Arcturus Therapeutics Holdings Inc.
Arcturus Therapeutics Holdings Inc. (ARCT) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ARCT · as of Sep 30, 2025
Ownership Breakdown
164
Institutional Holders
▲ 9 vs Q2
$476.56M
Total Inst. Value
▲ $140.28M vs Q2
28.42M
Shares Outstanding
freeFloat 92.01%
25.86M
13F Shares Held
▲ 90,367 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
ARCT largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
FEDERATED HERMES, INC. pharmaceutical preparations | 4.69M | 17.30% | 17.30% | $86.51B | Nov 3, 2025 | — held |
BLACKROCK, INC. pharmaceutical preparations | 2.56M | 9.45% | 9.45% | $47.27B | Nov 12, 2025 | ▼ 76.6K |
SUMITOMO MITSUI TRUST HOLDINGS, INC. pharmaceutical preparations | 1.95M | 7.18% | 7.18% | $35.90B | Oct 27, 2025 | ▲ 115.4K |
NIKKO ASSET MANAGEMENT AMERICAS, INC. pharmaceutical preparations | 1.95M | 7.18% | 7.18% | $35.88B | Nov 12, 2025 | ▲ 117.6K |
VANGUARD GROUP INC pharmaceutical preparations | 1.89M | 6.95% | 6.95% | $34.75B | Nov 7, 2025 | ▲ 75.4K |
ARK INVESTMENT MANAGEMENT LLC pharmaceutical preparations | 1.87M | 6.90% | 6.90% | $34.51B | Nov 12, 2025 | ▲ 157.7K |
BALYASNY ASSET MANAGEMENT L.P. pharmaceutical preparations | 1.22M | 4.49% | 4.49% | $22.47B | Nov 14, 2025 | ▲ 1.13M |
STATE STREET CORP pharmaceutical preparations | 1.05M | 3.85% | 3.85% | $19.27B | Nov 14, 2025 | ▲ 25.9K |
BALYASNY ASSET MANAGEMENT L.P. pharmaceutical preparations | 965.0K | 3.56% | 3.56% | $17.78B | Nov 14, 2025 | ▲ 100.9K |
MORGAN STANLEY pharmaceutical preparations | 704.9K | 2.60% | 2.60% | $12.99B | May 27, 2026 | ▲ 101.3K |
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
27
Increased
+4.58M shares8
New Positions
first time holders14
Decreased
−1.71M shares0
Sold Out
fully exitedNet shares change (top 50)
+2.87M
+4.58M / −1.71M
Net new holders
+21
8 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
ARCT 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.
4
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 |
|---|---|---|---|---|---|---|---|
MULROY DENNIS Chief Financial Officer | May 1, 2026 | Award | 100,000 | $8.63 | $863.0K | 100.0K | Form 4 ↗ |
Roberts Joseph Controller | Dec 17, 2025 | Award | 10,000 | $6.52 | $65.2K | 10.0K | Form 4 ↗ |
Chivukula Pad Chief Scientific Officer & COO | Dec 17, 2025 | Award | 54,000 | $6.52 | $352.1K | 54.0K | Form 4 ↗ |
Payne Joseph E President and CEO | Dec 17, 2025 | Award | 175,000 | $6.52 | $1.14M | 175.0K | Form 4 ↗ |
Kurata Lance Chief Legal Officer | Dec 17, 2025 | Award | 54,000 | $6.52 | $352.1K | 54.0K | Form 4 ↗ |
SASSINE ANDY Chief Financial Officer | Aug 15, 2025 | Purchase | 1,238 | $16.56 | $20.5K | 221.8K | Form 4 ↗ |
SASSINE ANDY Chief Financial Officer | Aug 15, 2025 | Purchase | 1,238 | $16.56 | $20.5K | 221.8K | Form 4 ↗ |
FARRELL PETER C director | Jun 9, 2025 | Award | 15,000 | $12.54 | $188.1K | 15.0K | Form 4 ↗ |
Slaoui Moncef director | Jun 9, 2025 | Award | 15,000 | $12.54 | $188.1K | 15.0K | 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
Arcturus Therapeutics Holdings Inc. (ARCT) is primarily owned by institutional investors, who hold approximately 91.0% of total shares outstanding. Company insiders own approximately 7.99%, while retail and public investors account for the remaining 1.04%.
The largest institutional shareholder of Arcturus Therapeutics Holdings Inc. is FEDERATED HERMES, INC., holding approximately 4.69 million shares — equal to 17.30% of outstanding shares — as of September 30, 2025.
A total of 164 institutional investors currently hold ARCT stock, with a combined institutional value of approximately $476,558,185 as of the most recent 13F filing period.
Frequently asked questions
ARCT ownershipArcturus Therapeutics Holdings Inc. (ARCT) is primarily owned by institutional investors, who hold approximately 91.0% of shares. The largest shareholder is FEDERATED HERMES, INC. with a 17.30% stake. Company insiders hold 7.99%. Data sourced from SEC Form 13F as of September 30, 2025.