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Jade Biosciences, Inc.

JBIO Net buying
CIK 0001798749 #2323 in the set updated 18 Sep 2026
Bought (120 mo)
$72.59M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$17.75M
$26.04K on a plan · $17.28M straight out of an exercise
Sold at will
$443.62K
6 of 194 sales
Net
+$54.85M
+$72.15M against sales at will

By person

17 insiders · 205 transactions
Insider
Role
Bought
Sold
Net
Holding
Worth
Change
RA CAPITAL MANAGEMENT, L.P. entity
10% owner
$40.55M (2)
+$40.55M
1,599,028
$11.83M
Dake Benjamin T
SEE REMARKS
$8.16M (84) scheduled
−$8.16M
14,252
$105.46K
Atlas Venture Fund XII, L.P. entity
10% owner
$7.50M (1)
+$7.50M
2,327,909
$17.23M
GRAYZEL DAVID S.
Director
$7.50M (1)
$334.48K (1)
+$7.17M
3,118,381
$23.08M
+11,719%
Cormorant Asset Management, LP entity
Former 10% Owner
$7.00M (1)
+$7.00M
2,030,691
$15.03M
Katabi Maha
Director
$5.00M (1)
+$5.00M
3,758,686
$27.81M
Sofinnova Venture Partners X, L.P. entity
10% owner
$5.00M (1)
+$5.00M
3,758,686
$27.81M
NOYES TIMOTHY P
CHIEF EXECUTIVE OFFICER
$3.37M (31) scheduled
−$3.37M
0
$0.00
−100.0%
Eldridge George A
SEE REMARKS
$2.68M (24) scheduled
−$2.68M
5,022
$37.16K
0.0%
Gillies Hunter
CHIEF MEDICAL OFFICER
$1.56M (20) scheduled
−$1.56M
5,602
$41.45K
0.0%
NIVEN RALPH
CHIEF SCIENTIFIC OFFICER
$989.37K (25) scheduled
−$989.37K
1,609
$11.91K
0.0%
Verwijs Marinus
CHIEF TECHNICAL OFFICER
$646.84K (9) scheduled
−$646.84K
0
$0.00
−100.0%
Frohlich Tom
Chief Executive Officer
$44.40K (1)
+$44.40K
86,331
$638.85K
+5,361%
Fairmount Funds Management LLC entity
Director
1,897,677
$14.04M
+236.1%
King Andrew James
See Remarks
386,113
$2.86M
+12.0%
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.

Insider
Date
Role
Action
Shares
Price
Amount
Dake Benjamin T
1 Aug 2024
SEE REMARKS
Exercised, kept
1,507
$1.74
$2.62K
Dake Benjamin T
31 Jul 2024
SEE REMARKS
Exercised, kept
11,454
$1.74
$19.93K
Gillies Hunter
13 Dec 2023
CHIEF MEDICAL OFFICER
Exercised, kept
4,000
$1.74
$6.96K

What was left out

Form 4 filings counted 184
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 12
Sales on a Rule 10b5-1 plan 2
Sales straight out of an exercise 186
Sales at will 6
Transactions with no price 0
Shares from compensation/vesting 22,881,836
Sales filed before the plan box existed 2
History held since 1 Jul 2021