Avadel Pharmaceuticals plc
Avadel Pharmaceuticals plc (AVDL) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · AVDL · as of Sep 30, 2025
Ownership Breakdown
201
Institutional Holders
▲ 23 vs Q2
$2.26B
Total Inst. Value
▲ $1.55B vs Q2
98.15M
Shares Outstanding
freeFloat 93.28%
79.34M
13F Shares Held
▼ 1.51M 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
AVDL largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
JANUS HENDERSON GROUP PLC pharmaceutical preparations | 7.43M | 7.65% | 7.65% | $113.43B | Nov 14, 2025 | ▼ 3.70M |
BLACKROCK, INC. pharmaceutical preparations | 6.97M | 7.18% | 7.18% | $106.49B | Nov 12, 2025 | ▲ 170.3K |
VANGUARD GROUP INC pharmaceutical preparations | 5.61M | 5.77% | 5.77% | $85.61B | Nov 7, 2025 | ▲ 42.0K |
BRANDES INVESTMENT PARTNERS, LP pharmaceutical preparations | 5.44M | 5.61% | 5.61% | $83.14B | Nov 14, 2025 | ▼ 1.04M |
TWO SEAS CAPITAL LP pharmaceutical preparations | 5.37M | 5.53% | 5.53% | $81.99B | Nov 14, 2025 | ▼ 786.0K |
GENDELL JEFFREY L pharmaceutical preparations | 5.31M | 5.47% | 5.47% | $81.16B | Nov 14, 2025 | ▲ 138.2K |
POLAR CAPITAL HOLDINGS PLC pharmaceutical preparations | 4.00M | 4.12% | 4.12% | $61.07B | Nov 14, 2025 | — held |
VIVO CAPITAL, LLC pharmaceutical preparations | 2.68M | 2.76% | 2.76% | $40.99B | Nov 14, 2025 | — held |
STATE STREET CORP pharmaceutical preparations | 2.29M | 2.36% | 2.36% | $35.01B | Nov 14, 2025 | ▲ 221.2K |
WEALTH EFFECTS LLC pharmaceutical preparations | 2.29M | 2.36% | 2.36% | $34.95B | Oct 28, 2025 | ▼ 66.0K |
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
25
Increased
+8.76M shares1
New Positions
first time holders15
Decreased
−7.26M shares0
Sold Out
fully exitedNet shares change (top 50)
+1.51M
+8.76M / −7.26M
Net new holders
+11
1 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
AVDL 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.
1
Buy transactions
75
Sell transactions
0.01
Buy/Sell ratio
$7M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Weiss Asset Management LP Former 10% Owner | Feb 13, 2026 | Sale | 11,112,052 | $21.00 | $233.35M | 0 | Form 4 ↗ |
Rodriguez Susan Chief Operating Officer | Feb 12, 2026 | D-Return | 300,000 | $9.59 | $2.88M | 0 | Form 4 ↗ |
Thornton Peter J. director | Feb 12, 2026 | D-Return | 42,000 | $8.07 | $338.9K | 0 | Form 4 ↗ |
Thornton Peter J. director | Feb 12, 2026 | D-Return | 42,000 | $4.79 | $201.2K | 0 | Form 4 ↗ |
Thornton Peter J. director | Feb 12, 2026 | D-Return | 11,000 | $10.83 | $119.1K | 0 | Form 4 ↗ |
Thornton Peter J. director | Feb 12, 2026 | D-Return | 42,000 | $8.48 | $356.2K | 0 | Form 4 ↗ |
Thornton Peter J. director | Feb 12, 2026 | D-Return | 115,060 | $21.00 | $2.42M | 0 | Form 4 ↗ |
Thornton Peter J. director | Feb 12, 2026 | D-Return | 60,000 | $2.03 | $121.8K | 0 | Form 4 ↗ |
Thornton Peter J. director | Feb 12, 2026 | D-Return | 33,000 | $14.10 | $465.3K | 0 | Form 4 ↗ |
Thornton Peter J. director | Feb 12, 2026 | D-Return | 11,000 | $16.32 | $179.5K | 0 | 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
Avadel Pharmaceuticals plc (AVDL) is primarily owned by institutional investors, who hold approximately 80.8% of total shares outstanding. Company insiders own approximately 6.72%, while retail and public investors account for the remaining 12.45%.
The largest institutional shareholder of Avadel Pharmaceuticals plc is JANUS HENDERSON GROUP PLC, holding approximately 7.43 million shares — equal to 7.65% of outstanding shares — as of September 30, 2025.
A total of 201 institutional investors currently hold AVDL stock, with a combined institutional value of approximately $2.26 billion as of the most recent 13F filing period.
Frequently asked questions
AVDL ownershipAvadel Pharmaceuticals plc (AVDL) is primarily owned by institutional investors, who hold approximately 80.8% of shares. The largest shareholder is JANUS HENDERSON GROUP PLC with a 7.65% stake. Company insiders hold 6.72%. Data sourced from SEC Form 13F as of September 30, 2025.