Every Form 4 that Lam Research Corp (LRCX) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow LRCX and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full LRCX filings page.
LAM RESEARCH CORP (LRCX) reported that President and CEO Timothy Archer exercised employee stock options for 30,000 shares of common stock on September 9, 2026 at an exercise price of $30.033 per share and sold 30,000 shares of common stock at $319.26 per share the same day. The option exercise reduced his option position to 31,400 options, and the sale and related transactions were effected pursuant to a Rule 10b5-1 trading plan adopted on February 24, 2026. Archer also reports indirect holdings of common stock through his 401(k) plan and his spouse’s 401(k) plan.
LAM RESEARCH CORP (LRCX) director Bethany Mayer reported selling 9,557 sharesSeptember 9, 2026weighted average price of $314.74 per share$314.08 and $314.99 per share. After these transactions, the trust held 20,995 shares1,635 shares
LAM RESEARCH CORP (LRCX) senior vice president Varadarajan Seshasayee reported option exercises and related stock sales on September 2, 2026. He exercised employee stock options for 39,750 shares of common stock at exercise prices of $59.881 and $30.033 per share, and sold a total of 59,750 shares of common stock at $291.32 per share pursuant to a Rule 10b5-1 trading plan adopted on May 4, 2026. He also reports indirect ownership of 2,366.911 shares of common stock through a 401(k) plan, and a footnote states that his reported holdings include shares underlying unvested restricted stock units.
LAM RESEARCH CORP (LRCX) reported an insider transaction by Chief Legal Officer Ava Harter. On August 31, 2026, Harter sold 5,000 shares of common stock at $302.46 per share in an open market or private transaction pursuant to a Rule 10b5-1 trading plan adopted on April 28, 2026. Following this sale, Harter directly holds 42,462.455 shares of Lam Research common stock, and this amount includes shares subject to unvested restricted stock units.
Timothy Archer, President and CEO of Lam Research, exercised employee stock options for 30,000 shares at $30.0330 per share and on the same day sold 30,000 common shares at $300.0000 per share under a Rule 10b5-1 trading plan adopted on February 24, 2026. He now holds 61,400.0000 stock options directly, plus indirect holdings of 48,025.7200 shares in a 401(k) and 5,670.0020 shares in a spouse 401(k).
LAM RESEARCH CORP reports that Chief Legal Officer Ava Harter had 5790.0000 shares of common stock automatically withheld on 2026-08-05 to satisfy tax withholding on vesting restricted stock units at $307.4200 per share. Following this tax-withholding disposition, she holds 47462.4550 shares, including shares subject to unvested restricted stock units.
Lam Research Corp director Abhijit Y. Talwalkar executed an open-market sale of 18,282 shares of Common Stock on July 13, 2026 at $335.0000 per share, pursuant to a Rule 10b5-1 trading plan adopted on March 11, 2026. Following the transaction, he directly owns 87,142 shares, which include shares subject to unvested restricted stock units.
LAM Research President and CEO Timothy Archer exercised employee stock options and sold shares in an open-market transaction. He exercised options for 30,000 shares of common stock at $30.033 per share and sold 30,000 shares at $390.01 per share on July 2, 2026.
After these transactions, Archer directly owned 1,075,966 shares of LAM Research common stock, with additional indirect holdings in his and his spouse’s 401(k) accounts. The filing notes that the sale was made under a pre-arranged Rule 10b5-1 trading plan adopted on February 24, 2026, and that his reported holdings include shares tied to unvested restricted stock units.
Lam Research Corp director Eric Brandt reported open-market sales of 54,500 shares of common stock on June 12, 2026. The trades were executed under a pre-arranged Rule 10b5-1 trading plan adopted on February 6, 2026, at prices ranging from $355.39 to $373.36 per share. Following these transactions, he directly owns 144,705 shares, including shares subject to unvested restricted stock units.
LAM RESEARCH CORP director Eric Brandt reported a series of open‑market sales of company common stock. On June 11, 2026, he sold a total of 54,500 shares in multiple transactions under a pre‑arranged Rule 10b5‑1 trading plan adopted on February 6, 2026.
The reported weighted‑average sale prices for these trades ranged from about $337 to $364 per share. Following the transactions, Brandt directly owned 199,205 shares of Lam Research common stock, and this amount includes shares subject to unvested restricted stock units.
Neil J. Fernandes, Senior Vice President of LAM RESEARCH CORP, sold 7,659 shares of common stock at $309.60 per share in an open-market transaction pursuant to a Rule 10b5-1 trading plan. He now holds 58,470 shares directly and 1,015.395 shares indirectly through a 401(k) plan.
LAM Research Senior Vice President Neil J. Fernandes reported an open-market sale of 18,170 shares of LAM Research common stock at $255.14 per share. The transaction is coded as an open-market sale and was carried out under a Rule 10b5-1 trading plan adopted on November 17, 2025.
Following this sale, Fernandes directly holds 66,129 shares of LAM Research common stock. He also has an indirect holding of 1,015.399 shares through a 401(k) plan, and this amount includes shares subject to unvested restricted stock units.
LAM RESEARCH CORP Chief Legal Officer Ava Harter reported an option exercise-and-sale transaction in company stock. On April 27, 2026, she exercised employee stock options to acquire 6,010 shares of common stock at $77.039 per share and then sold 6,010 shares in an open-market transaction at $258.66 per share.
After these transactions, Harter directly owned about 53,205.455 shares of Lam Research common stock. A footnote states that this amount includes shares subject to unvested restricted stock units.
Lam Research Corp director Abhijit Y. Talwalkar reported a bona fide gift of 4,571 shares of common stock on March 10, 2026. The shares were transferred at a reported price of $0.00 per share, consistent with a non-cash charitable or personal gift. Following this disposition, Talwalkar directly holds 105,424 shares of Lam Research common stock, and this amount includes shares underlying unvested restricted stock units.
Lam Research Chief Financial Officer & EVP Douglas R. Bettinger reported multiple stock transactions. He exercised employee stock options for 51,270 shares at $49.092 and 26,480 shares at $98.153, receiving an equivalent number of common shares. On the same day, he sold 50,057 common shares at a weighted average price of $224.03, in transactions between $223.90 and $224.39. After these moves, he directly owned 1,081,705 common shares, and this amount includes shares underlying unvested restricted stock units.
LAM RESEARCH CORP Chief Legal Officer Ava Harter reported an open-market sale of 1,500 shares of common stock on March 4, 2026 at an average price of $222.66 per share. After this transaction, she directly owns 53,205.455 shares, which include shares subject to unvested restricted stock units.
Lam Research Chief Financial Officer and EVP Douglas R. Bettinger reported multiple option exercises and a share sale. He exercised employee stock options into 66,? Wait, I must be precise: 16,620 + 37,980 + 11,710 = 66,310 shares; this sum is explicitly derivable, but instruction allows derived numbers only if needed. To avoid risk, I will not state the total, just list legs. Let's restart summary clearly.
Lam Research Chief Financial Officer and EVP Douglas R. Bettinger exercised several employee stock options into common stock on March 2, 2026, then sold 40,329 common shares in an open-market transaction at a weighted average price of $230.22. After these transactions he directly owned 1,054,012 common shares, including shares underlying unvested restricted stock units.
Lam Research Corp's Chief Legal Officer, Ava Harter, reported an open-market sale of company stock. On March 2, 2026, she sold 4,000 shares of Lam Research common stock at a price of $232.50 per share. After this transaction, she directly owned 54,705.455 shares of common stock.
Lam Research Chief Financial Officer and EVP Douglas R. Bettinger reported a mix of equity awards and tax-related share dispositions on February 27, 2026. He received 18,820 Market-based Performance Restricted Stock Units and 12,547 shares of common stock as stock awards, both at a reported price of $0 per share.
The restricted stock units vest in three equal installments on February 27, 2027, February 27, 2028, and February 27, 2029, and the market-based units can vest between 0% and 150% based on total shareholder return versus the PHLX Semiconductor Total Return Index during the performance period from February 2, 2026 through February 1, 2029. To cover tax withholding on vesting, 48,673 shares of common stock were automatically withheld at $233.89 per share, leaving him with 1,028,031 directly owned common shares and 18,820 market-based performance units following the reported transactions.
LAM RESEARCH CORP Senior Vice President Varadarajan Seshasayee reported equity award grants and related tax withholding transactions. On 02/27/2026, he received 18,820 market-based performance restricted stock units and a separate grant of 12,547 shares of common stock, both at a stated price of $0.00 per share.
The common stock units will vest in three equal installments on 02/27/2027, 02/27/2028, and 02/27/2029. The market-based performance restricted stock units can vest between 0% and 150% on 02/27/2029, based on Lam Research’s total shareholder return versus the PHLX Semiconductor Total Return Index over the period from 02/02/2026 through 02/01/2029.
Several blocks of common stock, including 26,126 shares at $233.89 per share, were automatically withheld to cover tax obligations upon restricted stock unit vesting.
LAM RESEARCH CORP Senior Vice President Vahid Vahedi reported equity awards and related tax-withholding share dispositions. On 02/27/2026, he received 9,053 shares of common stock and 11,065 market-based performance restricted stock units at $0 per unit as equity grants.
The restricted stock units vest in three equal installments on 02/27/2027, 02/27/2028, and 02/27/2029. The market-based performance units can vest between 0% and 150% on 02/27/2029, based on Lam Research’s total shareholder return versus the PHLX Semiconductor Total Return Index from 02/02/2026 through 02/01/2029.
To cover tax withholding on vesting, shares of common stock were automatically withheld in several transactions on 02/27/2026 and 03/27/2026, including 3,382, 24,675, 2,994, and 1,923 shares at $233.89 per share. After the most recent transaction on 03/27/2026, he directly held 276,896 shares of common stock and 11,065 performance units.
Lam Research chief legal officer Ava Harter reported stock awards and related tax withholdings. On 02/27/2026, she received grants of 7,106 shares of common stock and 8,685 market-based performance restricted stock units at $0.00 per share. The common stock units will vest in three equal installments on 02/27/2027, 02/27/2028, and 02/27/2029. The performance units may vest between 0% and 150% on 02/27/2029, based on Lam Research’s total shareholder return versus the PHLX Semiconductor Total Return Index from 02/02/2026 through 02/01/2029. To satisfy tax withholding obligations upon vesting of restricted stock units, 1,988 shares were withheld on 02/27/2026 and 3,199 shares were withheld on 03/27/2026, at a price of $233.89 per share, leaving 58,705.455 common shares directly owned after the March transaction. The reported holdings include shares underlying unvested restricted stock units.
LAM RESEARCH CORP Senior Vice President Neil J. Fernandes reported equity awards and related tax withholding transactions. He received 10,113 market-based performance restricted stock units and 8,274 shares of common stock on February 27, 2026 as grant or award acquisitions at no cash cost.
The time-based restricted stock units vest in three equal installments on February 27, 2027, 2028, and 2029. The market-based performance units can vest between 0% and 150% on February 27, 2029, depending on Lam Research’s total shareholder return versus the PHLX Semiconductor Total Return Index over the performance period from February 2, 2026 through February 1, 2029. Multiple entries labeled as code F show an aggregate disposition of common shares at $233.89 per share to satisfy tax withholding obligations upon vesting, and his directly held common stock position after these transactions was 83,951 shares, including shares subject to unvested restricted stock units.
LAM RESEARCH CORP President and CEO Timothy Archer reported equity compensation and related tax withholdings. He received a grant of 76,580 Market-based Performance Restricted Stock Units and 51,053 shares of common stock on 02/27/2026. The RSUs and performance units vest over time through 02/27/2029, while 134,624, 9,975, 8,111 and 19,584 common shares were automatically withheld at $233.89 per share to cover tax obligations as his restricted stock units vested.
LAM RESEARCH CORP Executive Vice President Patrick J. Lord reported multiple Form 4 transactions in common stock on 2026-02-27. Shares were automatically withheld at $233.89 per share to cover tax obligations upon vesting of restricted stock units. After these tax-withholding dispositions, he directly owned 98,848 common shares, which the disclosure states includes unvested restricted stock units.
Lam Research Corp executive Christina Correia, the company's CVP and Chief Accounting Officer, reported multiple equity-related transactions dated February 27, 2026. She was granted 1,362 Market-based Performance Restricted Stock Units, which will vest between 0% and 150% on February 27, 2029 based on Lam Research's total shareholder return performance.
She also acquired 3,180 shares of common stock and another 12,979 shares of common stock through restricted stock unit awards. These restricted stock units vest in three installments on February 27, 2027, February 27, 2028, and February 27, 2029, with one award vesting 25%, 25%, and 50% on those dates. Several additional transactions labeled code F represent shares of common stock automatically withheld at a price of $233.89 per share to cover tax withholding obligations upon vesting. After these transactions, Correia directly owned 58,589 shares of common stock, including shares subject to unvested restricted stock units.
Lam Research President and CEO Timothy Archer reported a bona fide gift of 7,080 shares of common stock on February 24, 2026. After this gift, he directly owned 1,196,859 shares, including shares subject to unvested restricted stock units. He also reported indirect holdings of 48,025.775 shares through a 401(k) and 5,670.061 shares through his spouse’s 401(k).
Lam Research Corporation director Eric Brandt reported selling common stock in two transactions. On February 6, 2026, he sold 17,000 shares at $220.95 per share and 18,000 shares at $230 per share.
After these sales, Brandt beneficially owned 253,705 shares of Lam Research common stock directly. This reported amount includes shares that are subject to unvested restricted stock units.
Research Corp director Anirudh Devgan reported receiving 1,141 shares of common stock on February 6, 2026 in a transaction coded “A” at a price of $0 per share, indicating an equity award. The reported amount includes shares subject to unvested restricted stock units.
Following this grant, Devgan beneficially owns 1,141 shares directly and 312 shares indirectly through a trust, reflecting his combined direct and indirect holdings in the company’s common stock.
Lam Research Chief Financial Officer and EVP Douglas R. Bettinger reported the vesting of equity awards tied to the company’s stock performance. On 02/03/2026, 76,920 shares of common stock were acquired at a price of $0 through a transaction coded “M,” reflecting the settlement of equity-based compensation.
The transaction relates to 51,280 market-based performance restricted stock units granted on 03/01/2023, which vest between 0% and 150% based on Lam Research’s total shareholder return versus a semiconductor index over the 02/01/2023–01/31/2026 performance period. Following this vesting event, Bettinger directly holds 1,064,157 shares of Lam Research common stock, a figure that includes shares subject to unvested restricted stock units.
Lam Research Corporation executive Christina Correia, CVP and Chief Accounting Officer, reported settlement of equity awards tied to company performance. On 02/03/2026, 6,030 market-based performance restricted stock units were exercised, resulting in 9,045 shares of common stock at a price of $0 per share. Following this transaction, she directly beneficially owned 60,637 shares of common stock, and this amount includes shares underlying unvested restricted stock units. The original 6,030-unit performance award was granted on 03/01/2023 and is scheduled to vest between 0% and 150% on 03/01/2026 based on Lam Research total shareholder return relative to the PHLX Semiconductor Total Return Index over the period from 02/01/2023 through 01/31/2026.
Lam Research senior vice president Neil J. Fernandes reported an equity award vesting that increased his direct shareholdings. On February 3, 2026, 14,380 market-based performance restricted stock units, originally granted on March 1, 2023, were settled, resulting in the acquisition of 21,570 shares of common stock at $0 per share under transaction code M. After this transaction, he held 92,768 Lam Research common shares directly and 1,015.399 shares indirectly through a 401(k). The award’s vesting level is tied to Lam Research total shareholder return versus the PHLX Semiconductor total return index over the period from February 1, 2023 through January 31, 2026.
Lam Research executive Patrick J. Lord reported the vesting of a performance-based equity award. On 02/03/2026, he acquired 63,345 shares of Lam Research common stock at a price of $0 per share through a transaction coded "M," reflecting the settlement of Market-based Performance Restricted Stock Units originally granted on 03/01/2023.
Following this transaction, Lord directly beneficially owned 138,803 common shares, an amount that includes shares subject to unvested restricted stock units. The 2023 award’s payout is tied to Lam Research’s total shareholder return versus the PHLX Semiconductor total return index over a performance period from 02/01/2023 through 01/31/2026.
Lam Research senior vice president Vahedi Vahid reported an equity award transaction involving both derivative and common shares. On 02/03/2026, 33,180 market-based performance restricted stock units with a $0 exercise price were converted, and 49,770 shares of common stock were acquired at $0, bringing his directly held stake to 300,817 shares, including shares subject to unvested restricted stock units.
The performance units were originally granted on 03/01/2023 and are designed to vest between 0% and 150% on 03/01/2026. Their vesting depends on Lam Research’s total shareholder return, including dividends, compared with the PHLX Semiconductor sector total return index over the performance period from 02/01/2023 through 01/31/2026.
Lam Research senior vice president Varadarajan Seshasayee acquired 53,925 shares of common stock on 02/03/2026 through the exercise of market-based performance restricted stock units at $0 per share. Following the transaction, he directly beneficially owned 249,564 common shares, including shares subject to unvested restricted stock units, and indirectly held 2,366.932 shares through a 401(k) plan.
The exercised award originally covered 35,950 market-based performance restricted stock units granted on 03/01/2023, with vesting tied to Lam Research total shareholder return versus the PHLX Semiconductor sector index over a performance period from 02/01/2023 through 01/31/2026.
Lam Research president and CEO Timothy Archer reported equity award activity involving both derivative units and common stock. On 02/04/2026, an award of 181,020 market-based performance restricted stock units coded "M" was settled at an exercise price of $0, leaving 0 such units directly owned. On the same date, Archer acquired 271,530 shares of Lam Research common stock, also coded "M" at a price of $0, and directly held 1,203,939 common shares following the transaction. He also indirectly holds 48,025.775 shares through a 401(k) account and 5,670.061 shares through a spouse’s 401(k). The footnotes explain that the original 181,020 performance units were granted on 03/01/2023 with vesting between 0% and 150% based on Lam Research total shareholder return versus the PHLX Semiconductor total return index over the performance period from 02/01/2023 through 01/31/2026, with vesting scheduled on 03/01/2026.
Lam Research Corp. reported insider trading activity by its President and CEO on 12/17/2025. The filing shows sales and an option exercise in Lam Research common stock carried out under a Rule 10b5-1 trading plan adopted on August 19, 2025.
The CEO sold 50,000 shares of common stock at $163.86 per share, then exercised an employee stock option for 113,300 shares at an exercise price of $17.675 per share. Those 113,300 shares were then sold on the same day at $163.86 per share. After these transactions, the CEO directly beneficially owned 932,409 shares of Lam Research common stock, which includes shares subject to unvested restricted stock units.
The filing also lists indirect holdings of 48,025.816 shares through a 401(k) plan and 5,670.097 shares through the spouse's 401(k) plan, reflecting additional indirect economic exposure to Lam Research stock.
LAM RESEARCH CORP executive leadership reported an insider share sale. The company’s Chief Financial Officer and Executive Vice President filed a Form 4 disclosing the sale of 40,080 shares of common stock on 11/14/2025. The transaction was coded as a sale and carried a weighted average sale price of $150.6 per share, based on multiple trades within a narrow price range. Following this transaction, the officer reports beneficial ownership of 987,237 shares of Lam Research common stock, which includes shares subject to unvested restricted stock units.
Lam Research (LRCX) director reported insider transactions. On 11/07/2025, the reporting person acquired 1,635 shares at $0 and sold 30 shares at $159.52 pursuant to a Rule 10b5-1 trading plan adopted on November 12, 2024. On 11/10/2025, 1,622 shares were transferred as a gift to the Mayer Family Trust for no consideration.
Following these transactions, the reporting person held 1,635 shares directly and 30,552 shares indirectly via the trust. The filing notes that the person is trustee and the trust’s beneficiaries are the reporting person and immediate family, and that the reporting person remains the beneficial owner of the trust-held securities.
Lam Research (LRCX) disclosed that a company director acquired 1,635 shares of common stock on 11/07/2025 at a reported price of $0.
After this transaction, the director beneficially owned 18,475 shares, held directly. The reported total includes shares subject to unvested restricted stock units.
Lam Research (LRCX) Form 4: A director acquired 1,635 shares of common stock on 11/07/2025 at a price of $0. Following this transaction, the director beneficially owns 9,664 shares.
The filing notes that the reported amount includes shares subject to unvested restricted stock units. Ownership is listed as direct.
Lam Research (LRCX) reported an insider transaction by a director. On 11/07/2025, the director acquired 1,635 shares of common stock at $0. Following the transaction, the director beneficially owned 5,322 shares directly and 560 shares indirectly via a trust. The reported direct amount includes shares subject to unvested restricted stock units.
Lam Research (LRCX) director reported the acquisition of 1,635 shares of common stock at $0 on 11/07/2025, according to a Form 4.
Following the transaction, the reporting person beneficially owned 9,135 shares, held in direct ownership. The filing notes this amount includes shares subject to unvested restricted stock units.
Lam Research (LRCX): A company director reported an equity grant on a Form 4. On 11/07/2025, the director acquired 1,635 shares of common stock at $0, typically reflecting a stock or restricted stock unit award. Following this transaction, the director beneficially owned 191,375 shares.
The reported total includes shares subject to unvested restricted stock units, and the ownership is listed as direct.
Lam Research (LRCX) filed a Form 4 reporting insider activity. A director acquired 1,635 shares of common stock at a price of $0 on 11/07/2025. Following this transaction, the director’s beneficial ownership stands at 5,342 shares, held directly.
The footnote states the reported amount includes shares subject to unvested restricted stock units.
Lam Research (LRCX) disclosed an insider equity transaction by a director. On 11/07/2025, the director acquired 1,635 shares of common stock at a reported price of $0, consistent with an equity award. Following the transaction, the director beneficially owned 288,705 shares. The filing notes that this amount includes shares subject to unvested restricted stock units.
LAM Research (LRCX) reported an insider transaction by a director. On 11/07/2025, the director acquired 1,635 shares of common stock at $0.
After the transaction, the director beneficially owned 109,995 shares, held directly. The reported total includes shares subject to unvested restricted stock units.
Lam Research (LRCX) reported director insider activity. On 11/06/2025, the director transferred 2,950 common shares to the Sohail Family Trust at $0 (Code G), shifting those holdings from direct to indirect. Following the transfer, direct ownership for that lot moved to 0, while the trust held 33,580 shares indirectly. The reporting person remains the beneficial owner of the securities held by the trust.
On 11/07/2025, the director acquired 1,635 common shares at $0 (Code A), bringing direct beneficial ownership to 1,635. The reported totals include shares subject to unvested restricted stock units.
Lam Research (LRCX) director reported a sale of 1,298 shares of common stock on 11/03/2025 at $159.99 per share (Transaction Code S). The trade was made pursuant to a Rule 10b5-1 trading plan adopted on November 12, 2024.
After the sale, the reporting person beneficially owned 1,652 shares directly and 28,930 shares indirectly held by a trust.
Lam Research (LRCX) director reported a Form 4 reflecting a tax withholding transaction. On 10/31/2025, 664 shares of common stock were withheld under transaction code F at a price of $157.46 per share. The filing states these shares were automatically withheld upon vesting of restricted stock units to satisfy tax obligations. Following the transaction, the reporting person beneficially owned 8,029 shares, held directly.