United States

Rallybio Corp (RLYB)

Rallybio Corp experienced one notable insider trading event recently. Chief Financial Officer Jonathan I. Lieber sold 599 shares valued at approximately $9,608 on October 27, 2026. This transaction occurred alongside the company's latest earnings report. The stock price has declined 5.2% over the past ninety days, currently trading near its yearly peak.
Ticker: RLYB Exchange: NSM
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Rallybio Corp. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
1.7
Lieber Jonathan I Chief Financial Officer Officer
Transaction date
Sale
Price
254.45
Quantity 97,441 -29.6%
Value US$2,532,986
1.7
Lieber Jonathan I Chief Financial Officer Officer
Transaction date
Sale
Price
5.06
Quantity 789 -16.1%
Value US$3,992
1.7
Lieber Jonathan I See Remarks Officer
Transaction date
Purchase
Price
5.21
Quantity 5,000 New position
Value US$26,050
4.0
PARMAR KUSH Non-Executive Director
Transaction date
Sale
Price
8.20
Quantity 100,000 -4.0%
Value US$820,000
2.5
5AM Partners V, LLC Large shareholder
Transaction date
Sale
Price
8.20
Quantity 100,000 -4.0%
Value US$820,000
4.0
PARMAR KUSH Non-Executive Director Large shareholder
Transaction date
Sale
Price
12.50
Quantity 50,329 -3.9%
Value US$629,112
4.0
PARMAR KUSH Non-Executive Director Large shareholder
Transaction date
Sale
Price
12.50
Quantity 99,671 -3.9%
Value US$1,245,888
4.0
PARMAR KUSH Non-Executive Director Large shareholder
Transaction date
Sale
Price
13.00
Quantity 33,553 -2.5%
Value US$436,189
4.0
PARMAR KUSH Non-Executive Director Large shareholder
Transaction date
Sale
Price
13.00
Quantity 66,447 -2.5%
Value US$863,811
3.1
Fryer Jeffrey M See Remarks Officer
Transaction date
Purchase
Price
8.04
Quantity 3,000 +6.8%
Value US$24,120
4.0
PARMAR KUSH Non-Executive Director
Transaction date
Sale
Price
13.05
Quantity 70,461 -5.0%
Value US$919,516
4.0
PARMAR KUSH Non-Executive Director
Transaction date
Sale
Price
13.05
Quantity 139,539 -5.0%
Value US$1,820,984
3.1
Fryer Jeffrey M See Remarks Officer
Transaction date
Purchase
Price
8.70
Quantity 1,400 +3.3%
Value US$12,180
2.6
Uden Stephen See Remarks Officer
Transaction date
Purchase
Price
9.62
Quantity 807 +0.1%
Value US$7,763
2.6
Uden Stephen See Remarks Officer
Transaction date
Purchase
Price
9.06
Quantity 4,193 +0.6%
Value US$37,989
2.6
Uden Stephen See Remarks Officer
Transaction date
Purchase
Price
10.55
Quantity 5,000 +0.7%
Value US$52,750
2.2
MACKAY MARTIN Chief Executive Officer Executive Director
Transaction date
Purchase
Price
10.65
Quantity 4,496 +1.6%
Value US$47,882
2.2
MACKAY MARTIN Chief Executive Officer Executive Director
Transaction date
Purchase
Price
10.10
Quantity 5,504 +2.0%
Value US$55,590
3.1
Fryer Jeffrey M See Remarks Officer
Transaction date
Purchase
Price
9.44
Quantity 9,295 +27.9%
Value US$87,745
3.1
Fryer Jeffrey M See Remarks Officer
Transaction date
Purchase
Price
8.97
Quantity 705 +2.2%
Value US$6,324
3.8
SHANNON TIMOTHY M Non-Executive Director
Transaction date
Purchase
Price
13.00
Quantity 76,923 +3.3%
Value US$999,999
4.0
PARMAR KUSH Non-Executive Director
Transaction date
Purchase
Price
13.00
Quantity 615,384 +77.8%
Value US$7,999,992
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-10-28 2026-10-27 S Sale
1.7
Lieber Jonathan I

Chief Financial Officer

Officer
97,441 -29.6%
254.45
US$2,532,986 		97,441 -29.6% 254.45 US$2,532,986
2026-05-20 2026-05-19 B Purchase
4.0
ADAR1 Capital Management, LLC
Large shareholder
38,872 +25.0%
390.16
US$3,996,285 		38,872 +25.0% 390.16 US$3,996,285
2026-05-20 2026-05-19 B Purchase
4.0
ADAR1 Capital Management, LLC
Large shareholder
26,474 +8.9%
494.42
US$523,402 		26,474 +8.9% 494.42 US$523,402
2026-05-20 2026-05-18 B Purchase
4.0
ADAR1 Capital Management, LLC
Large shareholder
6,009 +0.7%
13.98
US$83,981 		6,009 +0.7% 13.98 US$83,981
2026-05-15 2026-05-15 B Purchase
4.0
ADAR1 Capital Management, LLC
Large shareholder
200 +0.0%
13.95
US$2,790 		200 +0.0% 13.95 US$2,790
2026-05-15 2026-05-15 B Purchase
4.0
ADAR1 Capital Management, LLC
Large shareholder
100 +0.0%
13.80
US$1,380 		100 +0.0% 13.80 US$1,380
2026-05-15 2026-05-13 B Purchase
4.0
ADAR1 Capital Management, LLC
Large shareholder
75,178 +9.0%
14.00
US$1,052,492 		75,178 +9.0% 14.00 US$1,052,492
2026-05-15 2026-05-13 B Purchase
4.0
ADAR1 Capital Management, LLC
Large shareholder
4,081 +0.5%
13.80
US$56,315 		4,081 +0.5% 13.80 US$56,315
2026-05-13 2026-05-12 B Purchase
4.0
ADAR1 Capital Management, LLC
Large shareholder
800 +0.1%
13.83
US$11,063 		800 +0.1% 13.83 US$11,063
2026-05-13 2026-05-11 B Purchase
4.0
ADAR1 Capital Management, LLC
Large shareholder
19,900 +2.5%
14.00
US$278,600 		19,900 +2.5% 14.00 US$278,600
2026-05-13 2026-05-11 B Purchase
4.0
ADAR1 Capital Management, LLC
Large shareholder
25,000 +3.2%
14.00
US$350,000 		25,000 +3.2% 14.00 US$350,000
2026-05-13 2026-05-11 B Purchase
4.0
ADAR1 Capital Management, LLC
Large shareholder
5,100 +0.7%
14.00
US$71,392 		5,100 +0.7% 14.00 US$71,392
2026-05-06 2026-05-05 B Purchase
4.0
ADAR1 Capital Management, LLC
Large shareholder
35,101 +4.7%
14.00
US$491,260 		35,101 +4.7% 14.00 US$491,260
2026-05-06 2026-05-04 B Purchase
4.0
ADAR1 Capital Management, LLC
Large shareholder
116,904 +18.6%
13.97
US$1,633,207 		116,904 +18.6% 13.97 US$1,633,207
2026-05-06 2026-05-04 B Purchase
4.0
ADAR1 Capital Management, LLC
Large shareholder
3,900 +0.6%
13.90
US$54,201 		3,900 +0.6% 13.90 US$54,201
2026-02-23 2026-02-23 S Sale
1.7
Lieber Jonathan I

Chief Financial Officer

Officer
789 -16.1%
5.06
US$3,992 		789 -16.1% 5.06 US$3,992
2023-03-16 2023-03-14 B Purchase
1.7
Lieber Jonathan I

See Remarks

Officer
5,000 New position
5.21
US$26,050 		5,000 New position 5.21 US$26,050
2023-03-09 2023-03-07 S Sale
4.0
PARMAR KUSH
Non-Executive Director
100,000 -4.0%
8.20
US$820,000 		100,000 -4.0% 8.20 US$820,000
2023-03-09 2023-03-07 S Sale
2.5
5AM Partners V, LLC
Large shareholder
100,000 -4.0%
8.20
US$820,000 		100,000 -4.0% 8.20 US$820,000
2022-06-07 2022-06-03 S Sale
4.0
PARMAR KUSH
Non-Executive Director Large shareholder
50,329 -3.9%
12.50
US$629,112 		50,329 -3.9% 12.50 US$629,112
2022-06-07 2022-06-03 S Sale
4.0
PARMAR KUSH
Non-Executive Director Large shareholder
99,671 -3.9%
12.50
US$1,245,888 		99,671 -3.9% 12.50 US$1,245,888
2022-06-07 2022-06-03 S Sale
3.6
5AM Opportunities I, L.P.
Large shareholder
99,671 -3.9%
12.50
US$1,245,888 		99,671 -3.9% 12.50 US$1,245,888
2022-06-07 2022-06-03 S Sale
3.6
5AM Opportunities I, L.P.
Large shareholder
50,329 -3.9%
12.50
US$629,112 		50,329 -3.9% 12.50 US$629,112
2022-05-25 2022-05-23 S Sale
4.0
PARMAR KUSH
Non-Executive Director Large shareholder
33,553 -2.5%
13.00
US$436,189 		33,553 -2.5% 13.00 US$436,189
2022-05-25 2022-05-23 S Sale
4.0
PARMAR KUSH
Non-Executive Director Large shareholder
66,447 -2.5%
13.00
US$863,811 		66,447 -2.5% 13.00 US$863,811
2022-05-25 2022-05-23 S Sale
3.6
5AM Opportunities I, L.P.
Large shareholder
66,447 -2.5%
13.00
US$863,811 		66,447 -2.5% 13.00 US$863,811
2022-05-25 2022-05-23 S Sale
3.6
5AM Opportunities I, L.P.
Large shareholder
33,553 -2.5%
13.00
US$436,189 		33,553 -2.5% 13.00 US$436,189
2022-03-23 2022-03-21 B Purchase
3.1
Fryer Jeffrey M

See Remarks

Officer
3,000 +6.8%
8.04
US$24,120 		3,000 +6.8% 8.04 US$24,120
2022-02-10 2022-02-08 S Sale
4.0
PARMAR KUSH
Non-Executive Director
70,461 -5.0%
13.05
US$919,516 		70,461 -5.0% 13.05 US$919,516
2022-02-10 2022-02-08 S Sale
4.0
PARMAR KUSH
Non-Executive Director
139,539 -5.0%
13.05
US$1,820,984 		139,539 -5.0% 13.05 US$1,820,984
2022-02-10 2022-02-08 S Sale
3.6
5AM Opportunities I, L.P.
Large shareholder
139,539 -5.0%
13.05
US$1,820,984 		139,539 -5.0% 13.05 US$1,820,984
2022-02-10 2022-02-08 S Sale
3.6
5AM Opportunities I, L.P.
Large shareholder
70,461 -5.0%
13.05
US$919,516 		70,461 -5.0% 13.05 US$919,516
2022-01-21 2022-01-19 B Purchase
3.1
Fryer Jeffrey M

See Remarks

Officer
1,400 +3.3%
8.70
US$12,180 		1,400 +3.3% 8.70 US$12,180
2022-01-14 2022-01-13 B Purchase
2.6
Uden Stephen

See Remarks

Officer
807 +0.1%
9.62
US$7,763 		807 +0.1% 9.62 US$7,763
2022-01-14 2022-01-13 B Purchase
2.6
Uden Stephen

See Remarks

Officer
4,193 +0.6%
9.06
US$37,989 		4,193 +0.6% 9.06 US$37,989
2022-01-14 2022-01-12 B Purchase
2.6
Uden Stephen

See Remarks

Officer
5,000 +0.7%
10.55
US$52,750 		5,000 +0.7% 10.55 US$52,750
2022-01-12 2022-01-11 B Purchase
2.2
MACKAY MARTIN

Chief Executive Officer

Executive Director
4,496 +1.6%
10.65
US$47,882 		4,496 +1.6% 10.65 US$47,882
2022-01-12 2022-01-10 B Purchase
2.2
MACKAY MARTIN

Chief Executive Officer

Executive Director
5,504 +2.0%
10.10
US$55,590 		5,504 +2.0% 10.10 US$55,590
2022-01-11 2022-01-07 B Purchase
3.1
Fryer Jeffrey M

See Remarks

Officer
9,295 +27.9%
9.44
US$87,745 		9,295 +27.9% 9.44 US$87,745
2022-01-11 2022-01-07 B Purchase
3.1
Fryer Jeffrey M

See Remarks

Officer
705 +2.2%
8.97
US$6,324 		705 +2.2% 8.97 US$6,324
2021-08-04 2021-08-02 B Purchase
3.8
SHANNON TIMOTHY M
Non-Executive Director
76,923 +3.3%
13.00
US$999,999 		76,923 +3.3% 13.00 US$999,999
2021-08-04 2021-08-02 B Purchase
4.0
PARMAR KUSH
Non-Executive Director
615,384 +77.8%
13.00
US$7,999,992 		615,384 +77.8% 13.00 US$7,999,992
2021-08-04 2021-08-02 B Purchase
3.6
5AM Opportunities I, L.P.
Large shareholder
615,384 +77.8%
13.00
US$7,999,992 		615,384 +77.8% 13.00 US$7,999,992
2021-08-02 2021-07-29 B Purchase
3.2
VIKING GLOBAL INVESTORS LP
Large shareholder
806,000 +23.8%
13.00
US$10,478,000 		806,000 +23.8% 13.00 US$10,478,000
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