American Coastal Insurance Corporation
American Coastal Insurance Corporation (ACIC) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ACIC · as of Sep 30, 2025
Ownership Breakdown
133
Institutional Holders
▲ 5 vs Q2
$175.78M
Total Inst. Value
▲ $9.57M vs Q2
48.46M
Shares Outstanding
freeFloat 50.37%
15.39M
13F Shares Held
▲ 493,054 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
ACIC largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. aircraft | 1.80M | 3.69% | 3.69% | $20.45B | Nov 12, 2025 | ▼ 12.7K |
VANGUARD GROUP INC aircraft | 1.29M | 2.66% | 2.66% | $14.74B | Nov 7, 2025 | ▼ 64.2K |
TIETON CAPITAL MANAGEMENT, LLC aircraft | 1.22M | 2.52% | 2.52% | $13.95B | Nov 12, 2025 | ▲ 33.0K |
DG CAPITAL MANAGEMENT, LLC aircraft | 982.2K | 2.02% | 2.02% | $11.19B | Nov 14, 2025 | ▲ 81.7K |
EMPYREAN CAPITAL PARTNERS, LP aircraft | 940.5K | 1.93% | 1.93% | $10.71B | Nov 14, 2025 | — held |
PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. aircraft | 723.9K | 1.49% | 1.49% | $8.25B | Nov 14, 2025 | ▲ 127.6K |
GEODE CAPITAL MANAGEMENT, LLC aircraft | 607.0K | 1.25% | 1.25% | $6.92B | Nov 12, 2025 | ▲ 907 |
AMERICAN CENTURY COMPANIES INC aircraft | 596.5K | 1.23% | 1.23% | $6.79B | Nov 12, 2025 | ▲ 47.5K |
DIMENSIONAL FUND ADVISORS LP aircraft | 551.9K | 1.13% | 1.13% | $6.29B | Nov 12, 2025 | ▲ 75.4K |
STATE STREET CORP aircraft | 496.4K | 1.02% | 1.02% | $5.65B | Nov 14, 2025 | ▲ 6.4K |
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
24
Increased
+1.21M shares4
New Positions
first time holders18
Decreased
−520.8K shares0
Sold Out
fully exitedNet shares change (top 50)
+684.3K
+1.21M / −520.8K
Net new holders
+10
4 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
ACIC insider trading · insider activity
Source: SEC Form 4
40
Buy transactions
81
Sell transactions
0.49
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 |
|---|---|---|---|---|---|---|---|
Brown Deirdre A director | May 26, 2026 | Award | 5,000 | — | — | 6.5K | Form 4 ↗ |
Peed Daniel
| May 26, 2026 | Award | 5,000 | — | — | 1.99M | Form 4 ↗ |
Whittemore Kent G director | May 26, 2026 | Award | 5,000 | — | — | 374.3K | Form 4 ↗ |
POITEVINT ALEC II director | May 26, 2026 | Award | 5,000 | — | — | 195.0K | Form 4 ↗ |
Maroney Patrick director | May 26, 2026 | Award | 5,000 | — | — | 103.5K | Form 4 ↗ |
HOOD III WILLIAM H. director | May 26, 2026 | Award | 5,000 | — | — | 65.4K | Form 4 ↗ |
Hogan Michael director | May 26, 2026 | Award | 5,000 | — | — | 366.8K | Form 4 ↗ |
DAVIS KERN MICHAEL director | May 26, 2026 | Award | 5,000 | — | — | 304.6K | Form 4 ↗ |
Branch Gregory C director | May 26, 2026 | Award | 5,000 | — | — | 1.73M | Form 4 ↗ |
MARTZ BRAD President & CEO | May 12, 2026 | Award | 34,298 | $10.59 | $363.2K | 483.3K | 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
American Coastal Insurance Corporation (ACIC) is primarily owned by institutional investors, who hold approximately 31.8% of total shares outstanding. Company insiders own approximately 49.63%, while retail and public investors account for the remaining 18.62%.
The largest institutional shareholder of American Coastal Insurance Corporation is BLACKROCK, INC., holding approximately 1.80 million shares — equal to 3.69% of outstanding shares — as of September 30, 2025.
A total of 133 institutional investors currently hold ACIC stock, with a combined institutional value of approximately $175,777,647 as of the most recent 13F filing period.
Frequently asked questions
ACIC ownershipAmerican Coastal Insurance Corporation (ACIC) is primarily owned by institutional investors, who hold approximately 31.8% of shares. The largest shareholder is BLACKROCK, INC. with a 3.69% stake. Company insiders hold 49.63%. Data sourced from SEC Form 13F as of September 30, 2025.