Flagship Pioneering, LLC - 10%+ Owner at Omega Therapeutics, Inc.

Issuer-level insider activity

Role: 10%+ Owner
Issuer ticker: OMGA
Entity type: Company
Source filing history: Open source filing history

No buys or sells have been reported by Flagship Pioneering, LLC since 28 Sep 2025

Reported holdings for Flagship Pioneering, LLC in Omega Therapeutics, Inc.

Form 4 holding 10%+ Owner

Omega Therapeutics, Inc.

Security class: Common Stock
Shares / value: 8,617,413
Estimated value: $68,939,304
Report date: 27 Feb 2023
Price: $8.00
Ownership: By Flagship Pioneering Fund VI, L.P.

Form 4 holding 10%+ Owner

Omega Therapeutics, Inc.

Security class: Common Stock
Shares / value: 7,508,693
Estimated value: $60,069,544
Report date: 27 Feb 2023
Price: $8.00
Ownership: By Flagship Pioneering Special Opportunities Fund II, L.P.

Form 4 holding 10%+ Owner

Omega Therapeutics, Inc.

Security class: Common Stock
Shares / value: 5,896,386
Estimated value: $47,171,088
Report date: 27 Feb 2023
Price: $8.00
Ownership: By Flagship Ventures Fund V, L.P.

Form 4 holding 10%+ Owner

Omega Therapeutics, Inc.

Security class: Common Stock
Shares / value: 2,197,059
Estimated value: $17,576,472
Report date: 27 Feb 2023
Price: $8.00
Ownership: By Flagship VentureLabs V, LLC

Form 4 holding 10%+ Owner

Omega Therapeutics, Inc.

Security class: Common Stock
Shares / value: 1,617,646
Estimated value: $12,941,168
Report date: 27 Feb 2023
Price: $8.00
Ownership: By FPN, L.P.

Form 4 holding 10%+ Owner

Omega Therapeutics, Inc.

Security class: Common Stock
Shares / value: 1,617,646
Estimated value: $12,941,168
Report date: 03 Aug 2021
Price: $8.00
Ownership: Indirect

Form 4 holding 10%+ Owner

Omega Therapeutics, Inc.

Security class: Common Stock
Shares / value: 1,329,324
Estimated value: $10,634,592
Report date: 27 Feb 2023
Price: $8.00
Ownership: By Flagship Pioneering Fund VII, L.P.

Form 4 holding 10%+ Owner

Omega Therapeutics, Inc.

Security class: Common Stock
Shares / value: 1,088,470
Estimated value: $8,707,760
Report date: 27 Feb 2023
Price: $8.00
Ownership: By Flagship V VentureLabs Rx Fund, L.P.

Form 4 holding 10%+ Owner

Omega Therapeutics, Inc.

Security class: Common Stock
Shares / value: 970,588
Estimated value: $7,764,704
Report date: 27 Feb 2023
Price: $8.00
Ownership: By Nutritional Health LTP Fund, L.P.

Form 4 holding 10%+ Owner

Omega Therapeutics, Inc.

Security class: Series A Convertible Preferred Stock
Shares / value: 0
Estimated value
Report date: 03 Aug 2021
Price
Ownership: Indirect
Underlying class: Common Stock
Underlying amount

Form 4 holding 10%+ Owner

Omega Therapeutics, Inc.

Security class: Series B Convertible Preferred Stock
Shares / value: 0
Estimated value
Report date: 03 Aug 2021
Price
Ownership: Indirect
Underlying class: Common Stock
Underlying amount

Form 4 holding 10%+ Owner

Omega Therapeutics, Inc.

Security class: Series C Convertible Preferred Stock
Shares / value: 0
Estimated value
Report date: 03 Aug 2021
Price
Ownership: Indirect
Underlying class: Common Stock
Underlying amount

Transaction history for Flagship Pioneering, LLC in Omega Therapeutics, Inc.

Sym	Class	Transaction	%	SEC-reported value	SEC-reported price	Shares	Shares after	Date	Ownership

^* marks a reported price that did not pass the local price check.

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