Rallybio Corporation

Last updated September 27, 2026

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Organization details

Legal name: Rallybio Corporation
Former names: Rallybio Holdings, LLC
Ownership: Public
Status: Active
Sector (GICS): Health Care
SIC code: 2834 — Pharmaceutical Preparations
Jurisdiction of incorporation: Delaware
Headquarters city: New Haven
Headquarters state / province: Connecticut
Headquarters country: United States
Fiscal year end: December
Ticker symbol: RLYB
Primary stock exchange: Nasdaq

Identifiers

SEC CIK: 0001739410
EIN: 85-1083789

Board of directors

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Christine A. Nash · Director
Since 2023
Helen M. Boudreau · Director
Since 2023
Hui Liu · Director
Since 2023
Kush Parmar · Director
Since 2023
Martin Mackay · Director · Executive Chairman
Since 2023
Paula Soteropoulos · Director
Since 2023
Robert Lorne Hopfner · Director
Since 2023
Ronald Hunt · Director
Since 2023
Stephen Uden · Director · Chief Executive Officer
Since 2024
Wendy Chung · Director
Since 2023

Chief executives

Martin Mackay · Chief Executive Officer

Dates unknown

Stephen Uden · Chief Executive Officer

Dates unknown

Director election results

Annual meeting of November 4, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

Board connections

6 of this board's directors also sit on 9 other boards. 9 are in the same sector.

Shared director Other board Same sector

Charles River Laboratories International Inc. Same sector
via Martin Mackay
Dianthus Therapeutics Inc. Same sector
via Paula Soteropoulos
Entrada Therapeutics Inc. Same sector
via Kush Parmar
Evommune Inc. Same sector
via Robert Lorne Hopfner
Kailera Therapeutics Inc. Same sector
via Martin Mackay
Prime Medicine Inc. Same sector
via Wendy Chung
Shattuck Labs Inc. Same sector
via Helen M. Boudreau
Tvardi Therapeutics Inc. Same sector
via Helen M. Boudreau
uniQure N.V. Same sector
via Paula Soteropoulos

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months: $4,229,383; 14 purchases by 2 insiders
Sold, last 12 months: $13,600; 2 sales by 1 insider

Date	Insider	Transaction	Shares	Price	Value
Nov 4, 2026	Ronald Hunt Director	Option exercise	+14,305	$4.45	$63,657
Nov 4, 2026	Martin Mackay Director	Option exercise	+11,607	$7.60	$88,213
Nov 4, 2026	Martin Mackay Director	Option exercise	+3,562	$2.38	$8,478
Nov 4, 2026	Martin Mackay Director	Option exercise	+18,055	$4.45	$80,345
Nov 2, 2026	Jonathan I. Lieber Officer (Chief Financial Officer)	Option exercise	+7,124	$14.88	$106,005
Oct 29, 2026	Ronald Hunt Director	Option exercise	+3,562	$2.38	$8,478
Oct 29, 2026	Jonathan I. Lieber Officer (Chief Financial Officer)	Option exercise	+7,875	$14.88	$117,180
Oct 29, 2026	Ronald Hunt Director	Option exercise	+9,196	$7.60	$69,890
Oct 29, 2026	Jonathan I. Lieber Officer (Chief Financial Officer)	Option exercise	+13,589	$6.08	$82,621
Oct 29, 2026	Ronald Hunt Director	Option exercise	+2,062	$15.28	$31,507
Oct 28, 2026	Christine A. Nash Director	Option exercise	+3,562	$2.38	$8,478
Oct 27, 2026	Stephen Uden Director, Officer (Chief Executive Officer)	Option exercise	+33,244	$6.08	$202,124
Oct 27, 2026	Jonathan I. Lieber Officer (Chief Financial Officer)	Open-market sale	−599	$16.04	$9,608
Oct 26, 2026	Wendy Chung Director	Option exercise	+2,062	$15.28	$31,507
Oct 26, 2026	Jonathan I. Lieber Officer (Chief Financial Officer)	Grant or award	+2,500	—	—

Peers

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Questions about Rallybio Corporation

Who is the CEO of Rallybio Corporation?

Martin Mackay is Rallybio Corporation's Chief Executive Officer.

How many directors are on Rallybio Corporation's board?

Rallybio Corporation's board has 10 directors: Christine A. Nash, Helen M. Boudreau, Hui Liu, Kush Parmar, Martin Mackay, Paula Soteropoulos, Robert Lorne Hopfner, Ronald Hunt, Stephen Uden and Wendy Chung.

Are Rallybio Corporation insiders buying or selling shares?

Over the last 12 months, Rallybio Corporation insiders bought $4.2 million of shares in 14 purchases and sold $13,600 of shares in 2 sales on the open market, as reported to the SEC on Forms 4 and 5.

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