PORTER DERRELL

PrivateCIK: 1706400

Location

SOUTH SAN FRANCISCO, CA

PORTER DERRELL

→ACUMEN PHARMACEUTICALS, INC.

Jun 17, 2026·3d ago

7 txn

PORTER DERRELL

144

→ACUMEN PHARMACEUTICALS, INC.

Jun 17, 2026·3d ago

-3

PORTER DERRELL

144

→ACUMEN PHARMACEUTICALS, INC.

Jun 16, 2026·4d ago

-2

CHERRY BRIAN N

→ATARA BIOTHERAPEUTICS, INC.

Jun 15, 2026·5d ago

1 txn

CHERRY BRIAN N

→ATARA BIOTHERAPEUTICS, INC.

Jun 15, 2026·5d ago

1 txn

PORTER DERRELL

144

→ACUMEN PHARMACEUTICALS, INC.

Jun 15, 2026·5d ago

HEIDEN WILLIAM K

→ATARA BIOTHERAPEUTICS, INC.

Jun 11, 2026·Jun 11, 2026

1 txn

FUST MATTHEW K

→ATARA BIOTHERAPEUTICS, INC.

Jun 11, 2026·Jun 11, 2026

1 txn

PORTER DERRELL

→ACUMEN PHARMACEUTICALS, INC.

Jun 5, 2026·Jun 5, 2026

2 txn

DRAPKIN KIMBERLEE C

→ACUMEN PHARMACEUTICALS, INC.

Jun 5, 2026·Jun 5, 2026

2 txn

STALFORT JOHN A III

→ACUMEN PHARMACEUTICALS, INC.

Jun 5, 2026·Jun 5, 2026

2 txn

IVES JEFFREY L.

→ACUMEN PHARMACEUTICALS, INC.

Jun 5, 2026·Jun 5, 2026

2 txn

PORTER DERRELL

→PASSAGE BIO, INC.

May 21, 2026·May 21, 2026

1 txn

KASSBERG THOMAS RICHARD

→PASSAGE BIO, INC.

May 21, 2026·May 21, 2026

1 txn

GOWEN MAXINE

→PASSAGE BIO, INC.

May 21, 2026·May 21, 2026

1 txn

ECOR1 CAPITAL, LLC

→ATARA BIOTHERAPEUTICS, INC.

May 11, 2026·May 11, 2026

1 txn

ECOR1 CAPITAL, LLC

→ATARA BIOTHERAPEUTICS, INC.

May 11, 2026·May 11, 2026

1 txn

PANACEA INNOVATION LTD

→ATARA BIOTHERAPEUTICS, INC.

Mar 19, 2026·Mar 19, 2026

4 txn

RA CAPITAL MANAGEMENT, L.P.

→ACUMEN PHARMACEUTICALS, INC.

Mar 18, 2026·Mar 18, 2026

3 txn

NGUYEN ANHCO

→ATARA BIOTHERAPEUTICS, INC.

Mar 11, 2026·Mar 11, 2026

1 txn

GRANT-HUERTA YANINA

→ATARA BIOTHERAPEUTICS, INC.

Mar 11, 2026·Mar 11, 2026

1 txn

MEISNER DEREK M

→ACUMEN PHARMACEUTICALS, INC.

Mar 10, 2026·Mar 10, 2026

3 txn

GRANT-HUERTA YANINA

→ATARA BIOTHERAPEUTICS, INC.

Mar 4, 2026·Mar 4, 2026

4 txn

NGUYEN ANHCO

→ATARA BIOTHERAPEUTICS, INC.

Mar 4, 2026·Mar 4, 2026

4 txn

MEISNER DEREK M

→ACUMEN PHARMACEUTICALS, INC.

Mar 3, 2026·Mar 3, 2026

3 txn

Page 1 of 23 · 575 total

Filer	Form	Target	Filed	Activity
PORTER DERRELLCIK · 1706400	4 Trade	ACUMEN PHARMACEUTICALS, INC.CIK · 1576885	Jun 17, 2026 3d ago	7txn
PORTER DERRELLCIK · 1706400	144 Sale	ACUMEN PHARMACEUTICALS, INC.CIK · 1576885	Jun 17, 2026 3d ago	—
PORTER DERRELLCIK · 1706400	144 Sale	ACUMEN PHARMACEUTICALS, INC.CIK · 1576885	Jun 16, 2026 4d ago	—
CHERRY BRIAN NCIK · 1290922	4 Trade	ATARA BIOTHERAPEUTICS, INC.CIK · 1604464	Jun 15, 2026 5d ago	1txn
CHERRY BRIAN NCIK · 1290922	3 Initial	ATARA BIOTHERAPEUTICS, INC.CIK · 1604464	Jun 15, 2026 5d ago	1txn
PORTER DERRELLCIK · 1706400	144 Sale	ACUMEN PHARMACEUTICALS, INC.CIK · 1576885	Jun 15, 2026 5d ago	—
HEIDEN WILLIAM KCIK · 1214939	4 Trade	ATARA BIOTHERAPEUTICS, INC.CIK · 1604464	Jun 11, 2026 Jun 11, 2026	1txn
FUST MATTHEW KCIK · 1397266	4 Trade	ATARA BIOTHERAPEUTICS, INC.CIK · 1604464	Jun 11, 2026 Jun 11, 2026	1txn
PORTER DERRELLCIK · 1706400	4 Trade	ACUMEN PHARMACEUTICALS, INC.CIK · 1576885	Jun 5, 2026 Jun 5, 2026	2txn
DRAPKIN KIMBERLEE CCIK · 1340881	4 Trade	ACUMEN PHARMACEUTICALS, INC.CIK · 1576885	Jun 5, 2026 Jun 5, 2026	2txn
STALFORT JOHN A IIICIK · 1709418	4 Trade	ACUMEN PHARMACEUTICALS, INC.CIK · 1576885	Jun 5, 2026 Jun 5, 2026	2txn
IVES JEFFREY L.CIK · 1614096	4 Trade	ACUMEN PHARMACEUTICALS, INC.CIK · 1576885	Jun 5, 2026 Jun 5, 2026	2txn
PORTER DERRELLCIK · 1706400	4 Trade	PASSAGE BIO, INC.CIK · 1787297	May 21, 2026 May 21, 2026	1txn
KASSBERG THOMAS RICHARDCIK · 1303811	4 Trade	PASSAGE BIO, INC.CIK · 1787297	May 21, 2026 May 21, 2026	1txn
GOWEN MAXINECIK · 1280044	4 Trade	PASSAGE BIO, INC.CIK · 1787297	May 21, 2026 May 21, 2026	1txn
ECOR1 CAPITAL, LLCCIK · 1587114	4 Trade	ATARA BIOTHERAPEUTICS, INC.CIK · 1604464	May 11, 2026 May 11, 2026	1txn
ECOR1 CAPITAL, LLCCIK · 1587114	3 Initial	ATARA BIOTHERAPEUTICS, INC.CIK · 1604464	May 11, 2026 May 11, 2026	1txn
PANACEA INNOVATION LTDCIK · 2010692	4 Trade	ATARA BIOTHERAPEUTICS, INC.CIK · 1604464	Mar 19, 2026 Mar 19, 2026	4txn
RA CAPITAL MANAGEMENT, L.P.CIK · 1346824	4 Trade	ACUMEN PHARMACEUTICALS, INC.CIK · 1576885	Mar 18, 2026 Mar 18, 2026	3txn
NGUYEN ANHCOCIK · 1977970	4 Trade	ATARA BIOTHERAPEUTICS, INC.CIK · 1604464	Mar 11, 2026 Mar 11, 2026	1txn
GRANT-HUERTA YANINACIK · 2064348	4 Trade	ATARA BIOTHERAPEUTICS, INC.CIK · 1604464	Mar 11, 2026 Mar 11, 2026	1txn
MEISNER DEREK MCIK · 1752461	4 Trade	ACUMEN PHARMACEUTICALS, INC.CIK · 1576885	Mar 10, 2026 Mar 10, 2026	3txn
GRANT-HUERTA YANINACIK · 2064348	4 Trade	ATARA BIOTHERAPEUTICS, INC.CIK · 1604464	Mar 4, 2026 Mar 4, 2026	4txn
NGUYEN ANHCOCIK · 1977970	4 Trade	ATARA BIOTHERAPEUTICS, INC.CIK · 1604464	Mar 4, 2026 Mar 4, 2026	4txn
MEISNER DEREK MCIK · 1752461	4 Trade	ACUMEN PHARMACEUTICALS, INC.CIK · 1576885	Mar 3, 2026 Mar 3, 2026	3txn

Page 1 of 23 · 575 total