McBee Brannin 4

What Happened

• Brannin McBee, CoreWeave’s Chief Development Officer, converted a total of 143,750 Class B shares into Class A shares (three conversion entries: 100,000; 16,665; 27,085) and sold those shares in multiple open‑market/private transactions on March 23, 2026.
• The sales totaled approximately $11,863,368 across 15 sale entries (prices reported as weighted averages for groups of trades between $81.06 and $84.73). Footnotes indicate individual trade prices were in ranges roughly $80.37 to $85.26.

Key Details

• Transaction date: March 23, 2026.
• Shares converted: 143,750 Class B → Class A (per filing; Class B is convertible 1:1 to Class A per company charter).
• Shares sold: 143,750; Total proceeds ≈ $11,863,368.
• Price detail: Weighted average sale prices reported between $81.06 and $84.73; footnotes list underlying trade ranges spanning about $80.37–$85.26.
• Plan/authority: Sales were effected pursuant to a Rule 10b5‑1 trading plan adopted by the reporting person on Nov 17, 2025 (Footnote F2).
• Ownership notes: Some reported securities are held by the Brannin J. McBee 2022 Irrevocable Trust and/or directly by the reporting person’s spouse (Footnotes F10, F8).
• Filing notes: This Form 4 is Part 1 of 2 for this reporting person; the filing continues on Part 2. The provided portion does not show “shares owned after” the transactions.

Context

• Conversion explanation: The “C” (conversion) entries reflect converting Class B common stock into Class A common stock (not a cash purchase); the converted Class A shares were then sold.
• Trading-plan context: Sales under a pre‑existing 10b5‑1 plan are typically pre‑scheduled transactions and do not, by themselves, indicate an insider’s change in view about the company.
• No late‑filing flag is shown in the supplied data; review Part 2 of the filing for complete ownership totals and any additional disclosures.