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Jade Biosciences, Inc.

JBIO No buying or selling
CIK 0001798749 #2323 in the set updated 18 Sep 2026
Bought (12 mo)
$0.00
out of their own pocket, the only kind of buying there is
Sold (12 mo)
$0.00
$0.00 on a plan · $0.00 straight out of an exercise
Sold at will
$0.00
0 of 0 sales
Net
$0.00
$0.00 against sales at will

By person

6 insiders · 0 transactions
Insider
Role
Bought
Sold
Net
Holding
Worth
Change
Fairmount Funds Management LLC entity
Director
1,897,677
$14.04M
+236.1%
RA CAPITAL MANAGEMENT, L.P. entity
10% owner
1,287,858
$9.53M
+471.0%
King Andrew James
See Remarks
386,113
$2.86M
+12.0%
Frohlich Tom
Chief Executive Officer
86,331
$638.85K
+5,361%
Dahms Bradford D.
Chief Financial Officer
37,813
$279.82K
Balta Elizabeth
See Remarks
28,125
$208.13K

No percentages here. This company's share count has moved by a factor of 2.2 over the window, from 28,874,513 to 63,597,387 shares. A split, a merger or a large issue changes what the company is, and a holding measured at one point in that run is not a fraction of it at another.

Nothing of that kind in this period.

What was left out

Form 4 filings counted 11
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 2
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 0
Sales at will 0
Transactions with no price 0
Shares from compensation/vesting 1,519,064
History held since 1 Jul 2021