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Super Investors Penbrook Management LLC
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Penbrook Management LLC

Quarterly 13F snapshot: US-listed longs only, no performance figures — 13F data cannot support them.

Portfolio value
$169M
Positions
102
Quarter ended
September 30, 2026
Filed
October 16, 2026

Reported portfolio value by quarter (48 quarters reported)

$265M $78.1M
Q4 13 Q2 16 Q4 19 Q2 22 Q4 24 Q3 26

$103M in Q4 2013 → $169M now. Hover for any quarter.

Holdings

As reported for the quarter ended September 30, 2026. Activity is the change in share count since the prior quarter's filing.

Holding % of portfolio Activity Shares Value
TR Targa Res Corp 10.6% Trimmed 4.0% 6,617 $17.9M
Amazon Com Inc 7.6% Unchanged 51,760 $12.9M
NA Novo-nordisk A S ADR 7.0% Trimmed 1.5% 311,500 $11.8M
Microsoft Corp 6.6% Trimmed 0.9% 21,720 $11.1M
AC Alphabet Inc Cap Stk Cl A 4.7% Unchanged 23,170 $7.97M
AC Alphabet Inc Cap Stk Cl C 4.5% Trimmed 0.4% 22,454 $7.65M
M Moodys Corp 3.6% Unchanged 13,600 $6.18M
Cryoport Inc 2.1% Trimmed 0.8% 201,085 $3.5M
AS Allot Ltd Shs 1.9% Added 37% 377,395 $3.19M
Seabridge Gold Inc 1.9% Trimmed 0.2% 110,740 $3.14M
Photronics Inc 1.6% Trimmed 0.2% 88,855 $2.73M
Magnite Inc 1.6% Trimmed 5.7% 105,690 $2.67M
Marvell Technology Inc 1.5% Unchanged 9,730 $2.57M
Viemed Healthcare Inc 1.5% Trimmed 0.4% 275,948 $2.51M
Electrovaya Inc 1.5% Added 16% 379,606 $2.49M
Thomson Reuters Corp 1.4% Unchanged 24,381 $2.38M
PP Prothena Corp PLC Shs 1.3% Unchanged 271,720 $2.28M
Vermilion Energy Inc 1.3% Unchanged 197,825 $2.26M
Blackstone Inc 1.2% Unchanged 18,150 $2.03M
CS Cisco Sys Inc 1.2% Unchanged 18,350 $1.98M
Alkami Technology Inc 1.1% Trimmed 1.8% 138,010 $1.89M
Sky Harbour Group Corporation 1.1% Added 910% 197,200 $1.87M
Baytex Energy Corp 1.1% Unchanged 399,350 $1.81M
Extreme Networks Inc 1.1% Unchanged 84,025 $1.8M
NN Nuveen N Y Mun Value Fd 1.0% Unchanged 213,727 $1.66M
SG Sony Group Corp Sponsored ADR 1.0% Added 1.5% 69,500 $1.64M
Automatic Data Processing Inc 1.0% Unchanged 6,300 $1.63M
BH Berkshire Hathaway Inc Del Cl B New 1.0% Trimmed 1.5% 3,240 $1.61M
ET Energy Transfer L P Com Ut Ltd Ptn 0.9% Trimmed 0.3% 74,293 $1.47M
Biolife Solutions Inc 0.8% Trimmed 7.1% 36,895 $1.43M
Airbnb Inc 0.8% Trimmed 2.2% 8,750 $1.41M
Verizon Communications Inc 0.8% Unchanged 30,424 $1.4M
Axcelis Technologies Inc 0.8% Trimmed 3.7% 10,495 $1.38M
Abbvie Inc 0.8% Added 1.9% 5,252 $1.37M
Planet Labs Pbc 0.8% Trimmed 0.5% 81,417 $1.33M
CE Cenovus Energy Inc 0.8% Added 43% 42,700 $1.33M
WC Williams Cos Inc 0.8% Trimmed 0.3% 19,080 $1.3M
MS Mesoblast Ltd Spons ADR 0.8% Unchanged 87,075 $1.28M
MP Meta Platforms Inc Cl A 0.7% Unchanged 1,700 $1.23M
SS State Street SPDR S&P 500 ETF 0.7% Unchanged 1,605 $1.22M
Nvidia Corporation 0.7% Trimmed 0.8% 5,278 $1.21M
CC Curiositystream Inc Cl A 0.7% Trimmed 49% 388,550 $1.13M
HM Hess Midstream LP Cl A Shs 0.7% Trimmed 0.2% 30,005 $1.12M
Data I O Corp 0.6% Unchanged 355,850 $1.04M
UC Usa Compression Partners LP 0.6% Unchanged 41,038 $1.02M
ON Oneok Inc New 0.6% New 11,310 $964K
SP Shell PLC Spon Ads 0.5% Unchanged 9,400 $893K
Par Technology Corp 0.5% Added 18% 63,700 $877K
Popular Inc 0.5% Unchanged 5,300 $824K
EE Emerson Elec Co 0.5% Unchanged 5,300 $822K
NA Novartis Ag Sponsored ADR 0.5% Unchanged 5,540 $790K
Npk International Inc 0.5% Trimmed 0.7% 67,325 $769K
Backblaze Inc 0.4% Trimmed 3.4% 51,900 $726K
Western Midstream Partners LP 0.4% Unchanged 15,900 $705K
IQ Invesco Qqq Trust Series I 0.4% Unchanged 925 $684K
AP Abrdn Physical Gold Shares ETF 0.4% Unchanged 17,080 $676K
K& Kulicke & Soffa Inds Inc 0.4% Unchanged 7,100 $669K
Amplitude Inc 0.4% Trimmed 1.5% 47,955 $664K
Asure Software Inc 0.4% Trimmed 0.5% 87,705 $664K
Iovance Biotherapeutics Inc 0.4% Trimmed 33% 41,195 $611K

Showing top 60 of 102 positions.

Timeline of changes

What changed each quarter, from the filings' own share counts. Largest moves first; most recent 8 quarters.

Q3 2026

quarter ended September 30, 2026 · filed October 16, 2026

Company Action Shares changed Value of change % of portfolio
Sky Harbour Group Corporation Added +177,670 +$1.68M 1.1%
DH Doubleverify Hldgs Inc Exited −102,660 −$1.11M —
CC Curiositystream Inc Cl A Trimmed −376,250 −$1.09M 0.7%
O Oneok Inc Exited −11,310 −$983K —
ON Oneok Inc New New +11,310 +$964K 0.6%
AS Allot Ltd Shs Added +102,100 +$862K 1.9%
TR Targa Res Corp Trimmed −275 −$743K 10.6%
CE Cenovus Energy Inc Added +12,820 +$398K 0.8%
Electrovaya Inc Added +53,375 +$350K 1.5%
Iovance Biotherapeutics Inc Trimmed −20,750 −$308K 0.4%

Showing the 10 largest of 57 changes.

Q2 2026

quarter ended June 30, 2026 · filed July 23, 2026

Company Action Shares changed Value of change % of portfolio
AT Aehr Test Sys Trimmed −74,315 −$7.14M 0.3%
Seabridge Gold Inc New +110,915 +$2.85M 1.8%
SG Seabridge Gold Inc Com Exited −95,990 −$2.72M —
AS Allot Ltd Shs New +275,295 +$2.44M 1.6%
TR Thomson Reuters Corp Com Exited −24,774 −$2.23M —
Thomson Reuters Corp New +24,381 +$1.99M 1.3%
Baytex Energy Corp New +399,350 +$1.6M 1.0%
PL Planet Labs Pbc Com Cl A Trimmed −24,053 −$797K 1.7%
I2 Ishares 20 Year Treasury Bond ETF New +5,510 +$476K 0.3%
Biolife Solutions Inc Added +16,550 +$467K 0.7%

Showing the 10 largest of 57 changes.

Q1 2026

quarter ended March 31, 2026 · filed April 21, 2026

Company Action Shares changed Value of change % of portfolio
PL Planet Labs Pbc Com Cl A Trimmed −189,375 −$5.29M 2.2%
PP Prothena Corp PLC Shs New +271,720 +$2.64M 2.0%
AT Aehr Test Sys Com Trimmed −35,385 −$1.31M 2.2%
SF Synchrony Financial Com Exited −15,500 −$1.29M —
EN Extreme Networks Inc Com New +83,525 +$1.26M 1.0%
CC Cryoport Inc Com Par $0.001 Added +132,940 +$1.1M 1.2%
CC Curiositystream Inc Com Cl A Added +327,850 +$970K 1.5%
MC Magnite Inc Com Added +81,075 +$963K 1.0%
CC Cohu Inc Com Exited −38,300 −$891K —
PC Popular Inc Com New Trimmed −6,350 −$852K 0.6%

Showing the 10 largest of 62 changes.

Q4 2025

quarter ended December 31, 2025 · filed January 06, 2026

Company Action Shares changed Value of change % of portfolio
DH Doubleverify Hldgs Inc Com New +102,910 +$1.18M 0.8%
MC Microsoft Corp Com Trimmed −1,555 −$752K 7.6%
PL Planet Labs Pbc Com Cl A Trimmed −18,975 −$374K 4.0%
TR Targa Res Corp Com Trimmed −1,883 −$347K 0.9%
BS Bristol-myers Squibb Co Com New +6,250 +$337K 0.2%
BF Builders Firstsource Inc Com Exited −2,741 −$332K —
EC Electrovaya Inc Com New Added +41,950 +$331K 1.9%
IL Iren Limited Ordinary Shares Exited −6,200 −$291K —
CC Cohu Inc Com Trimmed −11,200 −$261K 0.6%
PT Par Technology Corp Com Added +7,060 +$256K 0.5%

Showing the 10 largest of 86 changes.

Q3 2025

quarter ended September 30, 2025 · filed October 22, 2025

Company Action Shares changed Value of change % of portfolio
NA Novo-nordisk A S ADR Trimmed −311,200 −$17.3M 12.1%
MC Microsoft Corp Com Trimmed −26,682 −$13.8M 8.8%
AC Amazon Com Inc Com Trimmed −51,855 −$11.4M 7.9%
AC Alphabet Inc Cap Stk Cl C Trimmed −26,720 −$6.51M 3.9%
MC Moodys Corp Com Trimmed −13,650 −$6.5M 4.5%
AC Alphabet Inc Cap Stk Cl A Trimmed −23,170 −$5.63M 3.9%
PL Planet Labs Pbc Com Cl A Trimmed −406,005 −$5.27M 2.8%
TR Thomson Reuters Corp Com Trimmed −24,848 −$3.86M 2.7%
VN Veren Inc New Exited −441,125 −$2.92M —
BC Blackstone Inc Com Trimmed −15,600 −$2.67M 1.8%

Showing the 10 largest of 119 changes.

Q2 2025

quarter ended June 30, 2025 · filed July 28, 2025

Company Action Shares changed Value of change % of portfolio
NA Novo-nordisk A S ADR Added +311,400 +$21.6M 16.3%
MC Microsoft Corp Com Added +24,980 +$10.9M 8.4%
AC Amazon Com Inc Com Added +51,355 +$10.5M 8.0%
MC Moodys Corp Com Added +13,650 +$6.6M 5.0%
TR Thomson Reuters Corp Com Added +24,848 +$4.64M 3.5%
AC Alphabet Inc Cap Stk Cl C Added +24,720 +$4.12M 3.1%
AC Alphabet Inc Cap Stk Cl A Added +23,170 +$3.83M 2.9%
TR Targa Res Corp Added +12,201 +$2.29M 1.7%
BC Blackstone Inc Com Added +14,900 +$2.15M 1.7%
PC Photronics Inc Com Added +106,430 +$2.1M 1.5%

Showing the 10 largest of 102 changes.

Q1 2025

quarter ended March 31, 2025 · filed April 01, 2025

Company Action Shares changed Value of change % of portfolio
Champion Homes Inc Exited −8,585 −$756K —
Nvidia Corporation New +5,223 +$566K 0.4%
Intevac Inc Exited −148,780 −$506K —
AP Abrdn Physical Gold Shares ETF New +15,340 +$457K 0.3%
NH Navigator Hldgs Ltd Shs Trimmed −32,200 −$429K 0.5%
Walmart Inc Exited −3,821 −$345K —
Verizon Communications Inc Added +6,950 +$315K 1.2%
Microsoft Corp Trimmed −796 −$299K 7.4%
LE Lincoln Edl Svcs Corp Trimmed −17,595 −$279K 0.2%
Merck & Co Inc Exited −2,706 −$269K —

Showing the 10 largest of 86 changes.

Q4 2024

quarter ended December 31, 2024 · filed January 23, 2025

Company Action Shares changed Value of change % of portfolio
SG Sony Group Corp Sponsored ADR Added +54,500 +$1.15M 1.0%
TR Targa Res Corp Trimmed −4,371 −$780K 1.7%
IS Invesco S&P 500 Top 50 ETF Exited −10,190 −$484K —
Electrovaya Inc New +183,215 +$448K 0.3%
GC Golub Cap Bdc Inc New +28,630 +$434K 0.3%
MC Mr Cooper Group Inc Added +4,325 +$415K 1.0%
MS Mesoblast Ltd Spons ADR Trimmed −16,200 −$321K 1.2%
LE Lincoln Edl Svcs Corp Trimmed −18,940 −$300K 0.4%
BC Backblaze Inc Cl A New +47,875 +$288K 0.2%
CC Curiositystream Inc Cl A New +161,750 +$247K 0.2%

Showing the 10 largest of 60 changes.

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