Flagship Pioneering, LLC

Insider Reports History

Identity Names, identifiers, and filing context for this profile. 1 identity field
Reporting-owner location
Cambridge, MA
SEC source record Original filing metadata and source links for verification. 1 source field
Latest reporting-owner signature
Flagship Pioneering, LLC, By: /s/ Noubar B. Afeyan, Ph.D., Title: Sole Member and Manager of Manager
Source: Latest parsed Forms 3/4/5 signature
Source evidence Original filing metadata and source links for verification. 1 source field
Transaction source note
Rows are grouped by transaction date from the original SEC filing. Open the aggregated insider activity page to review issuer-level activity across dates.

Reported holdings for Flagship Pioneering, LLC

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

Sana Biotechnology, Inc.

Security class
Common Stock
Shares / value
8,615,337
Estimated value
$34,472,548
Report date
13 Sep 2023
Price
$4.00
Ownership
By Flagship VentureLabs V, LLC
Form 4 holding 10%+ Owner

Sana Biotechnology, Inc.

Security class
Common Stock
Shares / value
8,057,470
Estimated value
$32,240,355
Report date
13 Sep 2023
Price
$4.00
Ownership
By Flagship Ventures Fund V, L.P.
Form 4 holding 10%+ Owner

Sana Biotechnology, Inc.

Security class
Common Stock
Shares / value
7,293,841
Estimated value
$29,184,846
Report date
13 Sep 2023
Price
$4.00
Ownership
By Flagship Pioneering Fund VI, 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 Director, 10%+ Owner

Foghorn Therapeutics Inc.

Security class
Pre-Funded Warrants to purchase Common Stock
Shares / value
2,235,468
Estimated value
$14,999,766
Report date
13 Jan 2026
Price
$6.71
Ownership
By Flagship Pioneering Fund VII, L.P.
Underlying class
Common Stock
Underlying amount
Form 4 holding 10%+ Owner

Sana Biotechnology, Inc.

Security class
Pre-Funded Warrants to purchase Common Stock
Shares / value
2,727,272
Estimated value
$14,999,723
Report date
12 Feb 2024
Price
$5.50
Ownership
By Flagship Pioneering Fund VII, L.P.
Underlying class
Common Stock
Underlying amount
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

Sana Biotechnology, Inc.

Security class
Common Stock
Shares / value
1,035,208
Estimated value
$4,142,178
Report date
13 Sep 2023
Price
$4.00
Ownership
By Flagship V VentureLabs Rx Fund, L.P.
Form 4 holding 10%+ Owner

Sana Biotechnology, Inc.

Security class
Common Stock
Shares / value
581,695
Estimated value
$2,327,536
Report date
13 Sep 2023
Price
$4.00
Ownership
Indirect
Form 4 holding 10%+ Owner

Axcella Health Inc.

Security class
Common Stock
Shares / value
3,048,780
Estimated value
$1,768,292
Report date
13 Oct 2022
Price
$0.5800
Ownership
By FPA, L.P.
Form 4 holding Director, 10%+ Owner

Foghorn Therapeutics Inc.

Security class
Series 1 Warrants to purchase Common Stock
Shares / value
1,117,734
Estimated value
Report date
13 Jan 2026
Price
Ownership
By Flagship Pioneering Fund VII, L.P.
Underlying class
Common Stock
Underlying amount
Form 4 holding Director, 10%+ Owner

Foghorn Therapeutics Inc.

Security class
Series 2 Warrants to purchase Common Stock
Shares / value
1,117,734
Estimated value
Report date
13 Jan 2026
Price
Ownership
By Flagship Pioneering Fund VII, L.P.
Underlying class
Common Stock
Underlying amount
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
Form 4 holding 10%+ Owner

Sana Biotechnology, Inc.

Security class
Common Stock
Shares / value
0
Estimated value
Report date
13 Sep 2023
Price
$4.00
Ownership
By Flagship Pioneering Fund VI General Partner LLC
Form 4 holding 10%+ Owner

Sana Biotechnology, Inc.

Security class
Common Stock
Shares / value
0
Estimated value
Report date
13 Sep 2023
Price
$4.00
Ownership
By Flagship Ventures Fund V General Partner LLC

Insider Reports Filed by Flagship Pioneering, LLC

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