$ABOS

$2.14 -$0.13 (5.73%) Live

$ABOS Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Company Executives

$ABOS Management Team

Mr. Daniel O'Connell

Chief Executive Officer

Director

Age 55

Compensation $4.781M USD

Sex Male

Mr. W. Matthew Zuga

Chief Financial Officer

Chief Business Officer

Age 59

Compensation $1.690M USD

Sex Male

Mr. Russell Barton

Chief Operating Officer

Age 67

Compensation $223.7K USD

Sex Male

Mr. Derek Meisner

Chief Legal Officer

Age 54

Compensation $1.313M USD

Sex Male

Dr. Amy Schacterle

Chief Regulatory Officer

Head of Quality

Age 58

Compensation -

Sex Female

Dr. Eric Siemers

Chief Medical Officer

Age 69

Compensation $637.9K USD

Sex Male

Mr. Sean Stalfort

Independent Chairman of the Board

Age 55

Compensation $130.3K USD

Sex Male

Dr. James Doherty

President

Chief Development Officer

Age 57

Compensation $2.182M USD

Sex Male

Name / Title	Age	Compensation	Sex
Mr. Daniel O'Connell Chief Executive Officer Director	55	$4.781M USD	Male
Mr. W. Matthew Zuga Chief Financial Officer Chief Business Officer	59	$1.690M USD	Male
Mr. Russell Barton Chief Operating Officer	67	$223.7K USD	Male
Mr. Derek Meisner Chief Legal Officer	54	$1.313M USD	Male
Dr. Amy Schacterle Chief Regulatory Officer Head of Quality	58	-	Female
Dr. Eric Siemers Chief Medical Officer	69	$637.9K USD	Male
Mr. Sean Stalfort Independent Chairman of the Board	55	$130.3K USD	Male
Dr. James Doherty President Chief Development Officer	57	$2.182M USD	Male

Board of Directors

From the proxy statement filed Apr 23, 2026

Directors

serving now

Independent

7 of 8

stated in the proxy

Average tenure

7.4 years

from year joined

CEO also chairs the board

George Golumbeski, Ph.D.

Director	Age	On board	Independent	Committees	Other public boards	Pay
George Golumbeski, Ph.D. Board chair	68	2025 1 year	Independent	None stated	None stated	Not stated
Derrell Porter, M.D.	55	2023 3 years	Independent	None stated	Passage Bio., Inc.	Not stated
Laura Stoppel, Ph.D.	40	2020 6 years	Independent	Nominating and Corporate Governance Committee · Chair	Artiva Biotherapeutics, Inc.	Not stated
Nathan Fountain, M.D. III	63	2021 5 years	Independent	None stated	None stated	Not stated
Daniel O’Connell CEO	56	2006 20 years	Not independent	None stated	None stated	Paid as CEO
Kimberlee C. Drapkin	58	2022 4 years	Independent	Audit Committee · Chair	None stated	Not stated
Jeffrey Ives, Ph.D.	75	2014 12 years	Independent	Compensation Committee · Chair	None stated	Not stated
Sean Stalfort	56	2018 8 years	Independent	None stated	Verrica Pharmaceuticals, Inc., Taysha Gene Therapies, Inc.	Not stated

Each director opens the passage of the proxy that names them. "Not stated" means the proxy does not say; it never means "no". Pay is the proxy's Director Compensation table; the CEO is paid as an executive.

No related-party transactions disclosed

The proxy filed Apr 23, 2026 states there were none.

Read it in the proxy

Comments

Company Executives

$ABOS Management Team

Mr. Daniel O'Connell

Mr. W. Matthew Zuga

Mr. Russell Barton

Mr. Derek Meisner

Dr. Amy Schacterle

Dr. Eric Siemers

Mr. Sean Stalfort

Dr. James Doherty

Board of Directors

Related-party transactions

No related-party transactions disclosed