CoreWeave Insiders Are Selling.Here’s Every Trade — And What It Actually Means.
CEO Michael Intrator, CSO Brian Venturo, and institutional giant Magnetar Financial have been selling CRWV shares steadily since April. We break down every filing — who sold, how much, at what price, and whether investors should be concerned.
CoreWeave Insiders Are Selling. Here’s Every Trade — And What It Actually Means.
CEO Michael Intrator, CSO Brian Venturo, and institutional giant Magnetar Financial have been selling CRWV shares steadily since April. We break down every filing — who sold, how much, at what price, and whether investors should be concerned.
FactSheets.com Staff · May 8, 2026 · Based on SEC Form 4 Filings
When a company’s insiders start selling stock aggressively, the market pays attention. CoreWeave (NASDAQ: CRWV) — the AI infrastructure darling that IPO’d in March 2025 and surged nearly 80% year-to-date — has seen a steady stream of Form 4 filings over the past several weeks showing significant share sales by its CEO, its Chief Strategy Officer, and one of its largest institutional backers, Magnetar Financial.
But not all insider selling is equal. Context matters enormously — and in CoreWeave’s case, the picture is more nuanced than the raw share counts suggest.
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Total Insider Shares Sold (Apr–May)
~1.8M
CEO + CSO combined, Class A shares
Magnetar Shares Sold
~212K
Direct equity sales, Apr–May 2026
Magnetar Remaining Holdings
~37M+
Indirect shares across multiple funds
Part 1: The Insiders — Executives Selling Under Pre-Arranged Plans
The two primary insiders selling CoreWeave stock are Michael Intrator (Co-founder, CEO & President) and Brian Venturo (Co-founder, Director & Chief Strategy Officer). Both are selling under Rule 10b5-1 trading plans — pre-scheduled programs that executives adopt in advance, typically when they do not possess material non-public information. This distinction is critical and we’ll explain why below.
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Michael Intrator
Co-Founder, CEO & President · CoreWeave Inc.
~307,693 shares sold
~$35.5M in proceeds · April 2026
Why he’s selling: Intrator adopted a Rule 10b5-1 trading plan on November 20, 2025 — months before these trades were executed. These sales were pre-scheduled and automatic, not reactive to earnings or recent news. After selling, he still directly holds 5.26 million Class A shares and maintains enormous indirect exposure through family trusts, a GRAT, and Omnadora Capital LLC — which holds over 21 million Class B shares convertible into Class A. His total economic stake in CoreWeave remains massive.
Date
Shares Sold
Avg. Price
Gross Proceeds
Plan Type
Apr 14, 2026
307,693
$113.42–$118.56
~$35.5M
10b5-1 Plan
Apr 21, 2026
307,693
$114–$120
~$35.8M
10b5-1 Plan
Note: Includes conversion of 107,693 Class B shares into Class A via Omnadora Capital LLC prior to sale. After all transactions, Intrator retains 5,266,501 Class A shares directly, plus 21,867,489+ Class B shares indirectly.
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Brian Venturo
Co-Founder, Director & Chief Strategy Officer · CoreWeave Inc.
~1.5M shares sold
~$161M in proceeds · April 2026
Why he’s selling: Venturo adopted his Rule 10b5-1 plan on November 13, 2025 — also months in advance. His sales are larger in volume than Intrator’s because they involve both direct sales and Class B-to-Class A conversions through the Venturo Family GST Exempt Trust and West Clay Capital LLC. Despite the significant share count, Venturo continues to hold large Class B positions. His selling appears to be systematic diversification — not a directional bet against the company. The plan was established when the stock was trading at significantly lower levels, suggesting the sales were priced and timed in advance.
Date
Entity
Shares Sold
Avg. Price
Gross Proceeds
Plan
Apr 20, 2026
Venturo Family Trust + West Clay Capital
1,125,000
$110.80–$118.05
~$127M
10b5-1
Apr 27, 2026
Venturo Family Trust + West Clay Capital
375,000
$105–$112
~$40.9M
10b5-1
Each sale included an equivalent conversion of Class B shares into Class A. Venturo retains 223,580 Class A shares directly plus substantial Class B positions through multiple vehicles including the 2023 Venturo GRAT and related trusts.
Part 2: Magnetar Financial — The Institution Playing Both Sides
Magnetar Financial is not a traditional insider — it’s a sophisticated quantitative hedge fund that was an early institutional backer of CoreWeave. Its selling activity is more complex than the executive filings and involves both direct equity sales and a notable derivative strategy worth understanding carefully.
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Magnetar Financial LLC
Quantitative Hedge Fund · Early Institutional Backer · Evanston, IL
~37M+ shares remaining
Across multiple funds & vehicles
What Magnetar is doing and why: Magnetar’s activity breaks into two distinct components — direct equity sales and a derivative overlay. On the equity side, they sold relatively modest amounts (212K shares) relative to their enormous total position. On the derivative side, they sold covered call options — a strategy that generates income and implies they believe the stock is unlikely to reach $175–$180 before December 2026. This is not a bearish bet — it’s sophisticated portfolio management by a fund that owns tens of millions of shares and wants to generate yield on its position while capping upside above certain price levels.
Direct Equity Sales
Date
Shares Sold
Price Range
Gross Proceeds
Type
Apr 24, 2026
2,770
$119.56
~$331K
Open market
May 1, 2026
209,157
$118.74–$121.50
~$25.1M
Open market, multiple blocks
Derivative Activity — Covered Call Sales
Date
Strategy
Underlying Shares
Strike Price
Expiry
Interpretation
May 4, 2026
Sold Call Options
1,000,000 shares
$175.00
Dec 18, 2026
Bullish but capped — income strategy
May 7–8, 2026
Sold Call Options
300,000 shares
$180.00
Dec 18, 2026
Same structure, higher strike
Plain English: By selling call options at $175–$180 strikes expiring December 2026, Magnetar is effectively saying: “We’re comfortable holding our CoreWeave position, we’ll collect premium income today, and if the stock rockets past $175 before year-end, we’re okay capping our upside there.” This is the behavior of a long-term bull who wants yield on their position — not a seller heading for the exits.
Post-transaction holdings across Magnetar funds include approximately: 19,888,169 shares (CW Opportunity 2 LP), 7,789,771 shares (Magnetar Capital Master Fund), 5,429,261 shares, and 4,784,835 shares across additional vehicles. Total indirect exposure remains approximately 37M+ Class A shares.
The Full Timeline: All Reported Sales in Order
April 14, 2026
CEO Intrator sells 307,693 shares via Omnadora Capital LLC
~$35.5M proceeds · 10b5-1 plan adopted Nov 20, 2025
April 20, 2026
CSO Venturo sells 1,125,000 shares via family trust + West Clay Capital
~$127M proceeds · 10b5-1 plan adopted Nov 13, 2025
April 21, 2026
CEO Intrator sells additional 307,693 shares
~$35.8M proceeds · Same pre-arranged plan
April 24, 2026
Magnetar Financial sells 2,770 Class A shares
~$331K proceeds · Open market
April 27, 2026
CSO Venturo sells additional 375,000 shares
~$40.9M proceeds · Same pre-arranged plan
May 1, 2026
Magnetar Financial sells 209,157 Class A shares across multiple blocks
~$25.1M proceeds · $118.74–$121.50 price range
May 4, 2026
Magnetar Financial sells call options on 1,000,000 shares at $175 strike
Expiry Dec 18, 2026 · Income/overlay strategy
May 7–8, 2026
Magnetar Financial sells call options on 300,000 shares at $180 strike
Expiry Dec 18, 2026 · Same structured overlay
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What Does 10b5-1 Actually Mean — And Should You Care?
Understanding Rule 10b5-1 Trading Plans
What it is: A Rule 10b5-1 plan is a pre-arranged trading program that executives adopt at a time when they do not possess material non-public information (MNPI). Once set, trades execute automatically on a schedule — the executive has no discretion over timing or price.
Why it matters here: Both Intrator and Venturo adopted their plans in November 2025 — before Q4 2025 earnings, before the Meta $21B deal, before the Anthropic partnership was announced, and well before the stock ran up nearly 80%. The sales were literally programmed months ago.
The caveat: 10b5-1 plans can be modified or cancelled. The fact that these are still executing as planned suggests neither executive has elected to stop them — which is a mild positive signal. If they truly believed the stock was about to surge significantly higher, they could pause the plan.
What they’re keeping: Despite the sales, both founders retain enormous economic stakes. Intrator holds 5.26M+ Class A shares directly and controls over 21M Class B shares through various vehicles. Venturo holds 223,580+ Class A and substantial Class B through trusts. These are not executives abandoning their positions.
“There are many reasons insiders sell stock — diversification, taxes, estate planning, mortgages. There is only one reason they buy.” — Classic Wall Street axiom
The Bull vs. Bear Read on This Data
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⚠ The Bear Read
Founders are selling hundreds of millions in stock less than 14 months after IPO — a short time horizon to begin significant diversification
The scale of Venturo’s selling ($167M+ in a single month) is unusually large and raises questions about conviction in near-term price levels
Magnetar’s covered call strategy at $175–$180 suggests the fund doesn’t expect the stock to significantly exceed those levels by year-end 2026
Post-earnings EPS miss and unchanged full-year guidance disappointed some investors — and insiders knew this was coming when their plans were in place
✓ The Bull Read
All executive sales are under 10b5-1 plans adopted in November 2025 — fully pre-arranged, not reactive to recent news or earnings
Both founders retain massive economic stakes in the company — Intrator alone holds 5.26M+ Class A plus 21M+ Class B shares
Magnetar sold only ~212K shares while retaining 37M+ — their direct equity sales represent less than 0.6% of their total CoreWeave position
Magnetar’s covered call strategy is a long investor’s income trade — you don’t sell covered calls on 1.3M shares if you’re planning to exit the position
The $99.4B revenue backlog reported May 7th — signed while plans were in place — represents the strongest bookings quarter in company history
The Bottom Line
The insider selling activity at CoreWeave is real, it’s large in dollar terms, and it deserves scrutiny. But the context significantly softens the signal. Both founders are selling under pre-arranged plans established months before any of the major 2026 catalysts materialized — and both are keeping the vast majority of their economic exposure to the company intact.
Magnetar’s activity is the most sophisticated piece of this puzzle. A fund that still holds 37+ million shares, sells a few hundred thousand, and simultaneously sells covered calls at $175–$180 is not a fund that’s bearish on CoreWeave. It’s a fund that’s managing a large concentrated position like a professional.
The real question investors should be asking isn’t “why are insiders selling?” — it’s “what does the $99.4 billion revenue backlog, the 1 GW active power milestone, and the Anthropic/Meta/Jane Street deal sweep tell us about the next 12–24 months?” That’s the data that matters most for the long-term thesis.
Insider selling is a yellow flag. The business fundamentals as reported on May 7th are a green flag. Weigh them accordingly.
This article is based on publicly available SEC Form 4 filings and is for informational purposes only. It does not constitute investment advice or a recommendation to buy or sell any security. CoreWeave (CRWV) involves substantial investment risk. Data sourced from SEC EDGAR, StockTitan, TipRanks, and Benzinga. FactSheets.com is not affiliated with CoreWeave, Magnetar Financial, or any party mentioned herein. Always consult a licensed financial advisor before making investment decisions. · FactSheets.com — ETF & Market Intelligence · May 8, 2026
