LBRX · Insider trading · 13F holders · Congress trades
LB Pharmaceuticals, Inc. (LBRX)
Who is buying and selling LBRX: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 16
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
LBRX at a glance
- No open-market insider purchases or sales of LBRX were filed in the last 90 days.
- 16 13F filers hold LBRX among their 50 largest positions, worth $537.2M combined, including Peter Kolchinsky. The biggest bets by portfolio weight are Nan Fung Group Holdings Ltd (15.6%), Spruce Street Capital LP (8.8%) and Trails Edge Capital Partners, LP (7.8%). In their latest 13Fs, 1 manager opened a new position and 3 added to one.
- No member of Congress has disclosed a trade in LBRX.
LBRX insider trading
No open-market insider purchases or sales of LBRX were filed in the last 90 days.
Who owns LBRX? Hedge funds and superinvestors
16 13F filers hold LBRX among their 50 largest positions, worth $537.2M combined, including Peter Kolchinsky. The biggest bets by portfolio weight are Nan Fung Group Holdings Ltd (15.6%), Spruce Street Capital LP (8.8%) and Trails Edge Capital Partners, LP (7.8%). In their latest 13Fs, 1 manager opened a new position and 3 added to one.
Superinvestors holding LBRX: Peter Kolchinsky 0.6%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Deep Track Capital, LPHedge fund | 1.6% | $108.8M | 3,352,804 | +0.0% shares | Q2 2026 |
| Peter KolchinskyHedge fund | 0.6% | $71.7M | 2,208,604 | +0.0% shares | Q2 2026 |
| Trails Edge Capital Partners, LPHedge fund | 7.8% | $49.4M | 1,523,022 | +15.4% shares | Q2 2026 |
| Commodore Capital LPHedge fund | 2.9% | $48.7M | 1,500,000 | +0.0% shares | Q2 2026 |
| TCG Crossover Management, LLCHedge fund | 1.1% | $47.0M | 1,447,310 | -21.3% shares | Q2 2026 |
| Caligan Partners LPHedge fund | 2.3% | $46.7M | 1,438,070 | +0.0% shares | Q2 2026 |
| Spruce Street Capital LPHedge fund | 8.8% | $44.7M | 1,376,159 | +0.0% shares | Q2 2026 |
| Nantahala Capital Management, LLCHedge fund | 2.1% | $34.2M | 1,052,894 | +0.0% shares | Q2 2026 |
| Vivo Capital, LLCHedge fund | 2.4% | $26.0M | 800,000 | +0.0% shares | Q2 2026 |
| Nan Fung Group Holdings LtdInvestment manager | 15.6% | $20.5M | 630,657 | +0.0% shares | Q2 2026 |
| Logos Global Management LPHedge fund | 0.8% | $19.0M | 585,000 | -36.1% shares | Q2 2026 |
| Great Point Partners LLCHedge fund | 2.4% | $10.3M | 317,221 | +5.7% shares | Q2 2026 |
| HighVista Strategies LLCHedge fund | 1.6% | $6.9M | 211,511 | +21.8% shares | Q2 2026 |
| NEXTBio Capital Management LPHedge fund | 1.0% | $2.2M | 68,249 | New | Q2 2026 |
| Acuta Capital Partners, LLCHedge fund | 0.7% | $939K | 28,919 | +0.0% shares | Q2 2026 |
| Knott David M JrInvestment manager | 0.2% | $421K | 12,965 | — | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 16). Screen LBRX in the grand portfolio →
LBRX stock trades by members of Congress
No member of Congress has disclosed a trade in LBRX.
Analysis mentioning LBRX
Posts from the blog that cover LB Pharmaceuticals, Inc., newest first.
LBRX questions and answers
Are insiders buying LBRX stock?
No open-market insider purchases or sales of LBRX were filed in the last 90 days.
Which hedge funds own LBRX?
16 13F filers hold LBRX among their 50 largest positions, worth $537.2M combined, including Peter Kolchinsky. The biggest bets by portfolio weight are Nan Fung Group Holdings Ltd (15.6%), Spruce Street Capital LP (8.8%) and Trails Edge Capital Partners, LP (7.8%). In their latest 13Fs, 1 manager opened a new position and 3 added to one.
Has Congress traded LBRX?
No member of Congress has disclosed a trade in LBRX.
Who is the largest holder of LBRX?
Among 13F filers, Deep Track Capital, LP reports the largest LBRX position, $108.8M (3,352,804 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Nan Fung Group Holdings Ltd's: 15.6% of its portfolio.
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