Flagship Ventures Fund V, L.P. - 29 Dec 2024 SCHEDULE 13D/A Report for OMEGA THERAPEUTICS, INC. Common Stock, $0.001 par value per share (OMGAQ)

Filing Manager
Flagship Ventures Fund V, L.P.
Reporting Manager
Noubar Afeyan
Security
OMEGA THERAPEUTICS, INC. Common Stock, $0.001 par value per share
Symbol
OMGAQ
Shares outstanding
55,351,475 shares
Disclosed Ownership
29,225,579 shares
Ownership
53%
Form type
SCHEDULE 13D/A
Filing time
31 Dec 2024, 17:37:22 UTC
Date of event
29 Dec 2024
SEC
View on sec.gov

Reporting Managers (17)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Flagship V VentureLabs Rx Fund, L.P. 2% 1,088,470 0 1,088,470 /s/ Noubar B. Afeyan, Ph.D. Noubar B. Afeyan, Ph.D., Manager of General Partner 0001724939
Flagship Ventures Fund V, L.P. 11% 5,896,386 0 5,896,386 /s/ Noubar B. Afeyan, Ph.D. Noubar B. Afeyan, Ph.D., Manager of General Partner 0001627639
Flagship Ventures Fund V General Partner LLC 13% 6,984,856 0 6,984,856 /s/ Noubar B. Afeyan, Ph.D. Noubar B. Afeyan, Ph.D., Manager 0001724575
Flagship Pioneering Fund VI, L.P. 16% 8,617,413 0 8,617,413 /s/ Noubar B. Afeyan, Ph.D. Noubar B. Afeyan, Ph.D., Chief Executive Officer of Manager of General Partner 0001716926
Flagship Pioneering Fund VI General Partner LLC 1.8% 8,617,413 0 8,617,413 /s/ Noubar B. Afeyan, Ph.D. Noubar B. Afeyan, Ph.D., Chief Executive Officer of Manager 0001724957
Nutritional Health LTP Fund, L.P. 1.8% 970,588 0 970,588 /s/ Noubar B. Afeyan, Ph.D. Noubar B. Afeyan, Ph.D., Chief Executive Officer of Manager of General Partner 0001780956
Nutritional Health LTP Fund General Partner LLC 1.8% 970,588 0 970,588 /s/ Noubar B. Afeyan, Ph.D. Noubar B. Afeyan, Ph.D., Chief Executive Officer of Manager 0001780951
Flagship Pioneering Special Opportunities Fund II, L.P. 14% 7,508,693 0 7,508,693 /s/ Noubar B. Afeyan, Ph.D. Noubar B. Afeyan, Ph.D., Chief Executive Officer of Manager of General Partner 0001760283
Flagship Pioneering Special Opportunities Fund II General Partner LLC 14% 7,508,693 0 7,508,693 /s/ Noubar B. Afeyan, Ph.D. Noubar B. Afeyan, Ph.D., Chief Executive Officer of Manager 0001826217
FPN, L.P. 2.9% 1,617,646 0 1,617,646 /s/ Noubar B. Afeyan, Ph.D. Noubar B. Afeyan, Ph.D., Chief Executive Officer of Manager of General Partner 0001860062
FPN General Partner LLC 2.9% 1,617,646 0 1,617,646 /s/ Noubar B. Afeyan, Ph.D. Noubar B. Afeyan, Ph.D., Chief Executive Officer of Manager 0001860059
Flagship VentureLabs V, LLC 4% 2,197,059 0 2,197,059 /s/ Noubar B. Afeyan, Ph.D. Noubar B. Afeyan, Ph.D., Chief Executive Officer of Manager of General Partner 0001724959
Flagship VentureLabs V Manager LLC 4% 2,197,059 0 2,197,059 /s/ Noubar B. Afeyan, Ph.D. Noubar B. Afeyan, Ph.D., Chief Executive Officer of Manager 0001768987
Flagship Pioneering Fund VII, L.P. 2.4% 1,329,324 0 1,329,324 /s/ Noubar B. Afeyan, Ph.D. Noubar B. Afeyan, Ph.D., Chief Executive Officer of Manager of General Partner 0001805916
Flagship Pioneering Fund VII General Partner LLC 2.4% 1,329,324 0 1,329,324 /s/ Noubar B. Afeyan, Ph.D. Noubar B. Afeyan, Ph.D., Chief Executive Officer of Manager 0001805917
Flagship Pioneering, Inc. 40% 22,240,723 0 22,240,723 /s/ Noubar B. Afeyan, Ph.D. Noubar B. Afeyan, Ph.D., Chief Executive Officer 0001400240
Noubar Afeyan 53% 29,225,579 0 29,225,579 /s/ Noubar B. Afeyan, Ph.D. Noubar B. Afeyan, Ph.D. 0001222012