Welcome to our dedicated page for Rambus Del SEC filings (Ticker: RMBS), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
The Rambus Inc. (RMBS) SEC filings page on Stock Titan provides access to the company’s official regulatory disclosures as filed with the U.S. Securities and Exchange Commission. As a Nasdaq Global Select Market issuer, Rambus submits periodic and current reports that detail its financial performance, business developments, and material events.
Rambus’ filings include annual reports on Form 10-K and quarterly reports on Form 10-Q, which present information on revenue from product sales, royalties, and contract and other revenue, as well as operating expenses, cash flows, and segment-related metrics. These reports also contain management’s discussion and analysis and risk factor disclosures relevant to its semiconductor and IP licensing activities.
The company also files current reports on Form 8-K to announce material events, such as quarterly financial results. Recent 8-K filings reference earnings press releases for quarters ended June 30 and September 30, 2025, providing investors with detailed GAAP and non-GAAP financial data and commentary on business performance.
In addition, investors can review proxy statements and other governance-related filings that address topics such as board structure, executive compensation, and shareholder matters, as available in the SEC’s EDGAR system.
On Stock Titan, AI-powered tools help summarize lengthy Rambus filings, highlighting key figures, trends, and disclosures so users can quickly understand the implications of 10-Ks, 10-Qs, and 8-Ks without reading every page. The platform also surfaces relevant sections for topics like revenue composition, non-GAAP adjustments, and risk discussions.
Use this page to track new RMBS filings as they are posted to EDGAR, review historical reports, and compare disclosures across reporting periods with the assistance of AI-generated insights.
Rambus Inc. SVP and General Counsel John Shinn reported equity compensation activity and related tax withholding. On February 1, 2026, he acquired 17,276 shares of common stock at $0 through performance restricted stock units that vest based on company performance and continued service. On the same date, 9,884 shares at $113.71 per share were withheld to cover his tax liability from restricted stock unit vesting. After these transactions, Shinn directly owned 27,580 shares of Rambus common stock.
Rambus Inc. SVP and CFO Desmond Lynch reported equity-related transactions in company common stock. On February 1, 2026, he acquired 34,554 shares at $0 upon vesting of performance restricted stock units tied to company metrics and continued service. On the same date, 22,105 shares were withheld at $113.71 per share to satisfy tax obligations from restricted stock vesting. After these transactions, Lynch directly owned 67,891 shares of Rambus common stock.
Rambus Inc. President and CEO Seraphin Luc reported equity compensation and related tax withholding in company stock. On February 1, 2026, he acquired 143,744 shares of common stock at $0 per share, represented by performance restricted stock units that vest based on company performance metrics and continued service through February 1, 2026.
On the same date, 92,523 shares of common stock were withheld at a price of $113.71 per share to satisfy his tax liability arising from the vesting of restricted stock units. After these transactions, he directly beneficially owned 370,984 shares of Rambus common stock, including 522 shares acquired through the Rambus Inc. 2015 Employee Stock Purchase Plan.
Rambus executive EVP, COO Fan Xianzhi Sean reported equity compensation activity in company stock. On February 1, 2026, he acquired 148,802 shares of Rambus common stock at $0 per share through vesting of performance restricted stock units, each representing one share.
On the same date, 92,403 shares were withheld at $113.71 per share to cover tax liabilities related to restricted stock unit vesting. After these transactions, he directly beneficially owned 193,954 shares of Rambus common stock.
Rambus Inc. filed a current report to disclose that it issued an earnings press release for the quarter ended December 31, 2025. The company furnished this press release as an exhibit and specified that it is not treated as filed for liability purposes under the Exchange Act.
BlackRock, Inc. has filed an amended Schedule 13G reporting beneficial ownership of 15,060,232 shares of Rambus Inc. common stock, representing 14.0% of the outstanding class. BlackRock reports sole power to vote 14,776,143 shares and sole power to dispose of 15,060,232 shares, with no shared voting or dispositive power.
The filing reflects holdings by certain BlackRock business units, while other disaggregated units are excluded. Various underlying persons have rights to dividends or sale proceeds, but no single person has more than five percent of Rambus’s outstanding common shares. BlackRock certifies that the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of Rambus.
Rambus Inc. executive reports small stock gift
A Rambus Inc. (RMBS) executive who serves as EVP and COO reported a bona fide gift of 300 shares of Rambus common stock on November 21, 2025. The transaction was reported on a Form 4 as a disposition coded "G" at a price of $0, indicating it was a gift rather than a sale. After this transaction, the executive beneficially owns 137,555 shares of Rambus common stock, held directly.
Rambus Inc. executive Brian Wu, EVP and COO, reported a Form 4 transaction reflecting a bona fide gift of company stock. On 11/19/2025, Wu disposed of 300 shares of Rambus common stock as a gift at a reported price of $0.00, meaning he received no compensation for the transfer. Following this transaction, he beneficially owned 137,855 shares in direct ownership. The filing notes explicitly that no compensation was given in relation to the gift.
Rambus Inc. (RMBS) director reported open‑market sales of common stock. On 11/07/2025, the reporting person sold 5,000 shares at a weighted average price of $102.352, with trades ranging from $102.343 to $102.455. On 11/10/2025, an additional 4,000 shares were sold at an exact price of $111.785.
After these transactions, 20,394 shares were indirectly beneficially owned, held by the Stang Family Trust for which the reporting person serves as a trustee.
Rambus Inc. reported strong Q3 2025 results driven by memory interface chips. Revenue reached $178.5 million, up from $145.5 million a year ago. Product revenue set a quarterly record at $93.3 million, with royalties at $65.1 million and contract and other revenue at $20.1 million. Gross profit was $141.9 million and operating income was $63.3 million. Net income was $48.4 million, or diluted EPS of $0.44.
For the nine months, revenue totaled $517.4 million and operating cash flow was $260.2 million. Cash, cash equivalents and marketable securities were $673.3 million as of September 30, 2025. Shares outstanding were 107,650,133 as of September 30, 2025. The company repurchased 0.1 million shares for approximately $5.8 million year-to-date under its 2020 program, with authorization remaining for about 5.6 million shares.
Geographically in Q3, revenue included $91.7 million from South Korea and $37.6 million from Singapore. The company recorded an uncertain tax position reserve tied to South Korea withholding tax refund claims, reducing related long-term tax receivables and payables to zero with no tax expense impact in the period.
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