MaxCyte, Inc.
MaxCyte, Inc. (MXCT) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · MXCT · as of Sep 30, 2025
Ownership Breakdown
112
Institutional Holders
▼ 6 vs Q2
$110.77M
Total Inst. Value
▼ $44.99M vs Q2
107.12M
Shares Outstanding
freeFloat 91.17%
70.09M
13F Shares Held
▼ 1.27M vs Q2
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
MXCT largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. services-commercial physical & biological research | 9.98M | 9.38% | 9.38% | $15.77B | Nov 12, 2025 | ▼ 218.3K |
CADIAN CAPITAL MANAGEMENT, LP services-commercial physical & biological research | 8.23M | 7.73% | 7.73% | $13.00B | Nov 14, 2025 | ▼ 686.9K |
MIRABELLA FINANCIAL SERVICES LLP services-commercial physical & biological research | 8.20M | 7.71% | 7.71% | $12.96B | Dec 15, 2025 | ▲ 1.60M |
MORGAN STANLEY services-commercial physical & biological research | 6.70M | 6.29% | 6.29% | $10.58B | May 27, 2026 | ▼ 329.6K |
VANGUARD GROUP INC services-commercial physical & biological research | 5.59M | 5.25% | 5.25% | $8.83B | Nov 7, 2025 | ▼ 13.6K |
VITRUVIAN PARTNERS LLP services-commercial physical & biological research | 5.04M | 4.74% | 4.74% | $7.97B | Nov 10, 2025 | — held |
MUDITA ADVISORS LLP services-commercial physical & biological research | 3.37M | 3.17% | 3.17% | $5.33B | Nov 13, 2025 | — held |
AXA INVESTMENT MANAGERS S.A. services-commercial physical & biological research | 2.77M | 2.61% | 2.61% | $4.38B | Nov 14, 2025 | NEW |
GEODE CAPITAL MANAGEMENT, LLC services-commercial physical & biological research | 2.56M | 2.41% | 2.41% | $4.05B | Nov 12, 2025 | ▲ 79.1K |
STATE STREET CORP services-commercial physical & biological research | 2.27M | 2.13% | 2.13% | $3.58B | Nov 14, 2025 | ▲ 83.9K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
17
Increased
+3.67M shares5
New Positions
first time holders18
Decreased
−5.23M shares0
Sold Out
fully exitedNet shares change (top 50)
1.56M
+3.67M / −5.23M
Net new holders
+4
5 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
MXCT insider trading · insider activity
Source: SEC Form 4
Insiders have been net buyers of shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
1
Buy transactions
0
Sell transactions
0.00
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 |
|---|---|---|---|---|---|---|---|
Ahuja Parmeet Chief Financial Officer | Apr 15, 2026 | Award | 187,500 | — | — | 187.5K | Form 4 ↗ |
Ahuja Parmeet Chief Financial Officer | Mar 30, 2026 | Award | 375,000 | $0.68 | $253.6K | 375.0K | Form 4 ↗ |
Masoud Maher President and CEO | Mar 27, 2026 | Award | 600,000 | $0.68 | $410.4K | 600.0K | Form 4 ↗ |
Masoud Maher President and CEO | Mar 27, 2026 | Award | 300,000 | — | — | 475.0K | Form 4 ↗ |
Swirsky Douglas J CHIEF FINANCIAL OFFICER | Mar 17, 2026 | Sale | 10,142 | $0.81 | $8.3K | 151.7K | Form 4 ↗ |
Hemrajani Rekha director | Jun 25, 2025 | Sale | 10,684 | $2.09 | $22.4K | 39.9K | Form 4 ↗ |
Swirsky Douglas J CHIEF FINANCIAL OFFICER | Aug 13, 2025 | Purchase | 50,000 | $1.29 | $64.5K | 161.8K | Form 4 ↗ |
Masoud Maher President and CEO | Aug 13, 2025 | Purchase | 75,000 | $1.37 | $102.9K | 175.0K | Form 4 ↗ |
Erck Stanley C director | Aug 13, 2025 | Purchase | 100,000 | $1.37 | $137.2K | 398.3K | Form 4 ↗ |
DOUGLAS RICHARD director | Aug 13, 2025 | Purchase | 80,000 | $1.39 | $111.0K | 230.6K | 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
MaxCyte, Inc. (MXCT) is primarily owned by institutional investors, who hold approximately 65.4% of total shares outstanding. Company insiders own approximately 8.83%, while retail and public investors account for the remaining 25.75%.
The largest institutional shareholder of MaxCyte, Inc. is BLACKROCK, INC., holding approximately 9.98 million shares — equal to 9.38% of outstanding shares — as of September 30, 2025.
A total of 112 institutional investors currently hold MXCT stock, with a combined institutional value of approximately $110,774,737 as of the most recent 13F filing period.
Frequently asked questions
MXCT ownershipMaxCyte, Inc. (MXCT) is primarily owned by institutional investors, who hold approximately 65.4% of shares. The largest shareholder is BLACKROCK, INC. with a 9.38% stake. Company insiders hold 8.83%. Data sourced from SEC Form 13F as of September 30, 2025.