Immix Biopharma, Inc.
Immix Biopharma, Inc. (IMMX) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · IMMX · as of Sep 30, 2025
Ownership Breakdown
32
Institutional Holders
▲ 9 vs Q2
$5.80M
Total Inst. Value
▲ $1.12M vs Q2
54.41M
Shares Outstanding
freeFloat 74.13%
2.78M
13F Shares Held
▲ 513,700 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
IMMX largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
BLEICHROEDER LP pharmaceutical preparations | 850.0K | 2.83% | 2.83% | $1.78B | Nov 14, 2025 | — held |
VANGUARD GROUP INC pharmaceutical preparations | 730.2K | 2.44% | 2.44% | $1.53B | Nov 7, 2025 | ▲ 31.6K |
GEODE CAPITAL MANAGEMENT, LLC pharmaceutical preparations | 187.5K | 62.53% | 62.53% | $391.87M | Nov 12, 2025 | ▲ 26.4K |
MORGAN STANLEY pharmaceutical preparations | 120.7K | 40.25% | 40.25% | $252.20M | May 27, 2026 | ▼ 4.2K |
STATE STREET CORP pharmaceutical preparations | 99.0K | 33.00% | 33.00% | $206.83M | Nov 14, 2025 | ▲ 56.0K |
SUSQUEHANNA INTERNATIONAL GROUP, LLP pharmaceutical preparations | 90.9K | 30.30% | 30.30% | $189.89M | Nov 14, 2025 | ▲ 40.0K |
CITADEL ADVISORS LLC pharmaceutical preparations | 89.8K | 29.95% | 29.95% | $187.68M | Nov 14, 2025 | NEW |
NORTHERN TRUST CORP pharmaceutical preparations | 89.3K | 29.78% | 29.78% | $186.64M | Nov 14, 2025 | ▼ 4.6K |
UNITED CAPITAL FINANCIAL ADVISERS, LLC pharmaceutical preparations | 70.7K | 23.57% | 23.57% | $147.72M | Nov 14, 2025 | NEW |
IMPRINT WEALTH LLC pharmaceutical preparations | 67.4K | 22.49% | 22.49% | $140.91M | Nov 14, 2025 | NEW |
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
8
Increased
+212.9K shares12
New Positions
first time holders4
Decreased
−21.0K shares4
Sold Out
fully exitedNet shares change (top 50)
+191.9K
+212.9K / −21.0K
Net new holders
+12
12 new / 4 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
IMMX 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
1
Sell transactions
4.00
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 |
|---|---|---|---|---|---|---|---|
Adams Helen C. director | May 22, 2026 | Award | 6,250 | — | — | 181.0K | Form 4 ↗ |
Adams Helen C. director | May 22, 2026 | Award | 12,500 | $8.78 | $109.7K | 12.5K | Form 4 ↗ |
Ng Carey director | May 22, 2026 | Award | 6,250 | — | — | 26.3K | Form 4 ↗ |
Ng Carey director | May 22, 2026 | Award | 12,500 | $8.78 | $109.7K | 12.5K | Form 4 ↗ |
Marquet Magda director | May 22, 2026 | Award | 6,250 | — | — | 52.3K | Form 4 ↗ |
Marquet Magda director | May 22, 2026 | Award | 12,500 | $8.78 | $109.7K | 12.5K | Form 4 ↗ |
Morris Gabriel S CFO, President | May 22, 2026 | Award | 500,000 | $8.78 | $4.39M | 500.0K | Form 4 ↗ |
CHANG NANCY T director | May 22, 2026 | Award | 6,250 | — | — | 428.2K | Form 4 ↗ |
CHANG NANCY T director | May 22, 2026 | Award | 12,500 | $8.78 | $109.7K | 12.5K | Form 4 ↗ |
Rachman Ilya M CEO and Chairman | May 22, 2026 | Award | 500,000 | $8.78 | $4.39M | 500.0K | 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
Immix Biopharma, Inc. (IMMX) is primarily owned by institutional investors, who hold approximately 5.1% of total shares outstanding. Company insiders own approximately 25.87%, while retail and public investors account for the remaining 69.03%.
The largest institutional shareholder of Immix Biopharma, Inc. is BLEICHROEDER LP, holding approximately 850,000 shares — equal to 2.83% of outstanding shares — as of September 30, 2025.
A total of 32 institutional investors currently hold IMMX stock, with a combined institutional value of approximately $5,802,209 as of the most recent 13F filing period.
Frequently asked questions
IMMX ownershipImmix Biopharma, Inc. (IMMX) is primarily owned by institutional investors, who hold approximately 5.1% of shares. The largest shareholder is BLEICHROEDER LP with a 2.83% stake. Company insiders hold 25.87%. Data sourced from SEC Form 13F as of September 30, 2025.