LB PHARMACEUTICALS INC - Common Stock, $0.0001 par value per share (LBRX) Institutional Ownership

13F Institutional Holders and Ownership History from Q3 2025 to Q4 2025

Type / Class
Equity / Common Stock, $0.0001 par value per share
Symbol
LBRX on Nasdaq
Shares outstanding
25,386,253
Price per share
$22.53
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

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

Institutional Holders of LB PHARMACEUTICALS INC - Common Stock, $0.0001 par value per share (LBRX) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 24,789,567 $551,818,582 +$64,572,138 $22.26 67
2025 Q3 19,945,854 $314,944,399 +$314,944,399 $15.79 53