Benchmark Capital Management Co. VIII, L.L.C. - 15 May 2026 Form 4 Insider Report for Cerebras Systems Inc. (CBRS)

Reporting relationship
10%+ Owner
Issuer ticker
CBRS
Reported as of
15 May 2026
Net transaction value
$0
Source evidence Original filing metadata and source links for verification. 5 source fields
SEC form
4
Accepted by SEC
19 May 2026, 17:00:43 UTC
Prior SEC filing
13 May 2026
Next SEC filing
01 Jul 2026
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
/s/ An-Yen Hu by power of attorney for Benchmark Capital Management Co. VIII, L.L.C.

Key filing fact

Benchmark Capital Management Co. VIII, L.L.C. filed Form 4 for Cerebras Systems Inc. (CBRS) on 19 May 2026.

Key facts

  • This page summarizes Benchmark Capital Management Co. VIII, L.L.C.'s Form 4 filing for Cerebras Systems Inc. (CBRS).
  • 8 reported transactions and 72 derivative rows are listed below.
  • Accepted by SEC: 19 May 2026, 17:00.

Change

  • Previous filing in this sequence was filed on 13 May 2026.
  • Current net transaction value: $0.

Research use

  • This tells you what this filing adds before you inspect full transaction and derivative tables.
  • You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (9)

CIK 0001593049 Primary reporting owner

Benchmark Capital Management Co. VIII, L.L.C.

Relationship
10%+ Owner
Address
2965 WOODSIDE ROAD, WOODSIDE
Signature
/s/ An-Yen Hu by power of attorney for Benchmark Capital Management Co. VIII, L.L.C.
Signature date
19 May 2026
CIK 0001593052

Benchmark Capital Partners VIII, L.P.

Relationship
10%+ Owner
Address
2965 WOODSIDE ROAD, WOODSIDE
Signature
/s/ An-Yen Hu by power of attorney for Benchmark Capital Management Co. VIII, L.L.C., the General Partner of Benchmark Capital Partners VIII, L.P.
Signature date
19 May 2026
CIK 0001597415

Benchmark Founders' Fund VIII, L.P.

Relationship
10%+ Owner
Address
2965 WOODSIDE ROAD, WOODSIDE
Signature
/s/ An-Yen Hu by power of attorney for Benchmark Capital Management Co. VIII, L.L.C., the General Partner of Benchmark Founders' Fund VIII, L.P.
Signature date
19 May 2026
CIK 0001597399

Benchmark Founders' Fund VIII-B, L.P.

Relationship
10%+ Owner
Address
2965 WOODSIDE ROAD, WOODSIDE
Signature
/s/ An-Yen Hu by power of attorney for Benchmark Capital Management Co. VIII, L.L.C., the General Partner of Benchmark Founders' Fund VIII-B, L.P.
Signature date
19 May 2026
CIK 0001754445

Benchmark Capital Management Co. IX, L.L.C.

Relationship
10%+ Owner
Address
2965 WOODSIDE ROAD, WOODSIDE
Signature
/s/ An-Yen Hu, Managing Member of Benchmark Capital Management Co. IX, L.L.C.
Signature date
19 May 2026
CIK 0001754447

Benchmark Capital Partners IX, L.P.

Relationship
10%+ Owner
Address
2965 WOODSIDE ROAD, WOODSIDE
Signature
/s/ An-Yen Hu, Managing Member of Benchmark Capital Management Co. IX, L.L.C., the General Partner of Benchmark Founders' Fund IX, L.P.
Signature date
19 May 2026
CIK 0001754444

Benchmark Founders' Fund IX, L.P.

Relationship
10%+ Owner
Address
2965 WOODSIDE ROAD, WOODSIDE
Signature
/s/ An-Yen Hu, Managing Member of Benchmark Capital Management Co. IX, L.L.C., the General Partner of Benchmark Capital Partners IX, L.P.
Signature date
19 May 2026
CIK 0001756980

Benchmark Founders' Fund IX-A, L.P.

Relationship
10%+ Owner
Address
2965 WOODSIDE ROAD, WOODSIDE
Signature
/s/ An-Yen Hu, Managing Member of Benchmark Capital Management Co. IX, L.L.C., the General Partner of Benchmark Founders' Fund IX-A, L.P.
Signature date
19 May 2026
CIK 0001754351

Benchmark Founders' Fund IX-B, L.P.

Relationship
10%+ Owner
Address
2965 WOODSIDE ROAD, WOODSIDE
Signature
/s/ An-Yen Hu, Managing Member of Benchmark Capital Management Co. IX, L.L.C., the General Partner of Benchmark Founders' Fund IX-B, L.P.
Signature date
19 May 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

CBRS transaction Derivative

Series A Preferred Stock

Conversion of derivative security

Transaction value
Shares
-12,588,235
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
12,588,235
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series A Preferred Stock

Conversion of derivative security

Transaction value
Shares
-12,588,235
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
12,588,235
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series A Preferred Stock

Conversion of derivative security

Transaction value
Shares
-12,588,235
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
12,588,235
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series A Preferred Stock

Conversion of derivative security

Transaction value
Shares
-12,588,235
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
12,588,235
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series A Preferred Stock

Conversion of derivative security

Transaction value
Shares
-12,588,235
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
12,588,235
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series A Preferred Stock

Conversion of derivative security

Transaction value
Shares
-12,588,235
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
12,588,235
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series A Preferred Stock

Conversion of derivative security

Transaction value
Shares
-12,588,235
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
12,588,235
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series A Preferred Stock

Conversion of derivative security

Transaction value
Shares
-12,588,235
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
12,588,235
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series A Preferred Stock

Conversion of derivative security

Transaction value
Shares
-12,588,235
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
12,588,235
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series B Preferred Stock

Conversion of derivative security

Transaction value
Shares
-1,425,394
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
1,425,394
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series B Preferred Stock

Conversion of derivative security

Transaction value
Shares
-1,425,394
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
1,425,394
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series B Preferred Stock

Conversion of derivative security

Transaction value
Shares
-1,425,394
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
1,425,394
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series B Preferred Stock

Conversion of derivative security

Transaction value
Shares
-1,425,394
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
1,425,394
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series B Preferred Stock

Conversion of derivative security

Transaction value
Shares
-1,425,394
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
1,425,394
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series B Preferred Stock

Conversion of derivative security

Transaction value
Shares
-1,425,394
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
1,425,394
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series B Preferred Stock

Conversion of derivative security

Transaction value
Shares
-1,425,394
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
1,425,394
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series B Preferred Stock

Conversion of derivative security

Transaction value
Shares
-1,425,394
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
1,425,394
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series B Preferred Stock

Conversion of derivative security

Transaction value
Shares
-1,425,394
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
1,425,394
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series C Preferred Stock

Conversion of derivative security

Transaction value
Shares
-335,293
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
335,293
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series C Preferred Stock

Conversion of derivative security

Transaction value
Shares
-335,293
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
335,293
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series C Preferred Stock

Conversion of derivative security

Transaction value
Shares
-335,293
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
335,293
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series C Preferred Stock

Conversion of derivative security

Transaction value
Shares
-335,293
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
335,293
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series C Preferred Stock

Conversion of derivative security

Transaction value
Shares
-335,293
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
335,293
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series C Preferred Stock

Conversion of derivative security

Transaction value
Shares
-335,293
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
335,293
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series C Preferred Stock

Conversion of derivative security

Transaction value
Shares
-335,293
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
335,293
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series C Preferred Stock

Conversion of derivative security

Transaction value
Shares
-335,293
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
335,293
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series C Preferred Stock

Conversion of derivative security

Transaction value
Shares
-335,293
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
335,293
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series D Preferred Stock

Conversion of derivative security

Transaction value
Shares
-30,968
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
30,968
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series D Preferred Stock

Conversion of derivative security

Transaction value
Shares
-30,968
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
30,968
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series D Preferred Stock

Conversion of derivative security

Transaction value
Shares
-30,968
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
30,968
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series D Preferred Stock

Conversion of derivative security

Transaction value
Shares
-30,968
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
30,968
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series D Preferred Stock

Conversion of derivative security

Transaction value
Shares
-30,968
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
30,968
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series D Preferred Stock

Conversion of derivative security

Transaction value
Shares
-30,968
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
30,968
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series D Preferred Stock

Conversion of derivative security

Transaction value
Shares
-30,968
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
30,968
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series D Preferred Stock

Conversion of derivative security

Transaction value
Shares
-30,968
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
30,968
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series D Preferred Stock

Conversion of derivative security

Transaction value
Shares
-30,968
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
30,968
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series E Preferred Stock

Conversion of derivative security

Transaction value
Shares
-5,457
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
5,457
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series E Preferred Stock

Conversion of derivative security

Transaction value
Shares
-5,457
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
5,457
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series E Preferred Stock

Conversion of derivative security

Transaction value
Shares
-5,457
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
5,457
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series E Preferred Stock

Conversion of derivative security

Transaction value
Shares
-5,457
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
5,457
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series E Preferred Stock

Conversion of derivative security

Transaction value
Shares
-5,457
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
5,457
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series E Preferred Stock

Conversion of derivative security

Transaction value
Shares
-5,457
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
5,457
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series E Preferred Stock

Conversion of derivative security

Transaction value
Shares
-5,457
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
5,457
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series E Preferred Stock

Conversion of derivative security

Transaction value
Shares
-5,457
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
5,457
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series E Preferred Stock

Conversion of derivative security

Transaction value
Shares
-5,457
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
5,457
Exercise price
Footnotes
F1, F2
CBRS transaction Derivative

Series G Preferred Stock

Conversion of derivative security

Transaction value
Shares
-689,990
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
689,990
Exercise price
Footnotes
F1, F3
CBRS transaction Derivative

Series G Preferred Stock

Conversion of derivative security

Transaction value
Shares
-689,990
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
689,990
Exercise price
Footnotes
F1, F3
CBRS transaction Derivative

Series G Preferred Stock

Conversion of derivative security

Transaction value
Shares
-689,990
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
689,990
Exercise price
Footnotes
F1, F3
CBRS transaction Derivative

Series G Preferred Stock

Conversion of derivative security

Transaction value
Shares
-689,990
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
689,990
Exercise price
Footnotes
F1, F3
CBRS transaction Derivative

Series G Preferred Stock

Conversion of derivative security

Transaction value
Shares
-689,990
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
689,990
Exercise price
Footnotes
F1, F3
CBRS transaction Derivative

Series G Preferred Stock

Conversion of derivative security

Transaction value
Shares
-689,990
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
689,990
Exercise price
Footnotes
F1, F3
CBRS transaction Derivative

Series G Preferred Stock

Conversion of derivative security

Transaction value
Shares
-689,990
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
689,990
Exercise price
Footnotes
F1, F3
CBRS transaction Derivative

Series G Preferred Stock

Conversion of derivative security

Transaction value
Shares
-689,990
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
689,990
Exercise price
Footnotes
F1, F3
CBRS transaction Derivative

Series G Preferred Stock

Conversion of derivative security

Transaction value
Shares
-689,990
Change %
-100%
Price
$0.000000*
Shares after
0
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class B Common Stock
Underlying amount
689,990
Exercise price
Footnotes
F1, F3
CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares
+14,385,347
Change %
Price
$0.000000*
Shares after
14,385,347
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class A Common Stock
Underlying amount
14,385,347
Exercise price
Footnotes
F2, F4
CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares
+14,385,347
Change %
Price
$0.000000*
Shares after
14,385,347
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class A Common Stock
Underlying amount
14,385,347
Exercise price
Footnotes
F2, F4
CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares
+14,385,347
Change %
Price
$0.000000*
Shares after
14,385,347
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class A Common Stock
Underlying amount
14,385,347
Exercise price
Footnotes
F2, F4
CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares
+14,385,347
Change %
Price
$0.000000*
Shares after
14,385,347
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class A Common Stock
Underlying amount
14,385,347
Exercise price
Footnotes
F2, F4
CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares
+14,385,347
Change %
Price
$0.000000*
Shares after
14,385,347
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class A Common Stock
Underlying amount
14,385,347
Exercise price
Footnotes
F2, F4
CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares
+14,385,347
Change %
Price
$0.000000*
Shares after
14,385,347
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class A Common Stock
Underlying amount
14,385,347
Exercise price
Footnotes
F2, F4
CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares
+14,385,347
Change %
Price
$0.000000*
Shares after
14,385,347
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class A Common Stock
Underlying amount
14,385,347
Exercise price
Footnotes
F2, F4
CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares
+14,385,347
Change %
Price
$0.000000*
Shares after
14,385,347
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class A Common Stock
Underlying amount
14,385,347
Exercise price
Footnotes
F2, F4
CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares
+14,385,347
Change %
Price
$0.000000*
Shares after
14,385,347
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class A Common Stock
Underlying amount
14,385,347
Exercise price
Footnotes
F2, F4
CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares
+689,990
Change %
Price
$0.000000*
Shares after
689,990
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class A Common Stock
Underlying amount
689,990
Exercise price
Footnotes
F3, F4
CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares
+689,990
Change %
Price
$0.000000*
Shares after
689,990
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class A Common Stock
Underlying amount
689,990
Exercise price
Footnotes
F3, F4
CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares
+689,990
Change %
Price
$0.000000*
Shares after
689,990
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class A Common Stock
Underlying amount
689,990
Exercise price
Footnotes
F3, F4
CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares
+689,990
Change %
Price
$0.000000*
Shares after
689,990
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class A Common Stock
Underlying amount
689,990
Exercise price
Footnotes
F3, F4
CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares
+689,990
Change %
Price
$0.000000*
Shares after
689,990
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class A Common Stock
Underlying amount
689,990
Exercise price
Footnotes
F3, F4
CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares
+689,990
Change %
Price
$0.000000*
Shares after
689,990
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class A Common Stock
Underlying amount
689,990
Exercise price
Footnotes
F3, F4
CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares
+689,990
Change %
Price
$0.000000*
Shares after
689,990
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class A Common Stock
Underlying amount
689,990
Exercise price
Footnotes
F3, F4
CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares
+689,990
Change %
Price
$0.000000*
Shares after
689,990
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class A Common Stock
Underlying amount
689,990
Exercise price
Footnotes
F3, F4
CBRS transaction Derivative

Class B Common Stock

Conversion of derivative security

Transaction value
Shares
+689,990
Change %
Price
$0.000000*
Shares after
689,990
Date
15 May 2026
Ownership
See Footnote
Underlying class
Class A Common Stock
Underlying amount
689,990
Exercise price
Footnotes
F3, F4
* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Each share of Series A, Series B, Series C, Series D, Series E and Series G Preferred Stock automatically converted into one share of Class B Common Stock upon completion of the Issuer's initial public offering pursuant to its terms and has no expiration date.

Footnote F2

The shares are held by Benchmark Capital Partners VIII, L.P. ("BCP VIII"), as nominee for itself, Benchmark Founders' Fund VIII, L.P. ("BFF VIII") and Benchmark Founders' Fund VIII-B, L.P. ("BFF VIII-B"). Benchmark Capital Management Co. VIII, L.L.C. ("BCMC VIII"), the general partner of each of BCP VIII, BFF VIII and BFF VIII-B, may be deemed to have sole voting and dispositive power over such shares. Each entity disclaims the existence of a "group" and disclaims beneficial ownership of the securities, except to the extent of such entity's pecuniary interest in such securities.

Footnote F3

The shares are held by Benchmark Capital Partners IX, L.P. ("BCP IX"), as nominee for itself, Benchmark Founders' Fund IX, L.P. ("BFF IX"), Benchmark Founders' Fund IX-A, L.P. ("BFF IX-A"), and Benchmark Founders' Fund IX-B, L.P. ("BFF IX-B"). Benchmark Capital Management Co. IX, L.L.C. ("BCMC IX"), the general partner of each of BCP IX, BFF IX, BFF IX-A and BFF IX-B, may be deemed to have sole voting and dispositive power over such shares. Each such entity disclaims the existence of a "group" and disclaims beneficial ownership of any securities, except to the extent of such entity's pecuniary interest in such securities.

Footnote F4

Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.

SEC remarks

This report is one of two reports, each on a separate Form 4, but relating to the same holdings being filed by entities affiliated with Benchmark.

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