LBRXNasdaqPharmaceutical PreparationsFiscal year ends December 31
LB PHARMACEUTICALS INC
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 11, 2026
$38.81+2.07 (+5.63%)
Close on Oct 19, 2026
- Market cap
- $1.17B
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
95.5%
31M of 32M shares
Institutional holders
115
43 new, 3 sold out
Net institutional buying
3M
In Q2 2026
Insider trades, 12 months
0 buys · 0 sales
Open-market trades only
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| David Kroin | 3,352,804 | 11.70% | 13D (active) amendment | Feb 6, 2025 |
| Rajeev Shah | 2,208,604 | 8.70% | 13G (passive) amendment | Dec 31, 2025 |
| Robert Egen Atkinson | 1,972,369 | 6.80% | 13G (passive) amendment | Mar 31, 2026 |
| TCG Crossover GP II, LLC | 1,839,489 | 6.40% | 13G (passive) amendment | Mar 31, 2026 |
| BlackRock, Inc. | 1,796,543 | 6.30% | 13G (passive) amendment | Jun 30, 2026 |
| RA Capital Management, L.P. | 1,675,000 | 7.50% | 13G (passive) | Sep 12, 2025 |
| JPMorgan Chase & Co | 1,497,293 | 5.20% | 13G (passive) | Jun 30, 2026 |
| Chen Yu | 1,447,310 | 5.00% | 13G (passive) amendment | Jun 30, 2026 |
| Johnson David Edward | 1,438,070 | 5.00% | 13G (passive) | Mar 31, 2026 |
| Tomer Kariv | 1,411,681 | 6.30% | 13D (active) | Sep 12, 2025 |
| Trails Edge Capital Partners, LP | 1,268,265 | 5.00% | 13G (passive) | Dec 24, 2025 |
| Commodore Capital Master LP | 1,225,000 | 5.50% | 13G (passive) | Sep 11, 2025 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of LBRX | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Deep Track Capital, LP | 3,352,804 | 10.39% | $108.82M | – | 1.58% |
| BlackRock, Inc. | 2,734,305 | 8.48% | $88.74M | +263,460 | 0.00% |
| Ra Capital Management, L.P. | 2,208,604 | 6.85% | $71.68M | – | 0.62% |
| Nantahala Capital Management, LLC | 2,105,788 | 6.53% | $68.34M | +1,052,894 | 1.14% |
| Trails Edge Capital Partners, LP | 1,523,022 | 4.72% | $49.43M | +203,660 | 7.85% |
| Commodore Capital LP | 1,500,000 | 4.65% | $48.68M | – | 2.90% |
| JPMorgan Chase & Co | 1,497,293 | 4.64% | $48.87M | +69,725 | 0.00% |
| TCG Crossover Management, LLC | 1,447,310 | 4.49% | $46.97M | −392,179 | 1.13% |
| Caligan Partners LP | 1,438,070 | 4.46% | $46.67M | – | 2.20% |
| Spruce Street Capital LP | 1,376,159 | 4.27% | $44.66M | – | 8.76% |
| Vanguard Capital Management LLC | 971,165 | 3.01% | $31.52M | +76,512 | 0.00% |
| Balyasny Asset Management L.P. | 921,471 | 2.86% | $29.91M | −2,223 | 0.04% |
| Alyeska Investment Group, L.P. | 863,947 | 2.68% | $28.04M | – | 0.07% |
| Vivo Capital, LLC | 800,000 | 2.48% | $25.96M | – | 2.37% |
| Nan Fung Group Holdings Ltd | 630,657 | 1.95% | $20.47M | – | 15.57% |
| Geode Capital Management, LLC | 612,793 | 1.90% | $19.89M | +94,565 | 0.00% |
| State Street Corp | 602,028 | 1.87% | $19.54M | +97,655 | 0.00% |
| Logos Global Management LP | 585,000 | 1.81% | $18.99M | −330,000 | 0.82% |
| Goldman Sachs Group Inc | 576,456 | 1.79% | $18.71M | +212,657 | 0.00% |
| Jennison Associates LLC | 540,902 | 1.68% | $17.55M | +2,686 | 0.01% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 115 | 31M | 95.5% | 43 / 42 | 13 / 3 | 4M | 1M |
| Q1 2026 | 77 | 28M | 87.6% | 20 / 31 | 14 / 10 | 6M | 1M |
| Q4 2025 | 68 | 25M | 76.8% | 33 / 12 | 13 / 16 | 7M | 3M |
| Q3 2025 | 53 | 21M | 65.0% | 53 / 0 | 0 / 0 | 21M | 0M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of LBRX | Value | % of fund | As of |
|---|---|---|---|---|---|
| JPMorgan Small Cap Growth Fund | 692,905 | 2.15% | $22.49M | 0.86% | Jun 30, 2026 |
| Vanguard Total Stock Market Index Fund | 672,000 | 2.08% | $21.81M | 0.00% | Jun 30, 2026 |
| iShares Russell 2000 ETF | 581,750 | 1.80% | $18.88M | 0.02% | Jun 30, 2026 |
| BlackRock Health Sciences Opportunities Portfolio | 567,627 | 1.76% | $15.88M | 0.27% | May 29, 2026 |
| Vanguard Extended Market Index Fund | 278,887 | 0.86% | $9.05M | 0.01% | Jun 30, 2026 |
| Fidelity Small Cap Index Fund | 244,910 | 0.76% | $9.82M | 0.03% | Jul 31, 2026 |
| PGIM Jennison Health Sciences Fund | 231,150 | 0.72% | $6.47M | 0.47% | May 29, 2026 |
| JPMorgan Small Cap Blend Fund | 220,241 | 0.68% | $7.15M | 0.42% | Jun 30, 2026 |
| Select Biotechnology Portfolio | 187,731 | 0.58% | $5.25M | 0.10% | May 31, 2026 |
| Calamos Timpani Small Cap Growth Fund | 144,326 | 0.45% | $5.78M | 0.75% | Jul 31, 2026 |
| Fidelity Extended Market Index Fund | 126,232 | 0.39% | $3.53M | 0.01% | May 31, 2026 |
| Schwab U.S. Small-Cap ETF | 115,659 | 0.36% | $3.23M | 0.01% | May 31, 2026 |
| Multi-Manager Small Cap Equity Strategies Fund | 109,819 | 0.34% | $3.07M | 0.24% | May 31, 2026 |
| iShares Russell 2000 Value ETF | 107,475 | 0.33% | $3.49M | 0.02% | Jun 30, 2026 |
| State Street(R) SPDR(R) S&P(R) Pharmaceuticals ETF | 105,171 | 0.33% | $3.41M | 0.80% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Heather D. Turner | Chief Executive Officer, Director | – | – | Sep 12, 2025 |
| Susan Gani Kozauer | Chief Medical Officer | – | – | Sep 24, 2026 |
| Joseph M. Miller | Chief Financial Officer | – | – | Sep 14, 2026 |
| Panandiker Kaya Kamlesh Pai | Chief Commercial Officer | – | – | Dec 11, 2025 |
| Marc L. Panoff | Senior Vice President, Finance | 10,242 | 0.03% | Sep 29, 2025 |
| Gad Soffer | Chief Business Officer | – | – | Sep 12, 2025 |
| Anna Eramo | Chief Medical Officer | 3,585 | 0.01% | Sep 12, 2025 |
| Richard Anthony Silva | SVP, Technical Operations | – | – | Sep 12, 2025 |
| Robert R. Ruffolo | Director | 2,365 | 0.01% | Jun 5, 2026 |
| Rekha Hemrajani | Director | – | – | Jun 5, 2026 |
| William P. Kane Jr | Director | – | – | Jun 5, 2026 |
| Ran Nussbaum | Director | 1,411,681 | 4.38% | Jun 5, 2026 |
| Rebecca Luse | Director | – | – | Jun 5, 2026 |
| Robert A. Lenz | Director | – | – | Jun 5, 2026 |
| J. Scott Garland | Director | – | – | Jun 5, 2026 |
| Zachary Prensky | Director | 61,274 | 0.19% | Sep 12, 2025 |
| David Kroin | 10% owner | – | – | Aug 3, 2026 |
| Deep Track Biotechnology Master Fund, Ltd. | 10% owner | – | – | Aug 3, 2026 |
| Deep Track Capital, LP | 10% owner | 3,352,804 | 10.39% | Aug 3, 2026 |
| Deep Track Special Opportunities Fund, LP | 10% owner | 666,666 | 2.07% | Feb 10, 2026 |
| Vida Ventures GP III, L.L.C. | 10% owner | 550,344 | 1.71% | Sep 16, 2025 |
| Arie Belldegrun | 10% owner | 1,434 | 0.00% | Sep 16, 2025 |
| Management 4 G.P. (2015) Ltd. Pontifax | 10% owner | 1,411,681 | 4.38% | Sep 16, 2025 |
| Ventures Management Co. LLC Vida | 10% owner | – | – | Sep 16, 2025 |
| Vida Ventures III, L.P. | 10% owner | – | – | Sep 16, 2025 |
| Vida Ventures III-A, L.P. | 10% owner | – | – | Sep 16, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Ran Nussbaum Director | Sep 12, 2025 | Buy | +1,000,000 | $15.00 | $15.00M | 1,411,681 |
| Ran Nussbaum Director | Sep 12, 2025 | Conversion | +411,681 | – | – | 411,681 |
| Management 4 G.P. (2015) Ltd. Pontifax 10% owner | Sep 12, 2025 | Buy | +1,000,000 | $15.00 | $15.00M | 1,411,681 |
| Management 4 G.P. (2015) Ltd. Pontifax 10% owner | Sep 12, 2025 | Conversion | +411,681 | – | – | 411,681 |
| Vida Ventures GP III, L.L.C. 10% owner | Sep 12, 2025 | Conversion | +1,262 | – | – | 1,262 |
| Vida Ventures GP III, L.L.C. 10% owner | Sep 12, 2025 | Conversion | +547,648 | – | – | 547,648 |
| Vida Ventures GP III, L.L.C. 10% owner | Sep 12, 2025 | Buy | +767 | $15.00 | $11.51K | 2,029 |
| Vida Ventures GP III, L.L.C. 10% owner | Sep 12, 2025 | Buy | +332,566 | $15.00 | $4.99M | 880,214 |
| Deep Track Capital, LP 10% owner | Sep 12, 2025 | Buy | +666,666 | $15.00 | $10.00M | 666,666 |
| Deep Track Capital, LP 10% owner | Sep 12, 2025 | Buy | +2,000,000 | $15.00 | $30.00M | 2,686,138 |
| Deep Track Capital, LP 10% owner | Sep 12, 2025 | Conversion | +686,138 | – | – | 686,138 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Zachary Prensky Former Officer | Jun 9, 2026 | 16,500 | $486.57K | Jun 9, 2026 | Owned Shares |