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Rallybio Corp

RLYB Net buying
CIK 0001739410 #4404 in the set updated 17 Sep 2026
Bought (12 mo)
$4.23M
out of their own pocket, the only kind of buying there is
Sold (12 mo)
$3.99K
$0.00 on a plan · $0.00 straight out of an exercise
Sold at will
$3.99K
1 of 1 sales
Net
+$4.23M
+$4.23M against sales at will

By person

3 insiders · 16 transactions
Insider
Role
Bought
Sold
Net
Holding
Worth
Change
ADAR1 Capital Management, LLC entity
10% owner
$4.23M (14)
+$4.23M
926,352
$12.78M
+48.5%
Lieber Jonathan I
Chief Financial Officer
$3.99K (1)
−$3.99K
4,115
$56.79K
+71.2%
Boudreau Helen M
Director
6,542
$90.28K
+119.5%

No percentages here. This company's share count has moved by a factor of 8.0 over the window, from 5,289,675 to 42,243,774 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
Boudreau Helen M
6 Jul 2026
Director
Exercised, kept
3,562
$2.38
$8.48K
ADAR1 Capital Management, LLC
19 May 2026
10% owner
Buy indirect
200
$13.80
$2.76K
ADAR1 Capital Management, LLC
19 May 2026
10% owner
Buy indirect
10,000
$13.98
$139.82K
ADAR1 Capital Management, LLC
18 May 2026
10% owner
Buy indirect
6,009
$13.98
$83.98K
ADAR1 Capital Management, LLC
15 May 2026
10% owner
Buy indirect
200
$13.95
$2.79K
ADAR1 Capital Management, LLC
15 May 2026
10% owner
Buy indirect
100
$13.80
$1.38K
ADAR1 Capital Management, LLC
13 May 2026
10% owner
Buy indirect
75,178
$14.00
$1.05M
ADAR1 Capital Management, LLC
13 May 2026
10% owner
Buy indirect
4,081
$13.80
$56.31K
ADAR1 Capital Management, LLC
12 May 2026
10% owner
Buy indirect
800
$13.83
$11.06K
ADAR1 Capital Management, LLC
11 May 2026
10% owner
Buy indirect
19,900
$14.00
$278.60K
ADAR1 Capital Management, LLC
11 May 2026
10% owner
Buy indirect
25,000
$14.00
$350.00K
ADAR1 Capital Management, LLC
11 May 2026
10% owner
Buy indirect
5,100
$14.00
$71.39K
ADAR1 Capital Management, LLC
5 May 2026
10% owner
Buy indirect
35,101
$14.00
$491.26K
ADAR1 Capital Management, LLC
4 May 2026
10% owner
Buy indirect
116,904
$13.97
$1.63M
ADAR1 Capital Management, LLC
4 May 2026
10% owner
Buy indirect
3,900
$13.90
$54.20K
Lieber Jonathan I
23 Feb 2026
Chief Financial Officer
Sell
789
$5.06
$3.99K

What was left out

Form 4 filings counted 8
Amendments (4/A) skipped 0
Filings about a different issuer 0
Unreadable filings 0
Joint filings 4
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 0
Sales at will 1
Transactions with no price 0
Shares from compensation/vesting 6,062
History held since 2 Aug 2021