FilingsForm 4

Cerebras Systems · Form 4 · Director · Sale, held indirectly

From the public record

Filed Aug 18, 2026

Value$10.91 million, held indirectly

Shares50,000, held indirectly

Average price$218.18

FiledAug 18

The record

Issuer: Cerebras Systems (CIK 2021728, filed as Cerebras Systems Inc.)
Form: 4
Accession: 0001567929-26-000003
Filed: Aug 18, 2026
Period of report: Jun 24, 2026
Reporting owner: Steven Vassallo (CIK 1567929, filed as Vassallo Steven)
Relationship: director
Rule 10b5-1 checkbox: Not ticked
Line 1: C (conversion of a derivative security) · 1,391,131 Class A Common Stock · Jun 24, 2026 · acquired, indirectly, By Foundation Capital VIII, L.P. · 1,391,131 held after · footnotes F1 and F2
Line 2: C (conversion of a derivative security) · 29,963 Class A Common Stock · Jun 24, 2026 · acquired, indirectly, By Foundation Capital VIII Principals Fund, LLC · 29,963 held after · footnotes F1 and F3
Line 3: C (conversion of a derivative security) · 109,141 Class A Common Stock · Jun 24, 2026 · acquired, indirectly, By Foundation Capital Leadership Fund II, L.P. · 109,141 held after · footnote F1
Line 4: C (conversion of a derivative security) · 347,782 Class A Common Stock · Aug 14, 2026 · acquired, indirectly, By Foundation Capital VIII, L.P. · 1,738,913 held after · footnotes F1 and F2
Line 5: C (conversion of a derivative security) · 7,490 Class A Common Stock · Aug 14, 2026 · acquired, indirectly, By Foundation Capital VIII Principals Fund, L.L.C. · 37,453 held after · footnotes F1 and F3
Line 6: C (conversion of a derivative security) · 27,285 Class A Common Stock · Aug 14, 2026 · acquired, indirectly, By Foundation Capital Leadership Fund II, L.P. · 136,426 held after · footnotes F1 and F4
Line 7: J (other acquisition or disposition) · 1,738,913 Class A Common Stock at $0.00 · Aug 14, 2026 · disposed, indirectly, By Foundation Capital VIII, L.P. · 0 held after · footnotes F2 and F5
Line 8: J (other acquisition or disposition) · 37,453 Class A Common Stock at $0.00 · Aug 14, 2026 · disposed, indirectly, By Foundation Capital VIII Principals Fund, L.L.C. · 0 held after · footnotes F3 and F6
Line 9: J (other acquisition or disposition) · 136,426 Class A Common Stock at $0.00 · Aug 14, 2026 · disposed, indirectly, By Foundation Capital Leadership Fund II, L.P. · 0 held after · footnotes F4 and F7
Line 10: J (other acquisition or disposition) · 449,885 Class A Common Stock at $0.00 · Aug 14, 2026 · acquired, indirectly, By Foundation Capital Management Co. VIII, L.L.C. · 449,885 held after · footnotes F8 and F9
Line 11: J (other acquisition or disposition) · 449,885 Class A Common Stock at $0.00 · Aug 14, 2026 · disposed, indirectly, By Foundation Capital Management Co. VIII, L.L.C. · 0 held after · footnotes F9 and F10
Line 12: J (other acquisition or disposition) · 1,368 Class A Common Stock at $0.00 · Aug 14, 2026 · acquired, indirectly, By Foundation Capital Management Co. LF II, L.L.C. · 1,368 held after · footnotes F11 and F12
Line 13: J (other acquisition or disposition) · 99,599 Class A Common Stock at $0.00 · Aug 14, 2026 · acquired, indirectly, By Revocable Trust · 99,599 held after · footnotes F13 and F14
Line 14: J (other acquisition or disposition) · 50,944 Class A Common Stock at $0.00 · Aug 14, 2026 · acquired, indirectly, By Irrevocable Trust · 50,944 held after · footnotes F15 and F16
Line 15: S (sale) · 6,081 Class A Common Stock at $216.38 · Aug 14, 2026 · disposed, indirectly, By Revocable Trust · 93,518 held after · footnotes F14 and F17
Line 16: S (sale) · 16,671 Class A Common Stock at $217.47 · Aug 14, 2026 · disposed, indirectly, By Revocable Trust · 76,847 held after · footnotes F14 and F18
Line 17: S (sale) · 11,834 Class A Common Stock at $218.46 · Aug 14, 2026 · disposed, indirectly, By Revocable Trust · 65,013 held after · footnotes F14 and F19
Line 18: S (sale) · 14,323 Class A Common Stock at $219.41 · Aug 14, 2026 · disposed, indirectly, By Revocable Trust · 50,690 held after · footnotes F14 and F20
Line 19: S (sale) · 1,091 Class A Common Stock at $219.97 · Aug 14, 2026 · disposed, indirectly, By Revocable Trust · 49,599 held after · footnotes F14 and F21
Derivative line 1: C (conversion of a derivative security) · 1,391,131 Class B Common Stock · Jun 24, 2026 · disposed, indirectly, By Foundation Capital VIII, L.P. · 12,520,174 held after · footnotes F1, F2 and F22
Derivative line 2: C (conversion of a derivative security) · 29,963 Class B Common Stock · Jun 24, 2026 · disposed, indirectly, By Foundation Capital VIII Principals Fund, LLC · 269,664 held after · footnotes F1, F3 and F22
Derivative line 3: C (conversion of a derivative security) · 109,141 Class B Common Stock · Jun 24, 2026 · disposed, indirectly, By Foundation Capital Leadership Fund II, L.P. · 982,270 held after · footnotes F1, F4 and F22
Derivative line 4: C (conversion of a derivative security) · 347,782 Class B Common Stock · Aug 14, 2026 · disposed, indirectly, By Foundation Capital VIII, L.P. · 12,172,392 held after · footnotes F1, F2 and F22
Derivative line 5: C (conversion of a derivative security) · 7,490 Class B Common Stock · Aug 14, 2026 · disposed, indirectly, By Foundation Capital VIII Principals Fund, LLC · 262,174 held after · footnotes F1, F3 and F22
Derivative line 6: C (conversion of a derivative security) · 27,285 Class B Common Stock · Aug 14, 2026 · disposed, indirectly, By Foundation Capital Leadership Fund II, L.P. · 954,985 held after · footnotes F1, F4 and F22
Footnote F1: Each share of Class B Common Stock was converted into one share of Class A Common Stock for no additional consideration.
Footnote F2: Securities are directly held by Foundation Capital VIII, L.P. ("FC8"). Foundation Capital Management Co. VIII, L.L.C. ("FCM8") is the general partner of FC8. The Reporting Person is a manager of FCM8 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.
Footnote F3: Securities are directly held by Foundation Capital VIII Principals Fund, L.L.C. ("FC8P"). Foundation Capital Management Co. VIII, L.L.C. ("FCM8") is the manager of FC8P. The Reporting Person is a manager of FCM8 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.
Footnote F4: Securities are directly held by Foundation Capital Leadership Fund II, L.P. ("FCLF2"). Foundation Capital Management Co. LF II, L.L.C. ("FCMLF2") is the general partner of FCLF2. The Reporting Person is a manager of FCMLF2 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.
Footnote F5: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8 to its general partner and limited partners without additional consideration.
Footnote F6: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FC8P to its general partner and limited partners without additional consideration.
Footnote F7: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCLF2 to its general partner and limited partners without additional consideration.
Footnote F8: Represents receipt of shares in the distributions in kind described in footnotes (5) and (6).
Footnote F9: Securities are directly held by FCM8. The Reporting Person is a manager of FCM8 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.
Footnote F10: Represents a pro rata, in-kind distribution, and not a purchase or sale of securities, by FCM8 to its members without additional consideration.
Footnote F11: Represents receipt of shares in the distribution in kind described in footnote (7).
Footnote F12: Securities are directly held by FCMLF2. The Reporting Person is a manager of FCMLF2 and may be deemed to beneficially own such shares. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his pecuniary interest therein.
Footnote F13: Represents receipt of shares in the distributions in kind described in footnotes (6) and (10).
Footnote F14: The securities are held by a revocable family trust, of which the Reporting Person is a co-trustee. The Reporting Person disclaims beneficial ownership of such shares except to the extent of his proportionate pecuniary interest therein.
Footnote F15: Represents receipt of shares in the distribution in kind described in footnote (10).
Footnote F16: The securities are held by an irrevocable GST trust, of which the Reporting Person is a co-trustee. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.
Footnote F17: The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $215.79 to $216.78 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities sold at each separate price within the range set forth in this footnote.
Footnote F18: The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $216.87 to $217.86 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities sold at each separate price within the range set forth in this footnote.
Footnote F19: The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $217.90 to $218.89 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities sold at each separate price within the range set forth in this footnote.
Footnote F20: The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $218.90 to $219.89 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities sold at each separate price within the range set forth in this footnote.
Footnote F21: The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $219.90 to $220.15 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of securities sold at each separate price within the range set forth in this footnote.
Footnote F22: Each share of Class B Common Stock is convertible into one share of Class A Common Stock at any time at the option of the holder and does not expire.