Canis Minor 2025 GRAT sold $1.36 million of CoreWeave Class A shares (Form 4 of Brannin McBee, part 2 of 2)
The Canis Minor 2025 GRAT, of which the form says the spouse of CoreWeave chief development officer Brannin McBee was the sole beneficiary and trustee, sold 18,750 Class A shares on Mar 9, 2026, at an average of $72.61 a share, for $1.36 million. The shares were held indirectly, and the form lists a conversion of 18,750 Class B shares into Class A shares that day and states 0 Class A shares held after the last sale line. The sale was made under a Rule 10b5-1 trading plan adopted by McBee on Nov 17, 2025, a footnote says. The SEC Form 4, the form an insider files when trading company shares, was filed on Mar 11, 2026, and is part 2 of 2 for McBee.1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17
How each figure was checked
- by_holderthe sale lines of this form, by who held the shares: Canis Minor 2025 GRAT (held indirectly): 18750 shares for 1361350.3214 USD
- Footnote F2 of the Form 4 filed Mar 11, 2026 (it is attached to that document's line N1, N2, N3, N4, N5, D1)2025Footnotes of the SEC Form 4 filed 2026-03-11 ↗
- ownerBrannin McBee (filed as McBee Brannin)
- relationshipofficer (Chief Development Officer)
- shares18,750
- first_dateMar 9, 2026
- average_price$72.61
- value$1.36 million
- shares_afterafter the last sale line the form states 0 shares of Class A Common Stock held indirectly (Canis Minor 2025 GRAT)
- holding4 sale lines held indirectly (Canis Minor 2025 GRAT)
- line N1conversion of a derivative security (code C): 18750 shares acquired on 2026-03-09, no price stated; held indirectly (Canis Minor 2025 GRAT); 18750 owned after the line
- line D1derivative line, conversion of a derivative security (code C): 18750 shares disposed on 2026-03-09, no price stated; held indirectly (Canis Minor 2025 GRAT); 881250 owned after the line
- line D1 shares_after881,250 shares of Class B Common Stock owned after this line, held indirectly (Canis Minor 2025 GRAT)
- Footnote F1 of the Form 4 filed Mar 11, 2026 (it is attached to that document's line N1, D1)Footnotes of the SEC Form 4 filed 2026-03-11 ↗
- Footnote F3 of the Form 4 filed Mar 11, 2026 (it is attached to that document's line N2, N3, N4, N5)November 17, 2025Footnotes of the SEC Form 4 filed 2026-03-11 ↗
- filed_onMar 11, 2026
- Remarks of the Form 4 filed Mar 11, 2026 (they speak for the form as a whole, not for a line)2Footnotes of the SEC Form 4 filed 2026-03-11 ↗
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The record
- Issuer
- CoreWeave (CIK 1769628, filed as CoreWeave, Inc.)
- Form
- 4
- Accession
- 0001769628-26-000112
- Filed
- Mar 11, 2026
- Period of report
- Mar 9, 2026
- Reporting owner
- Brannin McBee (CIK 2058103, filed as McBee Brannin)
- Relationship
- officer (Chief Development Officer)
- Rule 10b5-1 checkbox
- Ticked
- Line 1
- C (conversion of a derivative security) · 18,750 Class A Common Stock · Mar 9, 2026 · acquired, indirectly, Canis Minor 2025 GRAT · 18,750 held after · footnotes F1 and F2
- Line 2
- S (sale) · 5,736 Class A Common Stock at $71.7282 · Mar 9, 2026 · disposed, indirectly, Canis Minor 2025 GRAT · 13,014 held after · footnotes F2, F3 and F4
- Line 3
- S (sale) · 8,740 Class A Common Stock at $72.4113 · Mar 9, 2026 · disposed, indirectly, Canis Minor 2025 GRAT · 4,274 held after · footnotes F2, F3 and F5
- Line 4
- S (sale) · 1,091 Class A Common Stock at $73.7641 · Mar 9, 2026 · disposed, indirectly, Canis Minor 2025 GRAT · 3,183 held after · footnotes F2, F3 and F6
- Line 5
- S (sale) · 3,183 Class A Common Stock at $74.3217 · Mar 9, 2026 · disposed, indirectly, Canis Minor 2025 GRAT · 0 held after · footnotes F2, F3 and F7
- Derivative line 1
- C (conversion of a derivative security) · 18,750 Class B Common Stock · Mar 9, 2026 · disposed, indirectly, Canis Minor 2025 GRAT · 881,250 held after · footnotes F1 and F2
- Footnote F1
- Each share of Class B Common Stock is convertible into one share of the Issuer's Class A Common Stock at any time, at the election of the holder or automatically upon certain transfers, whether or not for value, or upon the occurrence of certain events or conditions described in the Issuer's Amended and Restated Certificate of Incorporation.
- Footnote F2
- The reported securities are directly held by the Canis Minor 2025 GRAT, of which the reporting person's spouse is the sole beneficiary and trustee.
- Footnote F3
- The reported transaction represents a sale effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 17, 2025.
- Footnote F4
- The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $71.03 to $72.02, inclusive.
- Footnote F5
- The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $72.03 to $73.00, inclusive.
- Footnote F6
- The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $73.03 to $74.02, inclusive.
- Footnote F7
- The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $74.03 to $74.48, inclusive.
- Footnote F8
- The reported securities are directly held by the Canis Major SM Trust (the "Canis Trust"), an irrevocable trust with a third-party trustee, of which the reporting person's minor child is beneficiary. The reporting person has the power to remove and replace the Canis Trust's trustee.
- Footnote F9
- The reported securities are directly held of record by the reporting person's child.
- Footnote F10
- The reported securities are directly held by the Canis Major 2024 Irrevocable Trust LLC of which the reporting person serves as manager.
- Footnote F11
- The reported securities are directly held by the Canis Major 2025 Family Trust LLC, of which the reporting person serves as manager.
- Footnote F12
- The reported securities are directly held by the Canis Minor 2025 Family Trust LLC, of which the reporting person serves as manager.
- Remarks
- This Form 4 is Part 2 of 2 for this reporting person. Transactions by the reporting person are continued on this Part 2.
Insider purchases and sales of CoreWeave shares, since Aug 29, 2025
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