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Business Summary
Filings
Ownership
Valuation
Ownership — GENB
Institutional Holdings
Insider Transactions
US Institutional Ownership
77.7%
Institution
Shares
Value
Ownership %
Change
Filing Date
Flagship Pioneering, LLC
62.67M
$1.06B
48.86%
--
2026-06-30
FMR LLC
5.22M
$88.0M
4.07%
+1.00M
2026-06-30
Capital World Investors
4.22M
$71.0M
3.29%
+211.5K
2026-06-30
BRAIDWELL LP
3.28M
$55.0M
2.56%
-309.2K
2026-06-30
PRICE T ROWE ASSOCIATES INC /MD/
2.16M
$36.0M
1.68%
+47.0K
2026-06-30
NORGES BANK
2.09M
$35.0M
1.63%
--
2026-06-30
ARCH Venture Management, LLC
1.94M
$32.0M
1.52%
--
2026-06-30
HarbourVest Partners LLC
1.72M
$29.0M
1.34%
--
2026-06-30
BlackRock, Inc.
1.66M
$28.0M
1.29%
--
2026-06-30
BAKER BROS. ADVISORS LP
1.42M
$24.0M
1.11%
--
2026-06-30
JPMORGAN CHASE & CO
1.41M
$23.0M
1.10%
--
2026-06-30
Deep Track Capital, LP
1.33M
$22.0M
1.04%
--
2026-06-30
ARK Investment Management LLC
1.28M
$21.0M
1.00%
+786.2K
2026-06-30
VANGUARD CAPITAL MANAGEMENT LLC
1.13M
$19.0M
0.88%
+1.00M
2026-06-30
HARVARD MANAGEMENT CO INC
1.11M
$18.0M
0.87%
--
2026-06-30
NVIDIA CORP
833.3K
$14.0M
0.65%
--
2026-06-30
Davern Capital Partners, LP
824.7K
$13.0M
0.64%
--
2026-06-30
Siren, L.L.C.
736.1K
$12.0M
0.57%
--
2026-06-30
GEODE CAPITAL MANAGEMENT, LLC
735.0K
$12.0M
0.57%
+616.8K
2026-06-30
STATE STREET CORP
526.6K
$8.0M
0.41%
--
2026-06-30
MORGAN STANLEY
378.0K
$6.0M
0.29%
+40.7K
2026-06-30
UBS Group AG
326.3K
$5.0M
0.25%
-30.4K
2026-06-30
SPHERA FUNDS MANAGEMENT LTD.
245.0K
$4.0M
0.19%
+60.0K
2026-06-30
Sixth Street Partners Management Company, L.P.
224.6K
$3.0M
0.18%
--
2026-06-30
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
224.6K
$3.0M
0.18%
--
2026-06-30
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