Acutus Medical, Inc.
Acutus Medical, Inc. (AFIB) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · AFIB · as of Jun 30, 2025
Ownership Breakdown
1
Institutional Holders
$4
Total Inst. Value
▼ $81 vs Q1
29.91M
Shares Outstanding
freeFloat 67.27%
2,000
13F Shares Held
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
AFIB largest shareholders · institutional ownership
Q2 2025 · SEC 13F
Showing top 1 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
S.A. MASON LLC surgical & medical instruments & apparatus | 2.0K | 0.67% | 0.67% | $4,000 | Jul 14, 2025 | — held |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q2 2025 vs prior quarter
Q2 2025
0
Increased
+0 shares0
New Positions
first time holders0
Decreased
−0 shares0
Sold Out
fully exitedNet shares change (top 50)
+0
+0 / −0
Net new holders
+0
0 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
AFIB insider trading · insider activity
Source: SEC Form 4
0
Buy transactions
3
Sell transactions
0.00
Buy/Sell ratio
$2M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Flynn James E Director by deputization | Jan 27, 2025 | D-Return | 1,889,509 | $1.11 | $2.10M | 0 | Form 4 ↗ |
Flynn James E Director by deputization | Jan 27, 2025 | D-Return | 31,116 | $0.10 | $3.0K | 0 | Form 4 ↗ |
Flynn James E Director by deputization | Jan 27, 2025 | D-Return | 209,996 | $16.67 | $3.50M | 0 | Form 4 ↗ |
Mukai Takeo CFO | Mar 1, 2024 | Tax Withhold | 8,475 | $0.21 | $1.8K | 72.9K | Form 4 ↗ |
Sohn Tom SVP, Gen. Counsel & Secretary | Feb 6, 2024 | Tax Withhold | 7,582 | $0.17 | $1.3K | 105.0K | Form 4 ↗ |
Mukai Takeo CFO | Feb 1, 2024 | Tax Withhold | 2,869 | $0.19 | $547.979 | 81.3K | Form 4 ↗ |
Sohn Tom SVP, Gen. Counsel & Secretary | Feb 1, 2024 | Tax Withhold | 5,709 | $0.19 | $1.1K | 112.6K | Form 4 ↗ |
Mathews Kevin SVP, Commercial | Jan 7, 2024 | Tax Withhold | 6,342 | $0.19 | $1.2K | 61.1K | Form 4 ↗ |
Roman David President & CEO | Jan 7, 2024 | Tax Withhold | 24,086 | $0.19 | $4.6K | 332.1K | Form 4 ↗ |
Mukai Takeo CFO | Sep 1, 2023 | Tax Withhold | 1,729 | $0.49 | $843.752 | 84.2K | 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
Acutus Medical, Inc. (AFIB) is primarily owned by institutional investors, who hold approximately 0.0% of total shares outstanding. Company insiders own approximately 32.73%, while retail and public investors account for the remaining 67.27%.
The largest institutional shareholder of Acutus Medical, Inc. is S.A. MASON LLC, holding approximately 2,000 shares — equal to 0.67% of outstanding shares — as of June 30, 2025.
A total of 1 institutional investors currently hold AFIB stock, with a combined institutional value of approximately $4 as of the most recent 13F filing period.
Frequently asked questions
AFIB ownershipAcutus Medical, Inc. (AFIB) is primarily owned by institutional investors, who hold approximately 0.0% of shares. The largest shareholder is S.A. MASON LLC with a 0.67% stake. Company insiders hold 32.73%. Data sourced from SEC Form 13F as of June 30, 2025.