Comparable stake leader
Janus Henderson Group Ltd.
SEC ownership of Immix Biopharma, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001873835.
Disclosed value leader
Jupiter Topco LLC
Comparable rows
50/50
Latest evidence
30 Jun 2026
- Public ticker
- IMMX on Nasdaq
- Parsed ownership sources
-
13D/G and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Janus Henderson Group Ltd.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Janus Henderson Group Ltd.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
30 Jun 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001873835
- Issuer location
- Los Angeles, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Immix Biopharma, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Janus Henderson Group Ltd.
Disclosed value leader
Jupiter Topco LLC
Comparable rows
50/50
Latest evidence
30 Jun 2026
13D/G
13F
Lead comparable stake: 14%
13D/G row: Janus Henderson Group Ltd.
Showing 1-8 of 50 holder rows.
Quick read
Janus Henderson Group Ltd. leads the comparable SEC ownership view at 14%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Janus Henderson Group Ltd.'s linked filing trail.
Comparable ownership
Top 5
Janus Henderson Group Ltd.
14%
Saturn V Capital Management LP
7%
EVENTIDE ASSET MANAGEMENT, LLC
5.6%
MILLENNIUM MANAGEMENT LLC
3.3%
Jupiter Topco LLC
14%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Janus Henderson Group Ltd. |
13D/G
|
14%
|
$96,168,777
9,783,192 shares
|
+$6,806,882 | 30 Jun 2026 |
| Saturn V Capital Management LP |
13F
13D/G
Company
|
7%
from 13D/G
|
$48,028,403
4,658,429 shares
|
— | 30 Jun 2026 |
| EVENTIDE ASSET MANAGEMENT, LLC |
13F
13D/G
Company
|
5.6%
from 13D/G
|
$40,116,406
3,891,019 shares
|
— | 30 Jun 2026 |
| MILLENNIUM MANAGEMENT LLC |
13F
13D/G
Company
|
3.3%
from 13D/G
|
$21,304,852
2,066,426 shares
|
— | 30 Jun 2026 |
| Jupiter Topco LLC |
13F
Company
|
14%
|
$100,815,794
9,783,192 shares
|
— | 30 Jun 2026 |
| STATE STREET CORP |
13F
Company
|
4.3%
|
$30,898,400
2,996,935 shares
|
— | 30 Jun 2026 |
| BlackRock, Inc. |
13F
Company
|
4.3%
|
$30,826,610
2,989,972 shares
|
— | 30 Jun 2026 |
| Deep Track Capital, LP |
13F
Company
|
4%
|
$28,610,250
2,775,000 shares
|
— | 30 Jun 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to buying over the last 12 months. Net value: +$10,172.
Buys
$10,172
Insiders: 2
Sells
$0
Insiders: 0
Net
+$10,172
Shares: +5,100
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 5,100
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 5,100 | 0 | $10,172 | $0 | +$10,172 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-12 of 12 reporting-owner rows connected to Immix Biopharma, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
12
Largest Forms 3/4/5 holder
Yekaterina Chudnovsky
Net 12M change
+$10,172
Latest report
22 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Yekaterina Chudnovsky | Director | $29,583,139 | Mixed | 22 May 2026 | ||
| Carey Ng | Director | $9,578,900 | Mixed | 22 May 2026 | ||
| Jason Hsu | Director | $8,647,667 | Mixed | 22 May 2026 | ||
| Chang Nancy T. | Director | $8,427,933 | Mixed | 22 May 2026 | ||
| Vladimir P. Torchilin | Scientific Co-Founder | $4,230,905 | Mixed | 20 Dec 2021 | ||
| Sean Senn | Under 10% owner | $4,205,665 | Mixed | 14 Jul 2022 | ||
| Ilya M. Rachman | CEO and Chairman, Director | $2,854,207 | +$5,050 | +0.18% | Mixed | 22 May 2026 |
| Helen C. Adams | Director | $1,648,946 | Mixed | 22 May 2026 | ||
| Gabriel S. Morris | CFO, President, Director | $1,070,047 | +$5,122 | +0.48% | Mixed | 22 May 2026 |
| Magda Marquet | Director | $698,835 | Mixed | 22 May 2026 | ||
| Jane Buchan | Director | $261,502 | Mixed | 22 May 2026 | ||
| Graham Ross | CMO & Head of Clinical Dev. | Mixed | 15 Dec 2021 |
Recent insider transactions for Immix Biopharma, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Helen C. Adams | IMMX | Common Stock | Award | 3.58% | 6,250 | 181,004 | 22 May 2026 | Direct | ||
| Helen C. Adams | IMMX | Stock Option (Right to Buy) | Award | 12,500 | 12,500 | 22 May 2026 | Direct | |||
| Carey Ng | IMMX | Common Stock | Award | 31.2% | 6,250 | 26,250 | 22 May 2026 | Direct | ||
| Carey Ng | IMMX | Stock Option (Right to Buy) | Award | 12,500 | 12,500 | 22 May 2026 | Direct | |||
| Magda Marquet | IMMX | Common Stock | Award | 13.6% | 6,250 | 52,342 | 22 May 2026 | Direct | ||
| Magda Marquet | IMMX | Stock Option (Right to Buy) | Award | 12,500 | 12,500 | 22 May 2026 | Direct | |||
| Gabriel S. Morris | IMMX | Stock Option (Right to Buy) | Award | 500,000 | 500,000 | 22 May 2026 | Direct | |||
| Nancy T. Chang | IMMX | Common Stock | Award | 1.48% | 6,250 | 428,190 | 22 May 2026 | Direct | ||
| Nancy T. Chang | IMMX | Stock Option (Right to Buy) | Award | 12,500 | 12,500 | 22 May 2026 | Direct | |||
| Ilya M. Rachman | IMMX | Stock Option (Right to Buy) | Award | 500,000 | 500,000 | 22 May 2026 | Direct | |||
| Yekaterina Chudnovsky | IMMX | Common Stock | Award | 6,250 | 6,250 | 22 May 2026 | Direct | |||
| Yekaterina Chudnovsky | IMMX | Stock Option (Right to Buy) | Award | 12,500 | 12,500 | 22 May 2026 | Direct | |||
| Jason Hsu | IMMX | Common Stock | Award | 0.7% | 6,250 | 899,250 | 22 May 2026 | Direct | ||
| Jason Hsu | IMMX | Stock Option (Right to Buy) | Award | 12,500 | 12,500 | 22 May 2026 | Direct | |||
| Jane Buchan | IMMX | Common Stock | Award | 27.8% | 6,250 | 28,705 | 22 May 2026 | Direct | ||
| Jane Buchan | IMMX | Stock Option (Right to Buy) | Award | 12,500 | 12,500 | 22 May 2026 | Direct | |||
| Ilya M. Rachman | IMMX | Common Stock | Purchase | 0.07% | 746 | 1,141,683 | 10 Dec 2025 | Direct | ||
| Gabriel S. Morris | IMMX | Common Stock | Purchase | 0.26% | 770 | 291,429 | 10 Dec 2025 | Direct | ||
| Gabriel S. Morris | IMMX | Common Stock | Exercise of in-the-money or at-the-money derivative security | 57.6% | 156,000 | 426,844 | 08 Dec 2025 | See footnote | ||
| Gabriel S. Morris | IMMX | Warrants (right to purchase) | Exercise of in-the-money or at-the-money derivative security | -100% | -156,000 | 0 | 08 Dec 2025 | See footnote | ||
| Dr. Nancy T. Chang | IMMX | Stock Option (Right to Buy) | Award | 39,643 | 39,643 | 21 Nov 2025 | Direct | |||
| Ilya M. Rachman | IMMX | Common Stock | Purchase | 0.22% | $5,050 | $2.02 | 2,500 | 1,140,937 | 17 Sep 2025 | Direct |
| Gabriel S. Morris | IMMX | Common Stock | Purchase | 0.9% | $5,122 | $1.97 | 2,600 | 290,659 | 16 Sep 2025 | Direct |
* marks a reported price that did not pass the local price check.