Rubrik, Inc.
Rubrik, Inc. (RBRK) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · RBRK · as of Mar 31, 2025
Ownership Breakdown
331
Institutional Holders
▲ 56 vs Q4
$4.89B
Total Inst. Value
▲ $511.85M vs Q4
205.81M
Shares Outstanding
freeFloat 76.48%
80.19M
13F Shares Held
▲ 13.16M vs Q4
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
RBRK largest shareholders · institutional ownership
Q1 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC services-prepackaged software | 6.95M | 4.50% | 4.50% | $423.51B | May 9, 2025 | ▲ 616.9K |
FMR LLC services-prepackaged software | 3.60M | 2.33% | 2.33% | $219.24B | May 12, 2025 | ▲ 333.4K |
NORGES BANK services-prepackaged software | 3.09M | 2.00% | 2.00% | $188.53B | May 11, 2026 | ▼ 1.15M |
FIRST TRUST ADVISORS LP services-prepackaged software | 3.08M | 2.00% | 2.00% | $187.93B | May 14, 2025 | ▼ 74.3K |
BAIN CAPITAL VENTURE INVESTORS, LLC services-prepackaged software | 2.76M | 1.79% | 1.79% | $168.28B | May 15, 2025 | — held |
D. E. SHAW & CO., INC. services-prepackaged software | 2.31M | 1.50% | 1.50% | $140.75B | May 15, 2025 | ▲ 884.3K |
BLACKROCK, INC. services-prepackaged software | 2.29M | 1.48% | 1.48% | $139.51B | May 2, 2025 | ▲ 496.0K |
VOYA INVESTMENT MANAGEMENT LLC services-prepackaged software | 2.25M | 1.46% | 1.46% | $137.03B | Jun 18, 2025 | ▲ 293.3K |
INSTITUTIONAL VENTURE MANAGEMENT XV, LLC services-prepackaged software | 2.17M | 1.41% | 1.41% | $132.25B | May 15, 2025 | — held |
LEGAL & GENERAL GROUP PLC services-prepackaged software | 2.02M | 1.31% | 1.31% | $123.20B | May 15, 2025 | ▲ 1.96M |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q1 2025 vs prior quarter
Q1 2025
32
Increased
+13.10M shares2
New Positions
first time holders12
Decreased
−3.60M shares0
Sold Out
fully exitedNet shares change (top 50)
+9.51M
+13.10M / −3.60M
Net new holders
+22
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
RBRK insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
20
Buy transactions
55
Sell transactions
0.36
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Chandna Asheem director | Jun 3, 2026 | Award | 3,709 | — | — | 6.2K | Form 4 ↗ |
MCLAUGHLIN MARK D director | Jun 3, 2026 | Award | 3,709 | — | — | 20.0K | Form 4 ↗ |
Mhatre Ravi director | Jun 3, 2026 | Award | 3,709 | — | — | 101.6K | Form 4 ↗ |
Wassenaar Yvonne director | Jun 3, 2026 | C-Conversion | 721 | — | — | 33.1K | Form 4 ↗ |
Wassenaar Yvonne director | Jun 3, 2026 | Award | 3,709 | — | — | 6.0K | Form 4 ↗ |
Wassenaar Yvonne director | Jun 3, 2026 | C-Conversion | 721 | — | — | 3.0K | Form 4 ↗ |
Wassenaar Yvonne director | Jun 3, 2026 | Sale | 721 | $80.73 | $58.2K | 2.3K | Form 4 ↗ |
THOMPSON JOHN WENDELL director | Jun 1, 2026 | C-Conversion | 11,000 | — | — | 50.0K | Form 4 ↗ |
THOMPSON JOHN WENDELL director | Jun 1, 2026 | Sale | 100 | $79.91 | $8.0K | 17.4K | Form 4 ↗ |
THOMPSON JOHN WENDELL director | Jun 1, 2026 | Sale | 300 | $82.45 | $24.7K | 17.1K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Rubrik, Inc. (RBRK) is primarily owned by institutional investors, who hold approximately 39.0% of total shares outstanding. Company insiders own approximately 23.52%, while retail and public investors account for the remaining 37.52%.
The largest institutional shareholder of Rubrik, Inc. is VANGUARD GROUP INC, holding approximately 6.95 million shares — equal to 4.50% of outstanding shares — as of March 31, 2025.
A total of 331 institutional investors currently hold RBRK stock, with a combined institutional value of approximately $4.89 billion as of the most recent 13F filing period.
Frequently asked questions
RBRK ownershipRubrik, Inc. (RBRK) is primarily owned by institutional investors, who hold approximately 39.0% of shares. The largest shareholder is VANGUARD GROUP INC with a 4.50% stake. Company insiders hold 23.52%. Data sourced from SEC Form 13F as of March 31, 2025.