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Cerebras Systems Inc. (CBRS) reported that CEO and President Andrew D. Feldman converted 93,497 shares of Class B Common Stock into the same number of Class A shares, leaving him with 13,945,134 Class B shares held directly. On the same date, he sold an aggregate 26,644 Class A shares in multiple open-market transactions at per-share prices generally between about $214.85 and $240.01. According to the company’s disclosure, these sales were executed as a non-discretionary “sell to cover” solely to satisfy tax withholding obligations arising from restricted stock unit settlement and are permitted under an IPO lock-up agreement. Separately, an entity transaction transferred 298 Class A shares as a pro-rata, in-kind distribution to the Feldman Bravo Family Trust, and two GRATs each hold Class B shares convertible into 50,000 Class A shares with no expiration date.
Cerebras Systems Inc. (CBRS) had a Form 4 filed by entities affiliated with Benchmark reporting an indirect holding of Class B Common Stock, rather than a new trade. Benchmark AI Infrastructure Fund, L.P. holds 2,527,646 shares of Class B Common Stock as nominee for itself and Benchmark AI Infrastructure Fund B, L.P. Benchmark AI Infrastructure Management Co., L.L.C., as general partner of both funds, may be deemed to have sole voting and dispositive power over these shares. Each Class B share is convertible into one share of Class A Common Stock, either automatically upon certain transfers or at any time at the option of the holder. The reporting entities state they disclaim the existence of a “group” and beneficial ownership of the securities except to the extent of their pecuniary interest.
Cerebras Systems Inc. (CBRS) reported insider activity by Benchmark-affiliated investment funds involving a conversion and distribution of shares. On August 17, 2026, these entities converted 2,402,352 shares of Class B Common Stock into the same number of Class A Common Stock shares in accordance with the Class B terms. The same 2,402,352 Class A shares were then disposed of through a pro-rata, in-kind distribution by Benchmark Capital Partners VIII, L.P. and affiliated funds to their partners, not for additional consideration, under a Rule 10b5-1 trading plan adopted on May 14, 2026. Benchmark Capital Partners IX, L.P. and affiliated funds continue to hold Class B shares that are convertible into 689,990 Class A shares on an indirect basis.
Cerebras Systems Inc. (CBRS) director Eric Vishria reported multiple indirect transactions in Class A Common Stock on August 17, 2026. Entities he controls, including The Vishria Revocable Trust, sold 68,268 shares in open-market transactions under a Rule 10b5-1 trading plan at weighted-average prices in the mid-$220s to $250 per share. On the same date, entities associated with him received 110,950 shares at no additional consideration through a pro-rata, in-kind distribution from Benchmark Capital Partners VIII, L.P. and affiliated funds.
Cerebras Systems Inc. (CBRS) reports that officer/director Andrew D. Feldman has filed a notice of proposed sales of Class A common stock under Rule 144. The shares are expected to come from the vesting of restricted stock units on 08/18/2026 as compensation, with Morgan Stanley Smith Barney LLC listed as the broker. The filing also lists a prior Rule 144 sale of Class A common stock by Feldman within the past three months.
Cerebras Systems Inc. (CBRS) reported a planned Rule 144 sale by officer Sean Lie of Class A common stock. The planned sale covers 34,706 shares arising from vesting of restricted stock units on 08/18/2026, with an indicated aggregate market value of about $5,356,338.86, to be handled through Morgan Stanley Smith Barney LLC on NASDAQ. In the prior three months, Lie reported selling 10,033 shares of Class A common stock on 06/25/2026 for an aggregate market value of $1,706,311.13.
Cerebras Systems Inc. (CBRS) officer Dhiraj Mallick has filed a notice under Rule 144 for a potential sale of Class A common stock. The planned sale covers 38,889 shares, expected to be sold through Morgan Stanley Smith Barney LLC after vesting of restricted stock units on 08/18/2026. The filing also lists a prior sale of 36,131 shares of Class A common stock on 06/25/2026.
Cerebras Systems Inc. (CBRS) director Steven Vassallo, through various Foundation Capital entities and family trusts, reported multiple Class B-to-Class A conversions and related restructurings on June 24 and August 14, 2026. Entities associated with him converted an aggregate of 1,912,792 shares of Class B Common Stock into Class A Common Stock for no additional consideration and made pro rata, in-kind distributions among affiliated funds and management entities. A revocable family trust associated with Vassallo sold a total of 50,000 shares of Class A Common Stock in multiple transactions at weighted‑average prices within disclosed ranges of approximately $215.79–$220.15 per share. Across these holdings, Vassallo is described as a manager or co‑trustee and disclaims beneficial ownership except to the extent of his pecuniary interest in the applicable entities or trusts, and the transactions are not indicated as occurring under a Rule 10b5‑1 trading plan.
Cerebras Systems Inc. (CBRS) reported that several affiliated Foundation Capital funds, all greater-than-10% holders, undertook internal equity restructurings involving its dual-class shares. On June 24 and August 14, 2026, these entities converted an aggregate of 1,912,792 shares of Class B Common Stock into the same number of Class A Common Stock for no additional consideration, consistent with the 1-for-1 convertibility of Class B into Class A. They then made pro rata, in-kind distributions of Class A shares from the funds to their general partners, limited partners, and members, and certain affiliated management entities received corresponding shares. The filing states these in-kind distributions were not purchases or sales of securities, and the reporting entities disclaim beneficial ownership beyond their pecuniary interests. No Rule 10b5-1 trading plan is indicated.
Cerebras Systems Inc. (CBRS) director Susan Lior reported restructuring-related movements in Class A common stock involving investment and estate-planning entities. An Eclipse-affiliated fund group made a pro-rata, in-kind distribution of 2,248,855 shares to its partners for no additional consideration, reducing Lior’s indirect position there while she received 104,811 shares directly and 119,816 shares indirectly through an estate-planning vehicle she controls. Separately from these transfers, Eclipse-managed entities continue to hold several million Cerebras shares over which Lior may be deemed to have voting, investment, and dispositive power.