Ardmore Shipping Corporation
Ardmore Shipping Corporation (ASC) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ASC · as of Sep 30, 2025
Ownership Breakdown
172
Institutional Holders
▼ 6 vs Q2
$328.07M
Total Inst. Value
▲ $64.88M vs Q2
40.80M
Shares Outstanding
freeFloat 84.63%
27.65M
13F Shares Held
▼ 1.95M 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
ASC largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLACKROCK, INC. deep sea foreign transportation of freight | 2.53M | 6.23% | 6.23% | $30.06B | Nov 12, 2025 | ▲ 357.0K |
DIMENSIONAL FUND ADVISORS LP deep sea foreign transportation of freight | 2.41M | 5.93% | 5.93% | $28.59B | Nov 12, 2025 | ▼ 11.4K |
AMERICAN CENTURY COMPANIES INC deep sea foreign transportation of freight | 1.75M | 4.30% | 4.30% | $20.76B | Nov 12, 2025 | ▲ 106.5K |
RENAISSANCE TECHNOLOGIES LLC deep sea foreign transportation of freight | 1.50M | 3.70% | 3.70% | $17.85B | Nov 13, 2025 | ▼ 26.9K |
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP deep sea foreign transportation of freight | 1.49M | 3.67% | 3.67% | $17.72B | Nov 13, 2025 | ▼ 3.8K |
WELLINGTON MANAGEMENT GROUP LLP deep sea foreign transportation of freight | 1.30M | 3.20% | 3.20% | $15.41B | Nov 14, 2025 | ▲ 16.5K |
PRIVATE MANAGEMENT GROUP INC deep sea foreign transportation of freight | 1.24M | 3.05% | 3.05% | $14.70B | Nov 13, 2025 | ▼ 4.1K |
ARISTOTLE CAPITAL BOSTON, LLC deep sea foreign transportation of freight | 1.12M | 2.75% | 2.75% | $13.25B | Nov 14, 2025 | ▼ 15.9K |
RBF CAPITAL, LLC deep sea foreign transportation of freight | 901.9K | 2.22% | 2.22% | $10.71B | Nov 14, 2025 | — held |
MORGAN STANLEY deep sea foreign transportation of freight | 775.1K | 1.91% | 1.91% | $9.20B | May 27, 2026 | ▲ 210.2K |
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
22
Increased
+2.46M shares2
New Positions
first time holders24
Decreased
−1.04M shares0
Sold Out
fully exitedNet shares change (top 50)
+1.42M
+2.46M / −1.04M
Net new holders
+0
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
ASC 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.
0
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 |
|---|---|---|---|---|---|---|---|
de Jong Helen Johanna director | May 15, 2026 | Sale | 1,534 | $18.93 | $29.0K | 24.8K | Form 4 ↗ |
McWilliams Curtis B director | May 15, 2026 | Sale | 848 | $19.01 | $16.1K | 77.0K | Form 4 ↗ |
McWilliams Curtis B director | May 18, 2026 | Sale | 16,277 | $19.38 | $315.4K | 60.7K | Form 4 ↗ |
de Jong Helen Johanna director | May 12, 2026 | Sale | 1,966 | $19.02 | $37.4K | 26.3K | Form 4 ↗ |
McWilliams Curtis B director | May 12, 2026 | Sale | 2,572 | $19.05 | $49.0K | 78.1K | Form 4 ↗ |
McWilliams Curtis B director | May 13, 2026 | Sale | 303 | $19.02 | $5.8K | 77.8K | Form 4 ↗ |
Tikka Kirsi director | May 12, 2026 | Sale | 12,000 | $18.93 | $227.2K | 35.5K | Form 4 ↗ |
O'Driscoll Aideen Siobhan SVP & Sr. Dir. of Corp. Svcs | May 12, 2026 | Sale | 15,848 | $18.96 | $300.5K | 19.6K | Form 4 ↗ |
Kelleher Bart B President | May 5, 2026 | Sale | 8,000 | $19.07 | $152.6K | 60.0K | 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
Ardmore Shipping Corporation (ASC) is primarily owned by institutional investors, who hold approximately 67.8% of total shares outstanding. Company insiders own approximately 15.37%, while retail and public investors account for the remaining 16.87%.
The largest institutional shareholder of Ardmore Shipping Corporation is BLACKROCK, INC., holding approximately 2.53 million shares — equal to 6.23% of outstanding shares — as of September 30, 2025.
A total of 172 institutional investors currently hold ASC stock, with a combined institutional value of approximately $328,067,516 as of the most recent 13F filing period.
Frequently asked questions
ASC ownershipArdmore Shipping Corporation (ASC) is primarily owned by institutional investors, who hold approximately 67.8% of shares. The largest shareholder is BLACKROCK, INC. with a 6.23% stake. Company insiders hold 15.37%. Data sourced from SEC Form 13F as of September 30, 2025.