Vault-13

GENERATE BIOMEDICINES INC GENB

COM SHS · Common Stock · CUSIP 370920100

86 institutional holders +29 vs Q1 2026
100,007,531100.0m shares reported held*
77.9% of all shares outstanding*
$1.7bnreported value*
41 new 24 added 10 reduced 13 sold out net bought ≈ $86.5m (+5.1m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($644.4k this quarter). Holder counts are more reliable. Shares outstanding: 128.4m as of 2026-07-29, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $16.87.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

050100Q1 26: 57Q2 26: 8686Q1 26Q2 26
Numbers
QuarterHolders
Q1 202657
Q2 202686

Calls vs puts

Options held, notional value, last 4 quarters. P/C = puts ÷ calls

CallsPuts
$0$50k$100k$150k$200kQ3 25 calls: $0Q3 25 puts: $0Q3 25P/C —Q4 25 calls: $0Q4 25 puts: $0Q4 25P/C —Q1 26 calls: $157.1kQ1 26 puts: $0Q1 26P/C 0.00Q2 26 calls: $0Q2 26 puts: $0Q2 26P/C —
Numbers
QuarterCallsPutsP/C
Q3 2025$0$0—
Q4 2025$0$0—
Q1 2026$157.1k$00.00
Q2 2026$0$0—

Biggest buyers

BlackRock, Inc. New +1,659,966+1.7m
Deep Track Capital, LP New +1,333,815+1.3m
FMR LLC Added +1,004,075+1.0m
VANGUARD CAPITAL MANAGEMENT LLC Added +1,001,431+1.0m
ARK Investment Management LLC Added +786,209+786.2k
GEODE CAPITAL MANAGEMENT, LLC Added +616,760+616.8k
STATE STREET CORP New +526,565+526.6k
Davern Capital Partners, LP Added +232,879+232.9k
CHARLES SCHWAB INVESTMENT MANAGEMENT INC New +224,602+224.6k
Capital World Investors Added +211,483+211.5k

Biggest sellers

JPMORGAN CHASE & CO Reduced -1,537,610-1.5m
Alyeska Investment Group, L.P. Sold out -500,000-500.0k
MILLENNIUM MANAGEMENT LLC Reduced -354,967-355.0k
ExodusPoint Capital Management, LP Sold out -311,986-312.0k
BRAIDWELL LP Reduced -309,155-309.2k
GOLDMAN SACHS GROUP INC Reduced -159,512-159.5k
CenterBook Partners LP Reduced -135,253-135.3k
JANE STREET GROUP, LLC Sold out -123,371-123.4k
SILVERARC CAPITAL MANAGEMENT, LLC Sold out -100,000-100.0k
D. E. Shaw & Co., Inc. Sold out -95,000-95.0k

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Flagship Pioneering, LLC 13G · exempt (held before listing) new · filed 2026-05-15 48.9% new 62.7m≈ $1.1bn 2026-05-15
Nally Michael 13G · exempt (held before listing) new · filed 2026-05-15 5.2% new 6.9m≈ $116.7m 2026-05-15

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
505Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 0 sellingQ1 25Q2 25: 0 buyingQ2 25: 0 sellingQ3 25: 0 buyingQ3 25: 0 sellingQ3 25Q4 25: 0 buyingQ4 25: 0 sellingQ1 26: 5 buyingQ1 26: 0 sellingQ1 26Q2 26: 0 buyingQ2 26: 0 sellingQ3 26: 0 buyingQ3 26: 1 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20250—0——
Q2 20250—0——
Q3 20250—0——
Q4 20250—0——
Q1 20265$75.3m0——
Q2 20260—0——
Q3 20260—1$16.0k$16.0k
DateInsiderTradeSharesPrice ValueTheir holding
2026-09-01 ARNOLD FRANCES Director Sold plan 1,000 $16.00 $16.0k1.0k shares -<1%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Flagship Pioneering, LLC 68.66% of their portfolio CAMBRIDGE, MA 62,673,11762.7m $1.1bn $1.1bn 68.66% Unchanged
2 FMR LLC 0.00% of their portfolio BOSTON, MA 5,221,5995.2m $88.1m $88.1m 0.00% Added +1.0m +1,004,075
3 Capital World Investors 0.01% of their portfolio LOS ANGELES, CA 4,215,6324.2m $71.1m $71.1m 0.01% Added +211.5k +211,483
4 BRAIDWELL LP 2.05% of their portfolio STAMFORD, CT 3,283,8443.3m $55.4m $55.4m 2.05% Reduced -309.2k -309,155
5 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 2,156,6272.2m $36.4m $36.4m 0.00% Added +47.0k +46,994
6 NORGES BANK 0.00% of their portfolio OSLO, Q8 2,094,6162.1m $35.3m $35.3m 0.00% Not comparable
7 ARCH Venture Management, LLC 2.98% of their portfolio CHICAGO, IL 1,944,4261.9m $32.8m $32.8m 2.98% Unchanged
8 HarbourVest Partners LLC 17.09% of their portfolio Boston, MA 1,722,2101.7m $29.1m $29.1m 17.09% Unchanged
9 BlackRock, Inc. 0.00% of their portfolio New York, NY 1,659,9661.7m $28.0m $28.0m 0.00% New
10 BAKER BROS. ADVISORS LP 0.12% of their portfolio NEW YORK, NY 1,423,6021.4m $24.0m $24.0m 0.12% Unchanged
11 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 1,409,6491.4m $23.8m $23.8m 0.00% Reduced -1.5m -1,537,610
12 Deep Track Capital, LP 0.33% of their portfolio GREENWICH, CT 1,333,8151.3m $22.5m $22.5m 0.33% New
13 ARK Investment Management LLC 0.14% of their portfolio ST. PETERSBURG, FL 1,284,6171.3m $21.7m $21.7m 0.14% Added +786.2k +786,209
14 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 1,132,7501.1m $19.1m $19.1m 0.00% Added +1.0m +1,001,431
15 HARVARD MANAGEMENT CO INC 0.44% of their portfolio BOSTON, MA 1,111,1001.1m $18.7m $18.7m 0.44% Unchanged
16 NVIDIA CORP 0.02% of their portfolio SANTA CLARA, CA 833,325833.3k $14.1m $14.1m 0.02% Unchanged
17 Davern Capital Partners, LP 2.37% of their portfolio NY, NY 824,679824.7k $13.9m $13.9m 2.37% Added +232.9k +232,879
18 Siren, L.L.C. 0.25% of their portfolio New York, NY 736,104736.1k $12.4m $12.4m 0.25% Unchanged
19 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 735,003735.0k $12.4m $12.4m 0.00% Added +616.8k +616,760
20 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 526,565526.6k $8.9m $8.9m 0.00% New
21 Affinity Asset Advisors, LLC 0.33% of their portfolio NEW YORK, NY 400,000400.0k $6.7m $6.7m 0.33% Added +50.0k +50,000
22 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 377,994378.0k $6.4m $6.4m 0.00% Added +40.7k +40,692
23 UBS Group AG 0.00% of their portfolio ZURICH, V8 326,273326.3k $5.5m $5.5m 0.00% Reduced -30.4k -30,431
24 SPHERA FUNDS MANAGEMENT LTD. 0.59% of their portfolio TEL AVIV, L3 245,000245.0k $4.1m $4.1m 0.59% Added +60.0k +60,000
25 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 224,602224.6k $3.8m $3.8m 0.00% New
26 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 197,543197.5k $3.3m $3.3m 0.00% New
27 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 175,356175.4k $3.0m $3.0m 0.00% Added +157.9k +157,900
28 VANGUARD PORTFOLIO MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 167,285167.3k $2.8m $2.8m 0.00% New
29 CenterBook Partners LP 0.11% of their portfolio GREENWICH, CT 131,560131.6k $2.2m $2.2m 0.11% Reduced -135.3k -135,253
30 ALPS ADVISORS INC 0.01% of their portfolio Denver, CO 129,406129.4k $2.2m $2.2m 0.01% New
31 SEVEN GRAND MANAGERS, LLC 0.08% of their portfolio BRONXVILLE, NY 125,000125.0k $2.1m $2.1m 0.08% Unchanged
32 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 116,902116.9k $2.0m $2.0m 0.00% Added +46.0k +46,008
33 LMR Partners LLP 0.01% of their portfolio LONDON, X0 100,000100.0k $1.7m $1.7m 0.01% Unchanged
34 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 91,10091.1k $1.5m $1.5m 0.00% Added +3.8k +3,765
35 MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio Toronto, A6 84,80384.8k $1.4m $1.4m 0.00% Added +10.5k +10,491
36 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 57,32657.3k $967.1k $967.1k 0.00% New
37 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 55,43055.4k $935.1k $935.1k 0.00% Added +21.2k +21,234
38 TD Asset Management Inc 0.00% of their portfolio Toronto, A6 50,74850.7k $856.1k $856.1k 0.00% Added +7.9k +7,882
39 Nuveen, LLC 0.00% of their portfolio CHARLOTTE, NC 44,47044.5k $750.2k $750.2k 0.00% New
40 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 39,68539.7k $669.5k $669.5k 0.00% New
41 Sumitomo Mitsui Trust Group, Inc. 0.00% of their portfolio CHIYODA-KU, TOKYO, M0 38,66538.7k $652.3k $652.3k 0.00% Reduced -1.7k -1,679
42 Amova Asset Management Americas, Inc. 0.01% of their portfolio New York, NY 38,21838.2k $644.4k $644.4k 0.01% Reduced -2.1k -2,126
43 IQ EQ FUND MANAGEMENT (IRELAND) Ltd 0.04% of their portfolio DUBLIN 2, L2 37,22637.2k $628.0k $628.0k 0.04% Added +18.0k +18,023
44 Quadrature Capital Ltd 0.00% of their portfolio LONDON, X0 31,51031.5k $531.6k $531.6k 0.00% New
45 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 31,40631.4k $529.8k $529.8k 0.00% Reduced -5.8k -5,797
46 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 30,64830.6k $517.0k $517.0k 0.00% New
47 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 30,58730.6k $516.0k $516.0k 0.00% Added +28.3k +28,343
48 Virtus Investment Advisers, LLC 0.10% of their portfolio HARTFORD, CT 26,43026.4k $445.9k $445.9k 0.10% New
49 XTX Topco Ltd 0.01% of their portfolio LONDON, X0 24,95625.0k $421.0k $421.0k 0.01% New
50 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 24,13524.1k $407.2k $407.2k 0.00% New
51 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 23,30223.3k $393.1k $393.1k 0.00% Added +22.1k +22,102
52 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 22,65022.6k $382.1k $382.1k 0.00% New
53 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 21,92621.9k $369.9k $369.9k 0.00% Reduced -355.0k -354,967
54 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 18,37418.4k $310.0k $310.0k 0.00% New
55 Magnus Financial Group LLC 0.02% of their portfolio NEW YORK, NY 15,60015.6k $263.2k $263.2k 0.02% New
56 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 14,84114.8k $250.4k $250.4k 0.00% New
57 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 13,08713.1k $220.8k $220.8k 0.00% New
58 AXQ CAPITAL, LP 0.02% of their portfolio JERSEY CITY, NJ 12,94612.9k $218.4k $218.4k 0.02% New
59 SEI INVESTMENTS CO 0.00% of their portfolio OAKS, PA 12,08812.1k $203.9k $203.9k 0.00% New
60 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 11,62211.6k $196.1k $196.1k 0.00% New
61 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.00% of their portfolio CAUSEWAY BAY, K3 11,19311.2k $188.8k $188.8k 0.00% New
62 Parallel Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 11,19111.2k $188.8k $188.8k 0.00% Added +5.6k +5,641
63 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 11,18311.2k $188.7k $188.7k 0.00% Reduced -159.5k -159,512
64 Vanguard Global Advisers, LLC 0.00% of their portfolio MALVERN, PA 11,08811.1k $187.1k $187.1k 0.00% Added +9.9k +9,863
65 SG Americas Securities, LLC 0.00% of their portfolio NEW YORK, NY 9,2779.3k $157.0k $157.0k 0.00% New
66 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 8,6008.6k $145.1k $145.1k 0.00% New
67 Police & Firemen's Retirement System of New Jersey 0.00% of their portfolio TRENTON, NJ 7,2007.2k $121.5k $121.5k 0.00% New
68 FEDERATED HERMES, INC. 0.00% of their portfolio PITTSBURGH, PA 5,0005.0k $84.3k $84.3k 0.00% Reduced -25.0k -25,000
69 ALBION FINANCIAL GROUP /UT 0.00% of their portfolio SALT LAKE CITY, UT 4,8544.9k $81.9k $81.9k 0.00% Unchanged
70 STRS OHIO 0.00% of their portfolio COLUMBUS, OH 4,8004.8k $81.0k $81.0k 0.00% New
71 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 3,8003.8k $64.1k $64.1k 0.00% New
72 Legal & General Group Plc 0.00% of their portfolio London, X0 2,3742.4k $40.0k $40.0k 0.00% New
73 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 2,2152.2k $37.4k $37.4k 0.00% New
74 Russell Investments Group, Ltd. 0.00% of their portfolio Seattle, WA 1,9522.0k $32.9k $32.9k 0.00% New
75 State of Wyoming 0.00% of their portfolio CHEYENNE, WY 1,4071.4k $23.7k $23.7k 0.00% New
76 STANCE CAPITAL LLC 0.01% of their portfolio BOSTON, MA 1,3841.4k $23.3k $23.3k 0.01% New
77 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 1,3811.4k $23.0k $23.0k 0.00% Added +1.1k +1,150
78 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 1,0141.0k $17.1k $17.1k 0.00% Added +1.0k +1,013
79 TD Waterhouse Canada Inc. 0.00% of their portfolio TORONTO, A6 573573 $9.5k $9.5k 0.00% New
80 Benson Wealth Management INC 0.01% of their portfolio OOLTEWAH, TN, TN 363363 $6.1k $6.1k 0.01% New
81 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 336336 $5.7k $5.7k 0.00% New
82 Sterling Capital Management LLC 0.00% of their portfolio CHARLOTTE, NC 212212 $3.6k $3.6k 0.00% New
83 JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio DES PERES, MO 200200 $3.3k $3.3k 0.00% New
84 Avion Wealth 0.00% of their portfolio THE WOODLANDS, TX 200200 $3.0k $3.0k 0.00% Added +100 +100
85 HOLLENCREST CAPITAL MANAGEMENT 0.00% of their portfolio NEWPORT BEACH, CA 55 $84 $84 0.00% New
86 Caitong International Asset Management Co., Ltd 0.00% of their portfolio HONG KONG, K3 11 $17 $17 0.00% New