Latest Period
Q4 2025
Security Snapshot
LB PHARMACEUTICALS INC - Common Stock, $0.0001 par value per share (LBRX) Institutional Ownership
CUSIP: 50180M108
13F Institutional Holders and Ownership History from Q3 2025 to Q1 2026
Institutions Reporting
67
Shares (Excl. Options)
24,789,567
Price
$22.26
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- Type / Class
- Equity / Common Stock, $0.0001 par value per share
- Symbol
- LBRX on Nasdaq
- Shares outstanding
- 25,386,253
- Price per share
- $24.34
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 24,789,567
- Total reported value
- $551,818,582
- % of total 13F portfolios
- 0%
- Share change
- +2,487,043
- Value change
- +$64,572,138
- Number of holders
- 67
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- LBRX - LB PHARMACEUTICALS INC - Common Stock, $0.0001 par value per share is tracked under CUSIP 50180M108.
- 67 institutions reported positions in Q4 2025.
- 9 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 67 to 7 between Q4 2025 and Q1 2026.
- Reported value moved from $551,818,582 to $1,227,699.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 67 institutions filings for Q4 2025.
Investment Quick Answers
What is CUSIP 50180M108?
CUSIP 50180M108 identifies LBRX - LB PHARMACEUTICALS INC - Common Stock, $0.0001 par value per share in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 50180M108:
Significant Owners of LB PHARMACEUTICALS INC - Common Stock, $0.0001 par value per share (LBRX) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Deep Track Capital, LP | 15% | 3,352,804 | Deep Track Capital, LP | 12 Sep 2025 | ||||
| RA CAPITAL MANAGEMENT, L.P. | 8.7% | +15% | $42,029,734 | +$10,154,484 | 2,208,604 | +32% | RA Capital Management, L.P. | 31 Dec 2025 |
| TCG Crossover GP II, LLC | 7.8% | 1,745,015 | TCG Crossover GP II, LLC | 12 Sep 2025 | ||||
| JPMORGAN CHASE & CO | 6.3% | $35,864,660 | 1,611,482 | JPMORGAN CHASE & CO. | 31 Dec 2025 | |||
| Pontifax Management 4 G.P. (2015) Ltd. | 6.3% | 1,411,681 | Pontifax Management 4 G.P. (2015) Ltd. | 12 Sep 2025 | ||||
| BlackRock, Inc. | 5.1% | $28,437,799 | 1,277,776 | BlackRock, Inc. | 31 Dec 2025 | |||
| Trails Edge Capital Partners, LP | 5% | $20,964,420 | 1,268,265 | Trails Edge Capital Partners, LP | 24 Dec 2025 | |||
| Commodore Capital LP | 5.5% | 1,225,000 | Commodore Capital LP | 11 Sep 2025 | ||||
| BlackRock Portfolio Management LLC | 3.8% | -35% | $21,391,244 | -$308,063 | 961,158 | -1.4% | BlackRock Portfolio Management LLC | 31 Dec 2025 |
As of 31 Dec 2025, 67 institutional investors reported holding 24,789,567 shares of LB PHARMACEUTICALS INC - Common Stock, $0.0001 par value per share (LBRX). This represents 98% of the company’s total 25,386,253 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of LB PHARMACEUTICALS INC - Common Stock, $0.0001 par value per share (LBRX) together control 94% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Deep Track Capital, LP | 13% | 3,352,804 | 0% | 1.7% | $74,633,417 |
| BlackRock, Inc. | 8.8% | 2,238,934 | +130% | 0% | $49,838,671 |
| RA CAPITAL MANAGEMENT, L.P. | 8.7% | 2,208,604 | +24% | 0.51% | $49,163,525 |
| TCG Crossover Management, LLC | 6.9% | 1,745,015 | -0% | 1.3% | $38,844,034 |
| JPMORGAN CHASE & CO | 6.3% | 1,611,482 | +56% | 0% | $35,871,589 |
| Commodore Capital LP | 5.9% | 1,500,000 | 0% | 2.2% | $33,390,000 |
| Trails Edge Capital Partners, LP | 5.5% | 1,395,608 | 0% | 7.7% | $31,066,234 |
| Logos Global Management LP | 4.7% | 1,200,000 | +6.2% | 1.8% | $26,712,000 |
| VANGUARD GROUP INC | 4.4% | 1,112,978 | 0% | $24,774,891 | |
| Spruce Street Capital LP | 4% | 1,005,593 | 0% | 7.4% | $22,384,500 |
| Balyasny Asset Management L.P. | 3.5% | 896,806 | -7.4% | 0.04% | $19,962,902 |
| JENNISON ASSOCIATES LLC | 3.2% | 821,852 | +11% | 0.01% | $18,294,425 |
| Vivo Capital, LLC | 3.2% | 800,000 | 0% | 1.2% | $17,808,000 |
| Nantahala Capital Management, LLC | 2.7% | 675,000 | 0% | 0.9% | $15,025,500 |
| Alyeska Investment Group, L.P. | 2.7% | 675,000 | 0% | 0.04% | $15,025,500 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.7% | 441,454 | +3148% | 0% | $9,829,858 |
| CITADEL ADVISORS LLC | 1.6% | 407,668 | -24% | 0.01% | $9,074,690 |
| GOLDMAN SACHS GROUP INC | 1.2% | 303,115 | -12% | 0% | $6,747,340 |
| Nan Fung Group Holdings Ltd | 1.2% | 300,000 | 0% | 6% | $6,678,000 |
| STATE STREET CORP | 0.98% | 250,030 | 0% | $5,565,668 | |
| FMR LLC | 0.87% | 221,865 | -40% | 0% | $4,938,715 |
| BAKER BROS. ADVISORS LP | 0.79% | 200,000 | 0% | 0.03% | $4,452,000 |
| AMERIPRISE FINANCIAL INC | 0.76% | 193,544 | +150% | 0% | $4,308,289 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.7% | 177,616 | 0% | $3,953,732 | |
| NORTHERN TRUST CORP | 0.57% | 143,966 | 0% | $3,204,684 |