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Generation Bio Co.

GBIODelisted Feb 9, 2026
Industry
Pharmaceutical Preparations
SEC CIK
0001733294

Generation Bio Co. was delisted on Feb 9, 2026; its insiders filed their last Form 4 on Feb 9, 2026; 48 institutions reported holding it in 13F filings for Q4 2025, worth $24.5M in total; no superinvestor held it.

13F holders, Q1 2022

Institutional positions in Generation Bio Co. as of Mar 31, 2022. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
89
0 vs. Q4 2021
Shares held
56.5M
+1.50M (+2.7%) vs. Q4 2021
Total value
$415.8M
+$25.5M (+6.5%) vs. Q4 2021
New holders
14
31 more added
Sold out
14
30 more reduced

Compare with Q4 2021: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting GBIO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ1 2022: 89 institutions
Q1 2021: 88 institutionsQ2 2021: 98 institutionsQ3 2021: 82 institutionsQ4 2021: 89 institutionsQ1 2022: 89 institutionsQ2 2022: 95 institutionsQ3 2022: 115 institutionsQ4 2022: 98 institutionsQ1 2023: 86 institutionsQ2 2023: 81 institutionsQ3 2023: 77 institutionsQ4 2023: 76 institutionsQ1 2024: 77 institutionsQ2 2024: 79 institutionsQ3 2024: 77 institutionsQ4 2024: 80 institutionsQ1 2025: 81 institutionsQ2 2025: 63 institutionsQ3 2025: 41 institutionsQ4 2025: 48 institutionsQ1 2026: 2 institutionsQ2 2026: 1 institution
Value heldQ1 2022: $415.8M
Q1 2021: $1.27BQ2 2021: $1.25BQ3 2021: $1.20BQ4 2021: $390.3MQ1 2022: $415.8MQ2 2022: $363.5MQ3 2022: $306.3MQ4 2022: $224.5MQ1 2023: $246.8MQ2 2023: $315.1MQ3 2023: $216.8MQ4 2023: $86.7MQ1 2024: $223.7MQ2 2024: $156.5MQ3 2024: $136.4MQ4 2024: $57.1MQ1 2025: $19.3MQ2 2025: $13.3MQ3 2025: $24.2MQ4 2025: $24.5MQ1 2026: $53.3KQ2 2026: $0
Institutions holding GBIO and their total value by quarter
QuarterHoldersValue
Q2 20261$0
Q1 20262$53.3K
Q4 202548$24.5M
Q3 202541$24.2M
Q2 202563$13.3M
Q1 202581$19.3M
Q4 202480$57.1M
Q3 202477$136.4M
Q2 202479$156.5M
Q1 202477$223.7M
Q4 202376$86.7M
Q3 202377$216.8M
Q2 202381$315.1M
Q1 202386$246.8M
Q4 202298$224.5M
Q3 2022115$306.3M
Q2 202295$363.5M
Q1 202289$415.8M
Q4 202189$390.3M
Q3 202182$1.20B
Q2 202198$1.25B
Q1 202188$1.27B

Institutions, Q1 2022

Shares, value and share of portfolio for each institution holding Generation Bio Co.; share changes are against Q4 2021.

Institutions holding GBIO in Q1 2022
InstitutionSharesValue% of portfolioChange in sharesAction
Point72 Hong Kong Ltd0$00.00%−656−100.0%Sold out
Parallel Advisors, LLC0$00.00%−387−100.0%Sold out
Covestor Ltd0$00.00%−19−100.0%Sold out