ATLAS VENTURE OPPORTUNITY FUND II, L.P.

PrivateCIK: 1885327

Location

CAMBRIDGE, MA

KERR DOUGLAS

→DYNE THERAPEUTICS, INC.

Oct 22, 2026·5d ago

2 txn

BITTERMAN KEVIN

→DISC MEDICINE, INC.

Oct 21, 2026·6d ago

9 txn

ATLAS VENTURE OPPORTUNITY FUND II, L.P.

144

→DISC MEDICINE, INC.

Oct 21, 2026·6d ago

ATLAS VENTURE OPPORTUNITY FUND I, L.P.

144

→DISC MEDICINE, INC.

Oct 21, 2026·6d ago

ATLAS VENTURE FUND X, L.P.

144

→DISC MEDICINE, INC.

Oct 21, 2026·6d ago

ATLAS VENTURE FUND XII, L.P.

144

→DISC MEDICINE, INC.

Oct 21, 2026·6d ago

ATLAS VENTURE OPPORTUNITY FUND II, L.P.

144

→DISC MEDICINE, INC.

Oct 20, 2026·Oct 20, 2026

ATLAS VENTURE OPPORTUNITY FUND I, L.P.

144

→DISC MEDICINE, INC.

Oct 20, 2026·Oct 20, 2026

ATLAS VENTURE FUND X, L.P.

144

→DISC MEDICINE, INC.

Oct 20, 2026·Oct 20, 2026

ATLAS VENTURE FUND XII, L.P.

144

→DISC MEDICINE, INC.

Oct 20, 2026·Oct 20, 2026

ATLAS VENTURE OPPORTUNITY FUND II, L.P.

144

→DISC MEDICINE, INC.

Oct 19, 2026·Oct 19, 2026

ATLAS VENTURE OPPORTUNITY FUND I, L.P.

144

→DISC MEDICINE, INC.

Oct 19, 2026·Oct 19, 2026

ATLAS VENTURE FUND X, L.P.

144

→DISC MEDICINE, INC.

Oct 19, 2026·Oct 19, 2026

ATLAS VENTURE FUND XII, L.P.

144

→DISC MEDICINE, INC.

Oct 19, 2026·Oct 19, 2026

MORRISON JODIE POPE

→Q32 BIO INC.

Oct 14, 2026·Oct 14, 2026

1 txn

KALOWSKI LEE

→Q32 BIO INC.

Oct 14, 2026·Oct 14, 2026

1 txn

POSNER BRIAN S

→DYNE THERAPEUTICS, INC.

Oct 6, 2026·Oct 6, 2026

1 txn

RA CAPITAL MANAGEMENT, L.P.

→SIONNA THERAPEUTICS, INC.

Sep 21, 2026·Sep 21, 2026

5 txn

RIDLOFF ELENA

→SIONNA THERAPEUTICS, INC.

Sep 18, 2026·Sep 18, 2026

4 txn

CLOONAN MICHAEL

→SIONNA THERAPEUTICS, INC.

Sep 18, 2026·Sep 18, 2026

4 txn

RA CAPITAL HEALTHCARE FUND LP

144

→SIONNA THERAPEUTICS, INC.

Sep 17, 2026·Sep 17, 2026

QUISEL JOHN D

→DISC MEDICINE, INC.

Sep 16, 2026·Sep 16, 2026

2 txn

BITTERMAN KEVIN

→DISC MEDICINE, INC.

Sep 15, 2026·Sep 15, 2026

10 txn

ATLAS VENTURE OPPORTUNITY FUND II, L.P.

144

→KORRO BIO, INC.

Sep 14, 2026·Sep 14, 2026

-19

BITTERMAN KEVIN

144

→DISC MEDICINE, INC.

Sep 11, 2026·Sep 11, 2026

Page 1 of 55 · 1,375 total

Filer	Form	Target	Filed	Activity
KERR DOUGLASCIK · 1814189	4 Trade	DYNE THERAPEUTICS, INC.CIK · 1818794	Oct 22, 2026 5d ago	2txn
BITTERMAN KEVINCIK · 1591747	4 Trade	DISC MEDICINE, INC.CIK · 1816736	Oct 21, 2026 6d ago	9txn
ATLAS VENTURE OPPORTUNITY FUND II, L.P.CIK · 1885327	144 Sale	DISC MEDICINE, INC.CIK · 1816736	Oct 21, 2026 6d ago	—
ATLAS VENTURE OPPORTUNITY FUND I, L.P.CIK · 1759241	144 Sale	DISC MEDICINE, INC.CIK · 1816736	Oct 21, 2026 6d ago	—
ATLAS VENTURE FUND X, L.P.CIK · 1628098	144 Sale	DISC MEDICINE, INC.CIK · 1816736	Oct 21, 2026 6d ago	—
ATLAS VENTURE FUND XII, L.P.CIK · 1812049	144 Sale	DISC MEDICINE, INC.CIK · 1816736	Oct 21, 2026 6d ago	—
ATLAS VENTURE OPPORTUNITY FUND II, L.P.CIK · 1885327	144 Sale	DISC MEDICINE, INC.CIK · 1816736	Oct 20, 2026 Oct 20, 2026	—
ATLAS VENTURE OPPORTUNITY FUND I, L.P.CIK · 1759241	144 Sale	DISC MEDICINE, INC.CIK · 1816736	Oct 20, 2026 Oct 20, 2026	—
ATLAS VENTURE FUND X, L.P.CIK · 1628098	144 Sale	DISC MEDICINE, INC.CIK · 1816736	Oct 20, 2026 Oct 20, 2026	—
ATLAS VENTURE FUND XII, L.P.CIK · 1812049	144 Sale	DISC MEDICINE, INC.CIK · 1816736	Oct 20, 2026 Oct 20, 2026	—
ATLAS VENTURE OPPORTUNITY FUND II, L.P.CIK · 1885327	144 Sale	DISC MEDICINE, INC.CIK · 1816736	Oct 19, 2026 Oct 19, 2026	—
ATLAS VENTURE OPPORTUNITY FUND I, L.P.CIK · 1759241	144 Sale	DISC MEDICINE, INC.CIK · 1816736	Oct 19, 2026 Oct 19, 2026	—
ATLAS VENTURE FUND X, L.P.CIK · 1628098	144 Sale	DISC MEDICINE, INC.CIK · 1816736	Oct 19, 2026 Oct 19, 2026	—
ATLAS VENTURE FUND XII, L.P.CIK · 1812049	144 Sale	DISC MEDICINE, INC.CIK · 1816736	Oct 19, 2026 Oct 19, 2026	—
MORRISON JODIE POPECIK · 1618247	4 Trade	Q32 BIO INC.CIK · 1661998	Oct 14, 2026 Oct 14, 2026	1txn
KALOWSKI LEECIK · 1618273	4 Trade	Q32 BIO INC.CIK · 1661998	Oct 14, 2026 Oct 14, 2026	1txn
POSNER BRIAN SCIK · 1372455	4 Trade	DYNE THERAPEUTICS, INC.CIK · 1818794	Oct 6, 2026 Oct 6, 2026	1txn
RA CAPITAL MANAGEMENT, L.P.CIK · 1346824	4 Trade	SIONNA THERAPEUTICS, INC.CIK · 2036042	Sep 21, 2026 Sep 21, 2026	5txn
RIDLOFF ELENACIK · 1772518	4 Trade	SIONNA THERAPEUTICS, INC.CIK · 2036042	Sep 18, 2026 Sep 18, 2026	4txn
CLOONAN MICHAELCIK · 1704336	4 Trade	SIONNA THERAPEUTICS, INC.CIK · 2036042	Sep 18, 2026 Sep 18, 2026	4txn
RA CAPITAL HEALTHCARE FUND LPCIK · 1315082	144 Sale	SIONNA THERAPEUTICS, INC.CIK · 2036042	Sep 17, 2026 Sep 17, 2026	—
QUISEL JOHN DCIK · 1586788	4 Trade	DISC MEDICINE, INC.CIK · 1816736	Sep 16, 2026 Sep 16, 2026	2txn
BITTERMAN KEVINCIK · 1591747	4 Trade	DISC MEDICINE, INC.CIK · 1816736	Sep 15, 2026 Sep 15, 2026	10txn
ATLAS VENTURE OPPORTUNITY FUND II, L.P.CIK · 1885327	144 Sale	KORRO BIO, INC.CIK · 1703647	Sep 14, 2026 Sep 14, 2026	—
BITTERMAN KEVINCIK · 1591747	144 Sale	DISC MEDICINE, INC.CIK · 1816736	Sep 11, 2026 Sep 11, 2026	—

Page 1 of 55 · 1,375 total