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Generation Bio Co

GBIO
5.540USD
+0.090+1.65%
Close 12/19, 16:00ETQuotes delayed by 15 min
37.32MMarket Cap
LossP/E TTM

Generation Bio Co

5.540
+0.090+1.65%

More Details of Generation Bio Co Company

Generation Bio Co. is a biotechnology company. The Company is engaged in developing redosable therapeutics that reprogram T cells in vivo to reduce or eliminate the production and persistence of autoreactive T cells, which erroneously recognize and attack the body’s own tissues, causing autoimmune diseases. It focuses on autoimmune targets that have been undruggable or poorly drugged selectively in T cells. Its proprietary cell-targeted lipid nanoparticle (ctLNP) technology enables selective access to T cells and precise target inhibition by siRNA to selectively modulate T cells, blocking autoimmune tissue damage while sparing the broader immune system. Its proprietary stealth technology prevents its LNP from interacting with serum-binding proteins and reduces clearance by the liver and spleen to less than 1%, enabling potency and selectivity. Its selective delivery allows it to inhibit targets in T cells while sparing critical function in other cell types.

Generation Bio Co Info

Ticker SymbolGBIO
Company nameGeneration Bio Co
IPO dateJun 12, 2020
CEOHowze (Yalonda)
Number of employees115
Security typeOrdinary Share
Fiscal year-endJun 12
Address301 Binney Street
CityCAMBRIDGE
Stock exchangeNASDAQ OMX - NASDAQ BASIC
CountryUnited States of America
Postal code02142
Phone18575295908
Websitehttps://generationbio.com/
Ticker SymbolGBIO
IPO dateJun 12, 2020
CEOHowze (Yalonda)

Company Executives of Generation Bio Co

Name
Name/Position
Position
Shareholding
Change
Dr. Cameron Geoffrey (Geoff) Mcdonough, M.D.
Dr. Cameron Geoffrey (Geoff) Mcdonough, M.D.
Chairman of the Board
Chairman of the Board
186.22K
+0.40%
Dr. Anthony G. Quinn, M.D., Ph.D.
Dr. Anthony G. Quinn, M.D., Ph.D.
Independent Director
Independent Director
37.21K
--
Mr. Gustav A. Christensen
Mr. Gustav A. Christensen
Independent Director
Independent Director
13.14K
--
Dr. Phillip Samayoa, Ph.D.
Dr. Phillip Samayoa, Ph.D.
Chief Scientific Officer
Chief Scientific Officer
13.01K
+0.62%
Ms. Yalonda Howze, J.D.
Ms. Yalonda Howze, J.D.
Interim Chief Executive Officer, President
Interim Chief Executive Officer, President
6.93K
+3.51%
Dr. Catherine Stehman-Breen, M.D.
Dr. Catherine Stehman-Breen, M.D.
Independent Director
Independent Director
4.75K
--
Ms. Dannielle Appelhans
Ms. Dannielle Appelhans
Independent Director
Independent Director
2.00K
+150.00%
Mr. Kevin John Conway
Mr. Kevin John Conway
Chief Financial Officer, Treasurer
Chief Financial Officer, Treasurer
1.87K
+2.19%
Mr. Ronald Harold Wilfred (Ron) Cooper
Mr. Ronald Harold Wilfred (Ron) Cooper
Independent Director
Independent Director
950.00
--
Dr. Jeffrey M. (Jeff) Jonas, M.D.
Dr. Jeffrey M. (Jeff) Jonas, M.D.
Independent Director
Independent Director
--
--
View more
Name
Name/Position
Position
Shareholding
Change
Dr. Cameron Geoffrey (Geoff) Mcdonough, M.D.
Dr. Cameron Geoffrey (Geoff) Mcdonough, M.D.
Chairman of the Board
Chairman of the Board
186.22K
+0.40%
Dr. Anthony G. Quinn, M.D., Ph.D.
Dr. Anthony G. Quinn, M.D., Ph.D.
Independent Director
Independent Director
37.21K
--
Mr. Gustav A. Christensen
Mr. Gustav A. Christensen
Independent Director
Independent Director
13.14K
--
Dr. Phillip Samayoa, Ph.D.
Dr. Phillip Samayoa, Ph.D.
Chief Scientific Officer
Chief Scientific Officer
13.01K
+0.62%
Ms. Yalonda Howze, J.D.
Ms. Yalonda Howze, J.D.
Interim Chief Executive Officer, President
Interim Chief Executive Officer, President
6.93K
+3.51%
Dr. Catherine Stehman-Breen, M.D.
Dr. Catherine Stehman-Breen, M.D.
Independent Director
Independent Director
4.75K
--

Revenue Breakdown

FY2024
FY2023
Relevant data have not been disclosed by the company yet.
By RegionUSD
Name
Revenue
Proportion
United States
19.89M
0.00%
By Business
By Region
Relevant data have not been disclosed by the company yet.

Shareholding Stats

Updated: Mon, Nov 17
Updated: Mon, Nov 17
Shareholders
Shareholder Types
Shareholders
Shareholders
Proportion
Atlas Venture
12.29%
Modernatx Inc
8.70%
T. Rowe Price Associates, Inc.
8.32%
SymBiosis Capital Management, LLC
6.26%
Renaissance Technologies LLC
5.11%
Other
59.33%
Shareholders
Shareholders
Proportion
Atlas Venture
12.29%
Modernatx Inc
8.70%
T. Rowe Price Associates, Inc.
8.32%
SymBiosis Capital Management, LLC
6.26%
Renaissance Technologies LLC
5.11%
Other
59.33%
Shareholder Types
Shareholders
Proportion
Investment Advisor
23.52%
Venture Capital
18.72%
Hedge Fund
11.03%
Corporation
8.70%
Investment Advisor/Hedge Fund
6.62%
Individual Investor
5.55%
Research Firm
5.49%
Other
20.37%

Institutional Shareholding

Updated: Mon, Dec 8
Updated: Mon, Dec 8
Reporting Period
No. of institutions
Shares Held
Proportion
Change
2025Q4
167
4.19M
83.49%
--
2025Q3
183
4.19M
91.65%
-1.41K
2025Q2
190
4.19M
92.88%
-658.30K
2025Q1
195
4.85M
97.87%
-1.71M
2024Q4
218
5.46M
97.22%
-137.93K
2024Q3
232
5.60M
98.15%
-24.80K
2024Q2
237
5.63M
99.14%
+61.28K
2024Q1
240
5.57M
97.32%
-903.46K
2023Q4
246
5.31M
94.85%
-454.75K
2023Q3
245
5.76M
97.17%
-8.60K
View more

Shareholder Activity

Name
Shares Held
Proportion
Change
Chg %
Date
Atlas Venture
827.95K
12.29%
--
--
Jun 30, 2025
Modernatx Inc
585.94K
8.7%
--
--
Apr 07, 2025
T. Rowe Price Associates, Inc.
829.98K
12.32%
-58.09K
-6.54%
Jun 30, 2025
Renaissance Technologies LLC
258.08K
3.83%
+70.01K
+37.23%
Jun 30, 2025
Invus Public Equities Advisors, LLC
296.89K
4.41%
--
--
Jun 30, 2025
The Vanguard Group, Inc.
229.84K
3.41%
-32.14K
-12.27%
Jun 30, 2025
Baker Bros. Advisors LP
194.50K
2.89%
--
--
Jun 30, 2025
McDonough (Cameron Geoffrey)
185.48K
2.75%
+372.00
+0.20%
Jul 15, 2025
View more

Related ETFs

Updated: Sat, Dec 6
Updated: Sat, Dec 6
Name
Proportion
Global X Russell 2000 Covered Call ETF
0%
Invesco RAFI US 1500 Small-Mid ETF
0%
Global X Russell 2000 ETF
0%
ProShares UltraPro Russell2000
0%
Avantis US Small Cap Equity ETF
0%
iShares Russell 3000 ETF
0%
Schwab U.S. Small-Cap ETF
0%
ProShares Hedge Replication ETF
0%
iShares Micro-Cap ETF
0%
iShares Russell 2000 ETF
0%
View more
Global X Russell 2000 Covered Call ETF
Proportion0%
Invesco RAFI US 1500 Small-Mid ETF
Proportion0%
Global X Russell 2000 ETF
Proportion0%
ProShares UltraPro Russell2000
Proportion0%
Avantis US Small Cap Equity ETF
Proportion0%
iShares Russell 3000 ETF
Proportion0%
Schwab U.S. Small-Cap ETF
Proportion0%
ProShares Hedge Replication ETF
Proportion0%
iShares Micro-Cap ETF
Proportion0%
iShares Russell 2000 ETF
Proportion0%

Dividend

A total of 0.00 USD has been distributed in dividends over the past 5 years.
Date
Dividend
Record Date
Payment Date
Ex-dividend Date
No Data

Stock Split

Date
Type
Ratio
Jul 18, 2025
Merger
10→1
Date
Type
Ratio
Jul 18, 2025
Merger
10→1

FAQs

Who are the top five shareholders of Generation Bio Co?

The top five shareholders of Generation Bio Co are:
Atlas Venture holds 827.95K shares, accounting for 12.29% of the total shares.
Modernatx Inc holds 585.94K shares, accounting for 8.70% of the total shares.
T. Rowe Price Associates, Inc. holds 829.98K shares, accounting for 12.32% of the total shares.
Renaissance Technologies LLC holds 258.08K shares, accounting for 3.83% of the total shares.
Invus Public Equities Advisors, LLC holds 296.89K shares, accounting for 4.41% of the total shares.

What are the top three shareholder types of Generation Bio Co?

The top three shareholder types of Generation Bio Co are:
Atlas Venture
Modernatx Inc
T. Rowe Price Associates, Inc.

How many institutions hold shares of Generation Bio Co (GBIO)?

As of 2025Q4, 167 institutions hold shares of Generation Bio Co, with a combined market value of approximately 4.19M, accounting for 83.49% of the total shares. Compared to 2025Q3, institutional shareholding has increased by -8.16%.

What is the biggest source of revenue for Generation Bio Co?

In FY2024, the -- business generated the highest revenue for Generation Bio Co, amounting to -- and accounting for --% of total revenue.
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