SeaBridge Investment Advisors LLC

13F filer · CIK 0001304229

Reported Jul 17, 2026

Net buyer this quarter

13F portfolio value$692MU.S. long equity reported on 13F

Positions14213 new · 7 closed

Net flow last quarter+$8.21MBuys minus sells

Top 10 positions weight27.7%Concentration

Holdings

13F · last 4 quarters free

Scroll for earlier quarters

Company	Value	% of portfolio	% of company	POSITION CHANGE qoq %	First reported
Q2 2026Reported Jul 17, 2026142 positions
TSMTaiwan Semiconductor Manufacturing Co Ltd	$30.3M	4.39%	0.00%	0.0%	Q3 2013
AAPLApple Inc.	$25.8M	3.73%	0.00%	+2.7%	Q3 2013
MUMicron Technology Inc	$22.7M	3.29%	0.00%	+0.2%	Q4 2024
GOOGLAlphabet Inc.	$22.7M	3.28%	0.00%	-1.2%	Q3 2015
STXSeagate Technology Holdings plc	$16.3M	2.36%	0.01%	-22.1%	Q3 2017
MSFTMicrosoft Corp	$16.1M	2.33%	0.00%	+2.5%	Q1 2016
AMDAdvanced Micro Devices Inc	$15.9M	2.31%	0.00%	+0.7%	Q4 2024
SPTSSports Media Inc	$15.3M	2.21%	Not reported	+6.5%	Q1 2025
BRK.BBerkshire Hathaway Inc	$14.5M	2.09%	Not reported	+2.9%	Q3 2013
GOOGAlphabet Inc.	$11.6M	1.68%	Not reported	-3.1%	Q3 2015
ASMLAsml Holding NV	$11.2M	1.62%	0.00%	+2.5%	Q3 2024
JPMJPMorgan Chase & Co	$10.5M	1.52%	0.00%	+0.3%	Q3 2013
SNDKSandisk Corp	$9.74M	1.41%	0.00%	-2.2%	Q3 2014
METAMeta Platforms, Inc.	$9.36M	1.35%	Not reported	-19.7%	Q3 2013
AMZNAmazon Com Inc	$9.22M	1.33%	0.00%	+3.3%	Q1 2017
AVGOBroadcom Inc.	$9.18M	1.33%	0.00%	+2.0%	Q1 2016
AMGNAmgen Inc	$8.63M	1.25%	0.00%	+0.6%	Q2 2014
WPMWheaton Precious Metals Corp.	$8.27M	1.20%	0.02%	+2.2%	Q1 2022
WCCWesco International Inc	$7.76M	1.12%	0.05%	+1.9%	Q4 2024
LLYELI LILLY & Co	$7.62M	1.10%	0.00%	+2698.2%	Q2 2024
SPOTSpotify Technology S.A.	$7.62M	1.10%	0.01%	-0.5%	Q3 2019
NTRANatera, Inc.	$7.19M	1.04%	0.02%	+0.3%	Q4 2024
PWRQuanta Services, Inc.	$6.89M	1.00%	0.01%	-22.3%	Q4 2024
SAROStandardAero, Inc.	$6.75M	0.98%	0.07%	+48.7%	Q4 2025
FERGFerguson Enterprises Inc.	$6.53M	0.94%	0.01%	+1.5%	Q3 2023
RTXRTX Corp	$5.99M	0.87%	0.00%	+1.4%	Q2 2020
NVDANvidia Corp	$5.4M	0.78%	0.00%	+1.7%	Q4 2023
TELTE Connectivity plc	$5.28M	0.76%	0.01%	+0.3%	Q3 2013
SPYSPDR S&P 500 ETF Trust	$5.19M	0.75%	Not reported	+2.3%	Q3 2013
NFLXNetflix Inc	$5.1M	0.74%	0.00%	+1.6%	Q1 2022
WMTWalmart Inc.	$5.05M	0.73%	0.00%	+0.3%	Q2 2020
GSGoldman Sachs Group Inc	$4.99M	0.72%	0.00%	+2.2%	Q3 2013
HDHome Depot, Inc.	$4.9M	0.71%	0.00%	+15.7%	Q3 2013
ICLRIcon PLC	$4.69M	0.68%	0.04%	+4.2%	Q1 2022
PGRProgressive Corp	$4.38M	0.63%	0.00%	-1.6%	Q1 2026
EQTEQT Corp	$4.37M	0.63%	0.01%	+2.9%	Q4 2022
BACBank of America Corp	$4.28M	0.62%	0.00%	-3.0%	Q3 2013
LOWLowes Companies Inc	$4.22M	0.61%	0.00%	+0.7%	Q3 2013
SYKStryker Corp	$4.21M	0.61%	0.00%	+1.3%	Q3 2013
NVRNVR Inc	$4.09M	0.59%	0.02%	+4.0%	Q3 2019
MSMorgan Stanley	$4.03M	0.58%	0.00%	+28.7%	Q1 2026
BABAAlibaba Group Holding Ltd	$3.66M	0.53%	0.00%	-0.9%	Q4 2014
ARANTERO RESOURCES Corp	$3.6M	0.52%	0.03%	+2.6%	Q1 2018
BKNGBooking Holdings Inc.	$3.58M	0.52%	0.00%	+2.2%	Q1 2018
MTDMettler Toledo International Inc/	$3.54M	0.51%	0.01%	-1.1%	Q2 2025
CNXCNX Resources Corp	$3.53M	0.51%	0.07%	+3.0%	Q4 2022
NVTnVent Electric plc	$3.52M	0.51%	0.01%	Not reported	Q2 2018
MAMastercard Inc	$3.51M	0.51%	0.00%	+1.7%	Q3 2013
CCJCameco Corp	$3.38M	0.49%	0.01%	-0.3%	Q2 2014
INTCIntel Corp	$3.15M	0.46%	0.00%	+13.6%	Q2 2014

Q1 2026Reported Apr 29, 2026136 positions
AAPLApple Inc.	$22M	3.72%	0.00%	+7.2%	Q3 2013
TSMTaiwan Semiconductor Manufacturing Co Ltd	$21.5M	3.63%	0.00%	-11.0%	Q3 2013
GOOGLAlphabet Inc.	$18.5M	3.13%	0.00%	+9.6%	Q3 2015
MSFTMicrosoft Corp	$15.6M	2.64%	0.00%	+11.1%	Q1 2016
SPTSSports Media Inc	$14.4M	2.44%	Not reported	-2.8%	Q1 2025
BRK.BBerkshire Hathaway Inc	$13.5M	2.28%	Not reported	+13.4%	Q3 2013
METAMeta Platforms, Inc.	$11.8M	2.00%	Not reported	+17.7%	Q3 2013
GOOGAlphabet Inc.	$9.73M	1.65%	Not reported	-5.1%	Q3 2015
WPMWheaton Precious Metals Corp.	$9.44M	1.60%	0.02%	-4.2%	Q1 2022
JPMJPMorgan Chase & Co	$9.44M	1.60%	0.00%	+12.5%	Q3 2013
STXSeagate Technology Holdings plc	$8.5M	1.44%	0.01%	-11.9%	Q3 2017
AMGNAmgen Inc	$8.33M	1.41%	0.00%	+19.9%	Q2 2014
SPOTSpotify Technology S.A.	$8.08M	1.37%	0.01%	+7.3%	Q3 2019
AMZNAmazon Com Inc	$7.8M	1.32%	0.00%	-3.8%	Q1 2017
AVGOBroadcom Inc.	$7.38M	1.25%	0.00%	-13.3%	Q1 2016
ASMLAsml Holding NV	$7.27M	1.23%	0.00%	-0.2%	Q3 2024
NFLXNetflix Inc	$6.77M	1.14%	0.00%	+36.6%	Q1 2022
PWRQuanta Services, Inc.	$6.76M	1.14%	0.01%	+23.9%	Q4 2024
MUMicron Technology Inc	$6.64M	1.12%	0.00%	+22.6%	Q4 2024
FERGFerguson Enterprises Inc.	$6.32M	1.07%	0.01%	+16.9%	Q3 2023
WCCWesco International Inc	$6.03M	1.02%	0.05%	+20.3%	Q4 2024
RTXRTX Corp	$6.01M	1.02%	0.00%	+22.5%	Q2 2020
AMDAdvanced Micro Devices Inc	$5.54M	0.94%	0.00%	+22.9%	Q4 2024
WMTWalmart Inc.	$5.52M	0.93%	0.00%	+18.0%	Q2 2020
TELTE Connectivity plc	$5.45M	0.92%	0.01%	+12.5%	Q3 2013
NTRANatera, Inc.	$5.28M	0.89%	0.02%	+21.1%	Q4 2024
EQTEQT Corp	$5.08M	0.86%	0.01%	+27.4%	Q4 2022
BABAAlibaba Group Holding Ltd	$4.82M	0.82%	0.00%	+18.6%	Q4 2014
NVDANvidia Corp	$4.63M	0.78%	0.00%	+3.0%	Q4 2023
LOWLowes Companies Inc	$4.5M	0.76%	0.00%	+21.7%	Q3 2013
SPYSPDR S&P 500 ETF Trust	$4.42M	0.75%	Not reported	+2.2%	Q3 2013
SYKStryker Corp	$4.34M	0.73%	0.00%	+67.6%	Q3 2013
ARANTERO RESOURCES Corp	$4.24M	0.72%	0.03%	+37.3%	Q1 2018
GSGoldman Sachs Group Inc	$4.08M	0.69%	0.00%	+566.8%	Q3 2013
PGRProgressive Corp	$4.04M	0.68%	0.00%	New	Q1 2026
HDHome Depot, Inc.	$3.95M	0.67%	0.00%	-2.1%	Q3 2013
SAROStandardAero, Inc.	$3.92M	0.66%	0.05%	+161.6%	Q4 2025
CNXCNX Resources Corp	$3.9M	0.66%	0.07%	+33.9%	Q4 2022
NVRNVR Inc	$3.8M	0.64%	0.02%	+36.7%	Q3 2019
ICEIntercontinental Exchange, Inc.	$3.8M	0.64%	0.00%	-25.5%	Q1 2021
BACBank of America Corp	$3.77M	0.64%	0.00%	-0.8%	Q3 2013
CCJCameco Corp	$3.62M	0.61%	0.01%	Not reported	Q2 2014
MTDMettler Toledo International Inc/	$3.54M	0.60%	0.01%	+60.3%	Q2 2025
MAMastercard Inc	$3.36M	0.57%	0.00%	-0.5%	Q3 2013
BKNGBooking Holdings Inc.	$3.31M	0.56%	0.00%	+12.9%	Q1 2018
TMOThermo Fisher Scientific Inc.	$2.87M	0.49%	0.00%	-44.4%	Q3 2013
ITTItt Inc.	$2.87M	0.49%	0.02%	-0.1%	Q3 2013
ICLRIcon PLC	$2.87M	0.48%	0.03%	+16.4%	Q1 2022
SNDKSandisk Corp	$2.78M	0.47%	0.00%	-26.9%	Q3 2014
AMAntero Midstream Corp	$2.76M	0.47%	0.03%	-3.6%	Q3 2020

Q4 2025Reported Jan 26, 2026138 positions
AAPLApple Inc.	$22M	3.63%	0.00%	-1.4%	Q3 2013
TSMTaiwan Semiconductor Manufacturing Co Ltd	$21.7M	3.58%	0.00%	-3.0%	Q3 2013
GOOGLAlphabet Inc.	$18.4M	3.03%	0.00%	+0.1%	Q3 2015
MSFTMicrosoft Corp	$18.3M	3.03%	0.00%	-2.9%	Q1 2016
SPTSSports Media Inc	$14.9M	2.46%	Not reported	+36.9%	Q1 2025
BRK.BBerkshire Hathaway Inc	$12.4M	2.05%	Not reported	+12.5%	Q3 2013
METAMeta Platforms, Inc.	$11.6M	1.92%	Not reported	-7.3%	Q3 2013
GOOGAlphabet Inc.	$11.2M	1.85%	Not reported	-1.2%	Q3 2015
AVGOBroadcom Inc.	$9.51M	1.57%	0.00%	-3.9%	Q1 2016
JPMJPMorgan Chase & Co	$9.19M	1.52%	0.00%	-2.6%	Q3 2013
SPOTSpotify Technology S.A.	$9.02M	1.49%	0.01%	-4.6%	Q3 2019
AMZNAmazon Com Inc	$8.98M	1.48%	0.00%	+1.8%	Q1 2017
WPMWheaton Precious Metals Corp.	$8.84M	1.46%	0.02%	+12.0%	Q1 2022
STXSeagate Technology Holdings plc	$6.78M	1.12%	0.01%	-4.7%	Q3 2017
AMGNAmgen Inc	$6.46M	1.07%	0.00%	-1.3%	Q2 2014
TMOThermo Fisher Scientific Inc.	$6.09M	1.01%	0.00%	-1.8%	Q3 2013
ASMLAsml Holding NV	$5.9M	0.97%	0.00%	+0.2%	Q3 2024
TELTE Connectivity plc	$5.28M	0.87%	0.01%	+27.3%	Q3 2013
ICEIntercontinental Exchange, Inc.	$5.25M	0.87%	0.01%	-6.7%	Q1 2021
FERGFerguson Enterprises Inc.	$5.16M	0.85%	0.01%	-2.9%	Q3 2023
NTRANatera, Inc.	$4.99M	0.82%	0.02%	-2.8%	Q4 2024
NFLXNetflix Inc	$4.83M	0.80%	0.00%	-10.9%	Q1 2022
NVDANvidia Corp	$4.81M	0.79%	0.00%	+1.0%	Q4 2023
BABAAlibaba Group Holding Ltd	$4.75M	0.78%	0.00%	-0.5%	Q4 2014
AMDAdvanced Micro Devices Inc	$4.75M	0.78%	0.00%	-2.4%	Q4 2024
RTXRTX Corp	$4.66M	0.77%	0.00%	-2.0%	Q2 2020
MUMicron Technology Inc	$4.57M	0.76%	0.00%	+462.4%	Q4 2024
SPYSPDR S&P 500 ETF Trust	$4.54M	0.75%	Not reported	Not reported	Q3 2013
WCCWesco International Inc	$4.48M	0.74%	0.04%	+1.1%	Q4 2024
DHRDanaher Corp	$4.48M	0.74%	0.00%	Not reported	Q3 2013
BACBank of America Corp	$4.29M	0.71%	0.00%	-8.2%	Q3 2013
HDHome Depot, Inc.	$4.22M	0.70%	0.00%	-6.0%	Q3 2013
WMTWalmart Inc.	$4.19M	0.69%	0.00%	-2.9%	Q2 2020
PWRQuanta Services, Inc.	$4.19M	0.69%	0.01%	-2.6%	Q4 2024
ICLRIcon PLC	$4.06M	0.67%	0.03%	+50.5%	Q1 2022
MAMastercard Inc	$3.85M	0.64%	0.00%	-1.6%	Q3 2013
LOWLowes Companies Inc	$3.77M	0.62%	0.00%	-1.1%	Q3 2013
BKNGBooking Holdings Inc.	$3.73M	0.62%	0.00%	-6.6%	Q1 2018
DEDeere & Co	$3.39M	0.56%	0.00%	-11.2%	Q3 2013
EQTEQT Corp	$3.36M	0.55%	0.01%	+1.8%	Q4 2022
BUDAnheuser-Busch InBev SA	$3.34M	0.55%	0.00%	-4.5%	Q1 2018
TSITCW Strategic Income Fund Inc	$3.3M	0.54%	Not reported	-4.4%	Q4 2014
TMUST-Mobile US, Inc.	$3.09M	0.51%	0.00%	-45.2%	Q4 2021
NVRNVR Inc	$3.08M	0.51%	0.02%	+1.0%	Q3 2019
FWONKLiberty Media Corp	$2.82M	0.47%	Not reported	+1.0%	Q2 2016
CNXCNX Resources Corp	$2.78M	0.46%	0.05%	+2.5%	Q4 2022
SYKStryker Corp	$2.77M	0.46%	0.00%	+1.0%	Q3 2013
WRBBerkley W R Corp	$2.62M	0.43%	0.01%	+5.7%	Q2 2024
ITTItt Inc.	$2.62M	0.43%	0.02%	Not reported	Q3 2013
ARANTERO RESOURCES Corp	$2.51M	0.41%	0.02%	+4.5%	Q1 2018

Q3 2025Reported Oct 22, 2025145 positions
AAPLApple Inc.	$20.9M	3.39%	0.00%	+1.4%	Q3 2013
TSMTaiwan Semiconductor Manufacturing Co Ltd	$20.6M	3.34%	0.00%	+0.9%	Q3 2013
MSFTMicrosoft Corp	$20.2M	3.28%	0.00%	+2.0%	Q1 2016
GOOGLAlphabet Inc.	$14.3M	2.31%	0.00%	+7.1%	Q3 2015
METAMeta Platforms, Inc.	$13.9M	2.26%	Not reported	+11.8%	Q3 2013
SPOTSpotify Technology S.A.	$11.4M	1.84%	0.01%	+0.6%	Q3 2019
ORCLOracle Corp	$11.3M	1.83%	0.00%	+0.5%	Q3 2013
BRK.BBerkshire Hathaway Inc	$11.1M	1.79%	Not reported	-0.2%	Q3 2013
SPTSSports Media Inc	$10.9M	1.77%	Not reported	-18.5%	Q1 2025
AVGOBroadcom Inc.	$9.43M	1.53%	0.00%	+3.3%	Q1 2016
JPMJPMorgan Chase & Co	$9.24M	1.50%	0.00%	+1.4%	Q3 2013
GOOGAlphabet Inc.	$8.81M	1.43%	Not reported	-0.3%	Q3 2015
AMZNAmazon Com Inc	$8.39M	1.36%	0.00%	+7.2%	Q1 2017
WPMWheaton Precious Metals Corp.	$7.51M	1.22%	0.01%	+4.5%	Q1 2022
NFLXNetflix Inc	$6.94M	1.13%	0.00%	+4.6%	Q1 2022
TMUST-Mobile US, Inc.	$6.66M	1.08%	0.00%	+0.4%	Q4 2021
STXSeagate Technology Holdings plc	$6.1M	0.99%	0.01%	-9.2%	Q3 2017
ICEIntercontinental Exchange, Inc.	$5.85M	0.95%	0.01%	+10.5%	Q1 2021
BABAAlibaba Group Holding Ltd	$5.82M	0.94%	0.00%	+7.0%	Q4 2014
AMGNAmgen Inc	$5.65M	0.92%	0.00%	+4.2%	Q2 2014
FERGFerguson Enterprises Inc.	$5.36M	0.87%	0.01%	+24.3%	Q3 2023
ASMLAsml Holding NV	$5.33M	0.87%	0.00%	+8.0%	Q3 2024
HDHome Depot, Inc.	$5.29M	0.86%	0.00%	-0.2%	Q3 2013
TMOThermo Fisher Scientific Inc.	$5.19M	0.84%	0.00%	-1.1%	Q3 2013
NVDANvidia Corp	$4.76M	0.77%	0.00%	+0.4%	Q4 2023
SPYSPDR S&P 500 ETF Trust	$4.43M	0.72%	Not reported	Not reported	Q3 2013
BACBank of America Corp	$4.38M	0.71%	0.00%	+4.8%	Q3 2013
RTXRTX Corp	$4.34M	0.70%	0.00%	+5.0%	Q2 2020
PWRQuanta Services, Inc.	$4.23M	0.69%	0.01%	+2.3%	Q4 2024
BKNGBooking Holdings Inc.	$4.02M	0.65%	0.00%	+2.5%	Q1 2018
TELTE Connectivity plc	$4M	0.65%	0.01%	+118.0%	Q3 2013
WMTWalmart Inc.	$3.99M	0.65%	0.00%	-19.3%	Q2 2020
LOWLowes Companies Inc	$3.97M	0.65%	0.00%	+22.7%	Q3 2013
MAMastercard Inc	$3.9M	0.63%	0.00%	+6.1%	Q3 2013
WCCWesco International Inc	$3.83M	0.62%	0.04%	+7.2%	Q4 2024
DEDeere & Co	$3.74M	0.61%	0.00%	+4.5%	Q3 2013
AMDAdvanced Micro Devices Inc	$3.68M	0.60%	0.00%	+602.8%	Q4 2024
NTRANatera, Inc.	$3.61M	0.59%	0.02%	+0.1%	Q4 2024
PAIWestern Asset Investment Grade Income Fund Inc.	$3.53M	0.57%	Not reported	-7.1%	Q1 2016
TSITCW Strategic Income Fund Inc	$3.43M	0.56%	Not reported	-13.3%	Q4 2014
NVRNVR Inc	$3.36M	0.55%	0.01%	+49.3%	Q3 2019
EQTEQT Corp	$3.35M	0.54%	0.01%	+4.9%	Q4 2022
RPMRPM International Inc	$3.26M	0.53%	0.02%	+1.9%	Q3 2013
BUDAnheuser-Busch InBev SA	$3.25M	0.53%	0.00%	+7.3%	Q1 2018
FWONKLiberty Media Corp	$2.96M	0.48%	Not reported	+7.6%	Q2 2016
SYKStryker Corp	$2.89M	0.47%	0.00%	+4.8%	Q3 2013
WRBBerkley W R Corp	$2.71M	0.44%	0.01%	+8.9%	Q2 2024
ITTItt Inc.	$2.7M	0.44%	0.02%	-4.4%	Q3 2013
ICLRIcon PLC	$2.59M	0.42%	0.02%	Not reported	Q1 2022
AMAntero Midstream Corp	$2.55M	0.41%	0.03%	-2.0%	Q3 2020

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