LeonaBio, Inc. (LONA) - 13D/13G Filings

Real time Form 13D and 13G transaction reports:

  • Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
  • Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
  • Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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Reported
DateTime
Transaction
Date
TypeCompany
Symbol
Filed By
Symbol
Shares Owned
% Owned
Shares Vs. Prev ReportView
2026-11-13
4:00 pm
Purchase
2026-09-3013GLEONABIO INC
LONA
Spruce Street Capital LP393,700
4.200%
393,700increase
(New Position)
Filing
History
2026-11-04
4:00 pm
Purchase
2026-10-2813GLEONABIO INC
LONA
Great Point Partners, LLC474,345
5.030%
474,345increase
(New Position)
Filing
History
2026-10-28
3:37 pm
Sale
2026-10-2613DLEONABIO INC
LONA
Sermonix Pharmaceuticals, Inc.3,149,470
25.100%
-2,352,932decrease
(-42.76%)
Filing
History
2026-10-26
4:00 pm
Unchanged
2026-10-2613DLEONABIO INC
LONA
Perceptive Advisors LLC1,889,403
19.990%
0
(Unchanged)
Filing
History
2026-08-31
4:31 pm
Purchase
2026-08-2413DLEONABIO INC
LONA
Sermonix Pharmaceuticals, Inc.5,502,402
36.900%
5,502,402increase
(New Position)
Filing
History
2026-08-25
4:00 pm
Purchase
2026-08-2213DLEONABIO INC
LONA
Perceptive Advisors LLC1,889,403
19.990%
7,033increase
(+0.37%)
Filing
History
2026-08-20
10:34 am
Purchase
2026-08-1813GLEONABIO INC
LONA
ACORN BIOVENTURES, L.P.1,492,521
12.100%
896,453increase
(+150.39%)
Filing
History
2026-05-15
8:03 pm
Purchase
2026-03-3113GLEONABIO INC
LONA
ADAR1 Capital Management LLC727,481
7.700%
727,481increase
(New Position)
Filing
History
2026-05-07
4:19 pm
Purchase
2026-05-0513DLEONABIO INC
LONA
Perceptive Advisors LLC1,882,370
19.990%
23,048increase
(+1.24%)
Filing
History
2026-02-06
4:29 pm
Sale
2025-12-3113GLEONABIO INC
LONA
Baselake Partners, LP75,789
1.900%
-121,692decrease
(-61.62%)
Filing
History
2026-01-16
4:46 pm
Sale
2026-01-1613DLEONABIO INC
LONA
Perceptive Advisors LLC1,859,322
19.990%
-9,728decrease
(-0.52%)
Filing
History
2026-01-08
5:29 pm
Purchase
2026-01-0613GATHIRA PHARMA INC
ATHA
ACORN BIOVENTURES, L.P.596,068
6.200%
94,329increase
(+18.80%)
Filing
History
2025-12-23
5:16 pm
Purchase
2025-12-2313DLEONABIO INC
LONA
Perceptive Advisors LLC1,869,050
20.100%
1,319,026increase
(+239.81%)
Filing
History
2025-12-23
4:46 pm
Purchase
2025-12-2213GATHIRA PHARMA INC
ATHA
ACORN BIOVENTURES, L.P.501,739
5.200%
501,739increase
(New Position)
Filing
History
2025-12-22
4:30 pm
Purchase
2025-12-1813DLEONABIO INC
LONA
Perceptive Advisors LLC550,024
13.900%
2,089increase
(+0.38%)
Filing
History
2025-12-18
3:47 pm
Sale
2025-12-1813GATHIRA PHARMA INC
ATHA
BML Investment Partners, L.P.0
0.000%
-302,716decrease
(Position Closed)
Filing
History
2025-11-14
4:06 pm
Purchase
2025-11-0713GLEONABIO INC
LONA
Baselake Partners, LP197,481
5.000%
197,481increase
(New Position)
Filing
History
2025-10-10
4:41 pm
Sale
2025-10-0113GATHIRA PHARMA INC
ATHA
Oliveira Steven Michael161,218
4.088%
-38,247decrease
(-19.17%)
Filing
History
2025-04-16
4:22 pm
Purchase
2025-04-1413GATHIRA PHARMA INC
ATHA
Oliveira Steven Michael199,465
5.109%
199,465increase
(New Position)
Filing
History
2025-02-14
10:21 am
Purchase
2024-12-3113GATHIRA PHARMA INC
ATHA
BML Investment Partners, L.P.302,716
7.800%
54,271increase
(+21.84%)
Filing
History
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