Apr 3, 2025 (2d) |
| Mar 25, 2025 | RMBS | ↓ Sell | 10,000 | $58.64 | $586K | Direct | Mar 26, 2025 (1d) |
| Mar 18, 2025 | RMBS | ↓ Sell | 10,000 | $53.79 | $538K | Direct | Mar 19, 2025 (1d) |
| Apr 16, 2024 | RMBS | ↓ Sell | 5,530 | $58.66 | $324K | Direct | Apr 16, 2024 (0d) |
| Apr 9, 2024 | RMBS | ↓ Sell | 15,000 | $61.35 | $920K | Direct | Apr 10, 2024 (1d) |
| Apr 2, 2024 | RMBS | ↓ Sell | 15,000 | $59.93 | $899K | Direct | Apr 2, 2024 (0d) |
| Mar 26, 2024 | RMBS | ↓ Sell | 15,000 | $62.69 | $940K | Direct | Mar 27, 2024 (1d) |
| Mar 19, 2024 | RMBS | ↓ Sell | 15,000 | $58.35 | $875K | Direct | Mar 20, 2024 (1d) |
| Mar 12, 2024 | RMBS | ↓ Sell | 15,000 | $62.69 | $940K | Direct | Mar 13, 2024 (1d) |
| Mar 5, 2024 | RMBS | ↓ Sell | 15,000 | $62.17 | $933K | Direct | Mar 6, 2024 (1d) |
| May 15, 2023 | RMBS | ↓ Sell | 4,556 | $49.39 | $225K | Direct | May 16, 2023 (1d) |
| May 8, 2023 | RMBS | ↓ Sell | 12,500 | $47.98 | $600K | Direct | May 9, 2023 (1d) |
| May 1, 2023 | RMBS | ↓ Sell | 12,500 | $44.83 | $560K | Direct | May 2, 2023 (1d) |
| Apr 24, 2023 | RMBS | ↓ Sell | 12,500 | $49.41 | $618K | Direct | Apr 25, 2023 (1d) |
| Apr 17, 2023 | RMBS | ↓ Sell | 12,500 | $49.58 | $620K | Direct | Apr 18, 2023 (1d) |
| Apr 10, 2023 | RMBS | ↓ Sell | 12,500 | $48.68 | $609K | Direct | Apr 11, 2023 (1d) |
| Apr 3, 2023 | RMBS | ↓ Sell | 12,500 | $51.28 | $641K | Direct | Apr 4, 2023 (1d) |
| Mar 27, 2023 | RMBS | ↓ Sell | 12,500 | $44.99 | $562K | Direct | Mar 28, 2023 (1d) |
| Mar 20, 2023 | RMBS | ↓ Sell | 12,500 | $44.20 | $552K | Direct | Mar 21, 2023 (1d) |
| Mar 13, 2023 | RMBS | ↓ Sell | 12,500 | $41.06 | $513K | Direct | Mar 14, 2023 (1d) |
| Mar 6, 2023 | RMBS | ↓ Sell | 12,500 | $44.83 | $560K | Direct | Mar 7, 2023 (1d) |
| Apr 25, 2022 | RMBS | ↓ Sell | 8,313 | $25.30 | $210K | Direct | Apr 27, 2022 (2d) |
| Apr 18, 2022 | RMBS | ↓ Sell | 12,500 | $25.77 | $322K | Direct | Apr 19, 2022 (1d) |
| Apr 11, 2022 | RMBS | ↓ Sell10b5-1 | 12,500 | $25.86 | $323K | Direct | Apr 12, 2022 (1d) |
| Apr 4, 2022 | RMBS | ↓ Sell10b5-1 | 12,500 | $31.43 | $393K | Direct | Apr 5, 2022 (1d) |
| Mar 28, 2022 | RMBS | ↓ Sell10b5-1 | 12,500 | $32.30 | $404K | Direct | Mar 30, 2022 (2d) |
| Mar 21, 2022 | RMBS | ↓ Sell10b5-1 | 12,500 | $31.09 | $389K | Direct | Mar 22, 2022 (1d) |
| Mar 14, 2022 | RMBS | ↓ Sell10b5-1 | 12,500 | $26.68 | $333K | Direct | Mar 15, 2022 (1d) |
| Mar 7, 2022 | RMBS | ↓ Sell10b5-1 | 12,500 | $28.11 | $351K | Direct | Mar 9, 2022 (2d) |
| Feb 4, 2021 | RMBS | ↓ Sell10b5-1 | 12,605 | $19.09 | $241K | Direct | Feb 4, 2021 (0d) |
| Feb 2, 2021 | RMBS | ↓ Sell | 36,366 | $19.34 | $703K | Direct | Feb 3, 2021 (1d) |
| Jan 4, 2021 | RMBS | ↓ Sell | 1,779 | $17.54 | $31K | Direct | Jan 5, 2021 (1d) |
| Dec 3, 2020 | RMBS | ↓ Sell | 5,930 | $16.32 | $97K | Direct | Dec 4, 2020 (1d) |
| Nov 5, 2020 | RMBS | ↓ Sell | 2,745 | $15.39 | $42K | Direct | Nov 9, 2020 (4d) |
| Sep 16, 2020 | RMBS | ↓ Sell | 2,425 | $14.00 | $34K | Direct | Sep 17, 2020 (1d) |
| Sep 3, 2020 | RMBS | ↓ Sell | 759 | $14.15 | $11K | Direct | Sep 8, 2020 (5d) |
| Jun 3, 2020 | RMBS | ↓ Sell | 5,930 | $15.65 | $93K | Direct | Jun 4, 2020 (1d) |
| May 6, 2020 | RMBS | ↓ Sell | 7,077 | $14.55 | $103K | Direct | May 7, 2020 (1d) |
| Mar 23, 2020 | RMBS | ↓ Sell | 15,733 | $9.77 | $154K | Direct | Mar 24, 2020 (1d) |
| Feb 4, 2020 | RMBS | ↓ Sell | 32,722 | $16.41 | $537K | Direct | Feb 5, 2020 (1d) |
| Jan 29, 2020 | RMBS | ↓ Sell | 21,959 | $15.50 | $340K | Direct | Jan 30, 2020 (1d) |
| Dec 26, 2019 | RMBS | ↓ Sell | 6,543 | $14.03 | $92K | Direct | Dec 30, 2019 (4d) |
| Dec 3, 2019 | RMBS | ↓ Sell | 3,746 | $12.69 | $48K | Direct | Dec 4, 2019 (1d) |
| Nov 4, 2019 | RMBS | ↓ Sell | 18,226 | $13.94 | $254K | Direct | Nov 4, 2019 (0d) |
| Sep 13, 2019 | RMBS | ↓ Sell | 29,855 | $13.99 | $418K | Direct | Sep 16, 2019 (3d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other RMBS insiders
Open-market trades in the last 12 months
About Luc Seraphin's insider trades
Luc Seraphin is President and CEO at Rambus (RMBS). Since Mar 13, 2019, Luc has reported no open-market purchases and 53 sales worth $25.8M on SEC Form 4. In the last 12 months: 2 sales ($4.4M).
7 sales (9% of the value sold) were made under a Rule 10b5-1 trading plan, which is set up months in advance and runs on a schedule, so they say little about how the insider sees the stock today.
Their filings also include shares withheld for taxes (18 filings), grants and awards (14 filings), option exercises (13 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every RMBS insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.