Vault-13

PEPGEN INC PEPG

COM · Common Stock · CUSIP 713317105

72 institutional holders -22 vs Q1 2026
52,064,03852.1m shares reported held*
75.2% of all shares outstanding*
$93.7mreported value*
7 new 21 added 26 reduced 28 sold out net sold ≈ $8.1m (-4.5m 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. Holder counts are more reliable. Shares outstanding: 69.3m as of 2026-08-02, 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 ≈ $1.80. Options: 2 managers hold calls ($57.1k notional), 2 hold puts ($42.7k).

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

050100Q3 22: 43Q4 22: 47Q1 23: 46Q2 23: 45Q3 23: 44Q4 23: 43Q1 24: 57Q2 24: 62Q3 24: 63Q4 24: 62Q1 25: 73Q2 25: 53Q3 25: 73Q4 25: 88Q1 26: 94Q2 26: 7272Q3 22Q3 23Q3 24Q3 25Q2 26
Numbers
QuarterHolders
Q3 202243
Q4 202247
Q1 202346
Q2 202345
Q3 202344
Q4 202343
Q1 202457
Q2 202462
Q3 202463
Q4 202462
Q1 202573
Q2 202553
Q3 202573
Q4 202588
Q1 202694
Q2 202672

Buyers vs sellers

Managers adding to or starting a position, vs cutting or selling out

Bought or addedCut or sold out
1000100Q3 24: 31 bought or addedQ3 24: 26 cut or sold outQ4 24: 29 bought or addedQ4 24: 27 cut or sold outQ4 24Q1 25: 38 bought or addedQ1 25: 28 cut or sold outQ2 25: 22 bought or addedQ2 25: 44 cut or sold outQ2 25Q3 25: 52 bought or addedQ3 25: 31 cut or sold outQ4 25: 57 bought or addedQ4 25: 28 cut or sold outQ4 25Q1 26: 51 bought or addedQ1 26: 47 cut or sold outQ2 26: 28 bought or addedQ2 26: 54 cut or sold outQ2 26
Numbers
QuarterBought or addedCut or sold out
Q3 20243126
Q4 20242927
Q1 20253828
Q2 20252244
Q3 20255231
Q4 20255728
Q1 20265147
Q2 20262854

Calls vs puts

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

CallsPuts
$0$2m$4m$6mQ3 25 calls: $5.9mQ3 25 puts: $846.0kQ3 25P/C 0.14Q4 25 calls: $5.3mQ4 25 puts: $1.8mQ4 25P/C 0.33Q1 26 calls: $1.9mQ1 26 puts: $209.0kQ1 26P/C 0.11Q2 26 calls: $57.1kQ2 26 puts: $42.7kQ2 26P/C 0.75
Numbers
QuarterCallsPutsP/C
Q3 2025$5.9m$846.0k0.14
Q4 2025$5.3m$1.8m0.33
Q1 2026$1.9m$209.0k0.11
Q2 2026$57.1k$42.7k0.75

Biggest buyers

RENAISSANCE TECHNOLOGIES LLC Added +1,463,446+1.5m
ADAR1 Capital Management, LLC Added +983,447+983.4k
GSA CAPITAL PARTNERS LLP Added +814,566+814.6k
MARSHALL WACE, LLP Added +568,424+568.4k
CITADEL ADVISORS LLC Added +450,459+450.5k
Squarepoint Ops LLC Added +382,487+382.5k
Rosalind Advisors, Inc. New +350,000+350.0k
DIADEMA PARTNERS LP Added +222,359+222.4k
XTX Topco Ltd Added +114,196+114.2k
Persistent Asset Partners Ltd Added +56,851+56.9k

Biggest sellers

Kalehua Capital Management LLC Sold out -1,729,961-1.7m
Woodline Partners LP Sold out -1,311,021-1.3m
Pictet Asset Management Holding SA Sold out -1,306,783-1.3m
AWM Investment Company, Inc. Reduced -1,230,925-1.2m
MORGAN STANLEY Reduced -950,145-950.1k
Nantahala Capital Management, LLC Sold out -681,158-681.2k
Qube Research & Technologies Ltd Reduced -607,891-607.9k
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced -366,752-366.8k
MILLENNIUM MANAGEMENT LLC Reduced -292,378-292.4k
DIMENSIONAL FUND ADVISORS LP Reduced -162,711-162.7k

Biggest calls

SIMPLEX TRADING, LLC Added $38.7k21.5k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $18.4k10.2k shares

Biggest puts

CITADEL ADVISORS LLC Reduced $23.6k13.1k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP Reduced $19.1k10.6k shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

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
RA CAPITAL MANAGEMENT, L.P. 13D · may seek influence filed 2025-09-30 29.2% 20.1m≈ $36.2m 2025-09-30
Oxford Science Enterprises plc 13G · passive investor filed 2025-10-01 7.2% 5.0m≈ $8.9m 2025-10-01
Commodore Capital LP 13G · passive investor +1.4 pts · filed 2026-05-15 6.5% +1.4 pts 4.5m≈ $8.1m 2026-05-15
VIKING GLOBAL INVESTORS LP 13G · passive investor -0.1 pts · filed 2026-05-15 5.0% -0.1 pts 3.5m≈ $6.3m 2026-05-15

Fell to 5% or below in the last year: Point72 Asset Management, L.P. (3.0%, 2025-11-14)

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
404Q4 24: 0 buyingQ4 24: 0 sellingQ1 25: 0 buyingQ1 25: 2 sellingQ1 25Q2 25: 2 buyingQ2 25: 0 sellingQ3 25: 1 buyingQ3 25: 0 sellingQ3 25Q4 25: 0 buyingQ4 25: 0 sellingQ1 26: 0 buyingQ1 26: 3 sellingQ1 26Q2 26: 0 buyingQ2 26: 1 sellingQ3 26: 0 buyingQ3 26: 0 sellingQ3 26
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20240—0——
Q1 20250—2$5.0k—
Q2 20252$71.7k0——
Q3 20251$30.0m0——
Q4 20250—0——
Q1 20260—3$57.6k—
Q2 20260—1$1.7k—
Q3 20260—0——
DateInsiderTradeSharesPrice ValueTheir holding
2026-05-21 Kasraian Kasra Chief Technical Officer Sold 1,233 $1.41 $1.7k1.2k shares -2%

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 RA CAPITAL MANAGEMENT, L.P. 0.31% of their portfolio BOSTON, MA 20,064,54520.1m $36.1m $36.1m 0.31% Unchanged
2 Commodore Capital LP 0.48% of their portfolio NEW YORK, NY 4,475,0004.5m $8.1m $8.1m 0.48% Unchanged
3 VIKING GLOBAL INVESTORS LP 0.02% of their portfolio STAMFORD, CT 3,482,4343.5m $6.3m $6.3m 0.02% Unchanged
4 Laurion Capital Management LP 0.36% of their portfolio NEW YORK, NY 2,750,8552.8m $5.0m $5.0m 0.36% Unchanged
5 ADAR1 Capital Management, LLC 0.22% of their portfolio AUSTIN, TX 2,591,0852.6m $4.7m $4.7m 0.22% Added +983.4k +983,447
6 Vivo Capital, LLC 0.38% of their portfolio Palo Alto, CA 2,325,0002.3m $4.2m $4.2m 0.38% Unchanged
7 VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio MALVERN, PA 1,935,9201.9m $3.5m $3.5m 0.00% Reduced -1.8k -1,779
8 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 1,786,7651.8m $3.2m $3.2m 0.00% Reduced -292.4k -292,378
9 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 1,520,2461.5m $2.7m $2.7m 0.00% Added +1.5m +1,463,446
10 BlackRock, Inc. 0.00% of their portfolio New York, NY 1,304,2621.3m $2.3m $2.3m 0.00% Added +26.5k +26,478
11 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 866,992867.0k $1.6m $1.6m 0.00% Added +568.4k +568,424
12 GSA CAPITAL PARTNERS LLP 0.10% of their portfolio LONDON, X0 852,852852.9k $1.5m $1.5m 0.10% Added +814.6k +814,566
13 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 658,381658.4k $1.2m $1.2m 0.00% Added +450.5k +450,459
14 AWM Investment Company, Inc. 0.09% of their portfolio NEW YORK, NY 600,000600.0k $1.1m $1.1m 0.09% Reduced -1.2m -1,230,925
15 MONIMUS CAPITAL MANAGEMENT, LP 0.27% of their portfolio WOODBRIDGE, NJ 587,688587.7k $1.1m $1.1m 0.27% Reduced -11.0k -10,975
16 Squarepoint Ops LLC 0.00% of their portfolio NEW YORK, NY 529,083529.1k $952.3k $952.3k 0.00% Added +382.5k +382,487
17 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 523,473523.5k $942.8k $942.8k 0.00% Reduced -12.5k -12,526
18 Creek Drive Management Group LLC 0.50% of their portfolio SAN FRANCISCO, CA 450,000450.0k $810.0k $810.0k 0.50% Unchanged
19 Ikarian Capital, LLC 0.13% of their portfolio DALLAS, TX 447,165447.2k $804.9k $804.9k 0.13% Unchanged
20 DIADEMA PARTNERS LP 0.24% of their portfolio MORRISTOWN, NJ 373,284373.3k $671.9k $671.9k 0.24% Added +222.4k +222,359
21 BOOTHBAY FUND MANAGEMENT, LLC 0.01% of their portfolio NEW YORK, NY 366,141366.1k $659.1k $659.1k 0.01% Added +14.8k +14,767
22 Rosalind Advisors, Inc. 0.24% of their portfolio TORONTO, A6 350,000350.0k $630.0k $630.0k 0.24% New
23 Driehaus Capital Management LLC 0.00% of their portfolio Chicago, IL 279,909279.9k $503.8k $503.8k 0.00% Unchanged
24 Boxer Capital Management, LLC 0.04% of their portfolio San Diego, CA 272,892272.9k $491.2k $491.2k 0.04% Unchanged
25 VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio MALVERN, PA 261,476261.5k $470.7k $470.7k 0.00% Added +1.8k +1,779
26 XTX Topco Ltd 0.01% of their portfolio LONDON, X0 245,347245.3k $441.6k $441.6k 0.01% Added +114.2k +114,196
27 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 229,390229.4k $412.9k $412.9k 0.00% Unchanged
28 Artia Global Partners LP 0.07% of their portfolio MIAMI, FL 205,324205.3k $369.6k $369.6k 0.07% Unchanged
29 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 172,412172.4k $310.3k $310.3k 0.00% Reduced -25.0k -24,979
30 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 168,110168.1k $302.6k $302.6k 0.00% Added +29.5k +29,457
31 Connor, Clark & Lunn Investment Management Ltd. 0.00% of their portfolio VANCOUVER, A1 112,071112.1k $201.7k $201.7k 0.00% Added +42.9k +42,948
32 UBS Group AG 0.00% of their portfolio ZURICH, V8 110,673110.7k $199.2k $199.2k 0.00% Added +16.6k +16,643
33 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 98,73898.7k $177.7k $177.7k 0.00% Reduced -6.2k -6,161
34 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 98,58198.6k $177.4k $177.4k 0.00% Reduced -607.9k -607,891
35 RBF Capital, LLC 0.01% of their portfolio RENO, NV 95,04295.0k $171.1k $171.1k 0.01% Unchanged
36 Persistent Asset Partners Ltd 0.05% of their portfolio HONG KONG, K3 95,00395.0k $171.0k $171.0k 0.05% Added +56.9k +56,851
37 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.00% of their portfolio HOUSTON, TX 93,70093.7k $168.7k $168.7k 0.00% Added +50.0k +50,000
38 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 75,41675.4k $135.7k $135.7k 0.00% Reduced -366.8k -366,752
39 Rangeley Capital, LLC 0.12% of their portfolio NEW CANAAN, CT 70,00070.0k $126.0k $126.0k 0.12% Added +1.9k +1,904
40 Verdad Advisers, LP 0.12% of their portfolio BOSTON, MA 66,88066.9k $120.4k $120.4k 0.12% Added +12.5k +12,500
41 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 66,26866.3k $119.3k $119.3k 0.00% Reduced -115.4k -115,437
42 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 54,11354.1k $97.3k $97.3k 0.00% Reduced -162.7k -162,711
43 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 48,84248.8k $87.9k $87.9k 0.00% Reduced -950.1k -950,145
44 AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio KANSAS CITY, MO 42,60142.6k $76.7k $76.7k 0.00% Unchanged
45 Quadrature Capital Ltd 0.00% of their portfolio LONDON, X0 40,93640.9k $73.7k $73.7k 0.00% Reduced -117.9k -117,890
46 Point72 Asset Management, L.P. 0.00% of their portfolio STAMFORD, CT 39,72039.7k $71.5k $71.5k 0.00% Reduced -26.3k -26,252
47 Rathbones Group PLC 0.00% of their portfolio Liverpool, X0 32,00332.0k $57.6k $57.6k 0.00% Reduced -32.0k -32,003
48 READYSTATE ASSET MANAGEMENT LP 0.00% of their portfolio CHICAGO, IL 28,37928.4k $51.1k $51.1k 0.00% Reduced -86.7k -86,737
49 Bronte Capital Management Pty Ltd. 0.00% of their portfolio Bondi Junction, C3 17,77617.8k $32.0k $32.0k 0.00% New
50 Vanguard Global Advisers, LLC 0.00% of their portfolio MALVERN, PA 17,72317.7k $31.9k $31.9k 0.00% Unchanged
51 Vanguard Personalized Indexing Management, LLC 0.00% of their portfolio OAKLAND, CA 17,62917.6k $31.7k $31.7k 0.00% New
52 Aigen Investment Management, LP 0.01% of their portfolio NEW YORK, NY 12,87712.9k $23.2k $23.2k 0.01% New
53 China Universal Asset Management Co., Ltd. 0.00% of their portfolio SHANGHAI, F4 11,00811.0k $19.8k $19.8k 0.00% Reduced -1.2k -1,192
54 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 9,7439.7k $17.5k $17.5k 0.00% Reduced -33.8k -33,794
55 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 5,5575.6k $10.0k $10.0k 0.00% Added +17 +17
56 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 5,0565.1k $9.0k $9.0k 0.00% Reduced -129 -129
57 Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio ZURICH, V8 4,4844.5k $8.1k $8.1k 0.00% Added +2.5k +2,478
58 BARCLAYS PLC 0.00% of their portfolio LONDON, X0 4,3894.4k $7.9k $7.9k 0.00% Reduced -40.7k -40,741
59 Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio SEOUL, M5 3,0943.1k $5.6k $5.6k 0.00% Reduced -492 -492
60 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 2,6972.7k $4.9k $4.9k 0.00% Reduced -61.0k -61,035
61 FMR LLC 0.00% of their portfolio BOSTON, MA 1,6641.7k $3.0k $3.0k 0.00% Unchanged
62 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 1,6271.6k $2.9k $2.9k 0.00% Reduced -879 -879
63 GF FUND MANAGEMENT CO. LTD. 0.00% of their portfolio GUANGZHOU, F4 1,4271.4k $2.6k $2.6k 0.00% Reduced -106 -106
64 ACADIAN ASSET MANAGEMENT LLC 0.00% of their portfolio Boston, MA 869869 $1.0k $1.0k 0.00% Reduced -63.7k -63,738
65 Bare Financial Services, Inc 0.00% of their portfolio GAP, PA 327327 $589 $589 0.00% Added +225 +225
66 JONES FINANCIAL COMPANIES LLLP 0.00% of their portfolio DES PERES, MO 326326 $554 $554 0.00% Unchanged
67 Rialto Wealth Management, LLC 0.00% of their portfolio SYRACUSE, NY 318318 $573 $573 0.00% New
68 NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio ST. LOUIS, MO 195195 $351 $351 0.00% Unchanged
69 Cornerstone Financial Management LLC 0.00% of their portfolio BURLINGTON, MA 121121 $218 $218 0.00% Unchanged
70 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 6161 $0 $0 0.00% Reduced -921 -921
71 Integrated Wealth Concepts LLC 0.00% of their portfolio WALTHAM, MA 6060 $108 $108 0.00% New
72 Caitong International Asset Management Co., Ltd 0.00% of their portfolio HONG KONG, K3 1313 $23 $23 0.00% New