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SeaBridge Investment Advisors LLC — 13F Holdings & Portfolio

CIK 1304229 · latest 13F-HR filed 2026-07-17

Backtest portfolio

SeaBridge Investment Advisors LLC manages $691.6M in 13F-reported U.S. long-equity assets across 188 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are TSM (4.39%), AAPL (3.73%), VMBS (3.38%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 15 new positions and exited 15; 101 existing positions rose in reported value and 48 fell.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

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AUM
$691.6M

Long-equity book

Holdings
188

Distinct positions

Period
2026-06-30

Filed 2026-07-17

Q/Q Activity
+15 / −15 / ↑101 / ↓48

vs 2026-03-31

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q2 26
TSM4.4% · -0%AAPL3.7% · +3%VMBS3.4% · +11%MU3.3% · +0%GOOGL3.3% · -1%IEF3.2% · +12%JMBS2.9% · +7%PFF2.9% · +10%STX2.4% · -22%MSFT2.3% · +2%AMD2.3% · +1%SPTS2.2% · +6%JAAA2.1% · +18%BRK.B2.1% · +3%GOOG1.7% · -3%ASML1.6% · +2%JPM1.5% · +0%SNDK1.4% · -2%META1.4% · -20%AMZN1.3% · +3%AVGO1.3% · +2%DFUS1.3% · -3%AMGN1.2% · +1%RING1.2% · +2%IGSB1.2% · +13%WPM1.2% · +2%EBND1.2% · +8%SPIP1.2% · +11%WCC1.1% · +2%LLY1.1% · +2698%SPOT1.1% · -0%NTRA1.0% · +0%PWR1.0% · -22%SARO1.0% · +49%FERG0.9% · +2%RTX0.9% · +1%NVDA0.8% · +2%TEL0.8% · +0%SPY0.8% · +2%IVV0.8% · -2%NFLX0.7% · +2%WMT0.7% · +0%GS0.7% · +2%HD0.7% · +16%ICLR0.7% · +4%PGR0.6% · -2%EQT0.6% · +3%BAC0.6% · -3%LOW0.6% · +1%SYK0.6% · +1%NVR0.6% · +4%MS0.6% · +29%BABA0.5% · -1%AR0.5% · +3%BKNG0.5% · +2454%MTD0.5% · -1%CNX0.5% · +3%NVT0.5% · 0%MA0.5% · +2%CCJ0.5% · -0%

Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.

Sector mix

% of 13F value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q1 26 → Q2 26

Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.

13F assets and positions

3 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 31.7%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People

As of the firm’s regulatory filing dated Jun 3, 2026.

Assets Under Management
$771.2M
Discretionary
$771.2M
Employees
12
Accounts
482
Address
450 SPRINGFIELD AVE.
SUITE 301
SUMMIT, NJ 07901-2610
Phone
(908) 273-5085
Website
Name Title / Status Ownership Type
CHIN, HOWARD ControlMANAGING DIRECTOR
since Jan 2021
10–25%Individual
FALKOWSKI, MATTHEW, RICHARD ControlMANAGING DIRECTOR
since Jan 2021
10–25%Individual
Goberman, Nicole ControlCHIEF OPERATING OFFICER/ CHIEF COMPLIANCE OFFICER/ MANAGING DIRECTOR
since Jan 2021
10–25%Individual
HOHLSTEIN, CHRISTOPHER, DEWITT ControlSENIOR MANAGING DIRECTOR
since Jan 2021
25–50%Individual
Morffi, Adrian, Bjorn ControlMANAGING DIRECTOR/ CHIEF FINANCIAL OFFICER
since Jan 2021
10–25%Individual
KEITH, GARNETT, LEECHAIRMAN EMERITUS
since Jan 2021
Less than 5%Individual
Ownership & leadership changes · 5 filings with changes since Mar 29, 2012

From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.

Jan 14, 2021 filing
  • No longer listedBOYD, SUSAN, ELIZABETH · MANAGING DIRECTOR; CHIEF COMPLIANCE OFFICER · 10–25% · control person · listed since Sep 2004
  • No longer listedCONTI, JOHN, CARMINE · MANAGING DIRECTOR · 10–25% · control person · listed since Jan 2004
  • No longer listedDESCALZI, DAVID, CHARLES · MANAGING DIRECTOR · 10–25% · control person · listed since Aug 2002
  • AddedCHIN, HOWARD · MANAGING DIRECTOR · 10–25% · control person
  • AddedFALKOWSKI, MATTHEW, RICHARD · MANAGING DIRECTOR · 10–25% · control person
  • AddedGoberman, Nicole · CHIEF OPERATING OFFICER/ CHIEF COMPLIANCE OFFICER/ MANAGING DIRECTOR · 10–25% · control person
  • AddedHOHLSTEIN, CHRISTOPHER, DEWITT · SENIOR MANAGING DIRECTOR · 25–50% · control person
  • AddedMorffi, Adrian, Bjorn · MANAGING DIRECTOR/ CHIEF FINANCIAL OFFICER · 10–25% · control person
  • ChangedKEITH, GARNETT, LEE · title MEMBER (CLASS D) → CHAIRMAN EMERITUS; ownership 25–50% → Less than 5%; no longer a control person
Mar 28, 2018 filing
  • ChangedBOYD, SUSAN, ELIZABETH · title MEMBER (CLASS B) CHIEF COMPLIANCE OFFICER → MANAGING DIRECTOR; CHIEF COMPLIANCE OFFICER
  • ChangedCONTI, JOHN, CARMINE · title MEMBER (CLASS B)/VICE-CHAIRMAN → MANAGING DIRECTOR
  • ChangedDESCALZI, DAVID, CHARLES · title MEMBER (CLASS B)/PRESIDENT → MANAGING DIRECTOR
Jul 7, 2017 filing
  • ChangedKEITH, GARNETT, LEE · title MANAGING MEMBER (CLASS A AND B)/CHIEF EXECUTIVE OFFICER → MEMBER (CLASS D)
Jun 8, 2015 filing
  • ChangedBOYD, SUSAN, ELIZABETH · title CHIEF COMPLIANCE OFFICER → MEMBER (CLASS B) CHIEF COMPLIANCE OFFICER
  • ChangedCONTI, JOHN, CARMINE · title VICE CHAIRMAN → MEMBER (CLASS B)/VICE-CHAIRMAN
  • ChangedDESCALZI, DAVID, CHARLES · title PRESIDENT → MEMBER (CLASS B)/PRESIDENT
  • ChangedKEITH, GARNETT, LEE · title CHAIRMAN AND CEO → MANAGING MEMBER (CLASS A AND B)/CHIEF EXECUTIVE OFFICER
Mar 30, 2015 filing
  • ChangedKEITH, GARNETT, LEE · ownership 50–75% → 25–50%
Mar 29, 2012 filing (earliest on record)
  • ListedBOYD, SUSAN, ELIZABETH · CHIEF COMPLIANCE OFFICER · 10–25% · control person
  • ListedCONTI, JOHN, CARMINE · VICE CHAIRMAN · 10–25% · control person
  • ListedDESCALZI, DAVID, CHARLES · PRESIDENT · 10–25% · control person
  • ListedKEITH, GARNETT, LEE · CHAIRMAN AND CEO · 50–75% · control person

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

SeaBridge Investment Advisors LLC Holdings (2026-06-30)

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 TAIWAN SEMICONDUCTOR MANUFAC TSM 874039100 $30.3M 4.39% 63,532 SH
2 APPLE INC AAPL 037833100 $25.8M 3.73% 89,073 SH
3 VANGUARD SCOTTSDALE FDS VMBS 92206C771 $23.4M 3.38% 499,622 SH
4 MICRON TECHNOLOGY INC MU 595112103 $22.7M 3.29% 19,686 SH
5 ALPHABET INC GOOGL 02079K305 $22.7M 3.28% 63,546 SH
6 ISHARES TR IEF 464287440 $22.1M 3.20% 233,761 SH
7 JANUS DETROIT STR TR JMBS 47103U852 $20.1M 2.91% 446,615 SH
8 ISHARES TR PFF 464288687 $19.9M 2.88% 654,287 SH
9 SEAGATE TECHNOLOGY HLDNGS PL STX G7997R103 $16.3M 2.36% 16,891 SH
10 MICROSOFT CORP MSFT 594918104 $16.1M 2.33% 43,132 SH
11 ADVANCED MICRO DEVICES INC AMD 007903107 $15.9M 2.31% 27,450 SH
12 SPDR SERIES TRUST SPTS 78468R101 $15.3M 2.21% 527,316 SH
13 JANUS DETROIT STR TR JAAA 47103U845 $14.6M 2.11% 288,801 SH
14 BERKSHIRE HATHAWAY INC DEL BRK.B 084670702 $14.5M 2.09% 28,886 SH
15 ALPHABET INC GOOG 02079K107 $11.6M 1.68% 32,890 SH
16 ASML HLDG NV ASML N07059210 $11.2M 1.62% 5,639 SH
17 JPMORGAN CHASE & CO JPM 46625H100 $10.5M 1.52% 32,167 SH
18 SANDISK CORP SNDK 80004C200 $9.7M 1.41% 4,283 SH
19 META PLATFORMS INC META 30303M102 $9.4M 1.35% 16,609 SH
20 AMAZON COM INC AMZN 023135106 $9.2M 1.33% 38,681 SH
21 BROADCOM INC AVGO 11135F101 $9.2M 1.33% 24,303 SH
22 DIMENSIONAL ETF TRUST DFUS 25434V401 $8.8M 1.27% 107,387 SH
23 AMGEN INC AMGN 031162100 $8.6M 1.25% 23,819 SH
24 ISHARES INC RING 46434G855 $8.5M 1.23% 132,121 SH
25 ISHARES TR IGSB 464288646 $8.4M 1.21% 159,641 SH
26 WHEATON PRECIOUS METALS CORP WPM 962879102 $8.3M 1.20% 73,629 SH
27 SPDR SERIES TRUST EBND 78464A391 $8.2M 1.19% 393,524 SH
28 SPDR SERIES TRUST SPIP 78464A656 $8.1M 1.18% 316,529 SH
29 WESCO INTL INC WCC 95082P105 $7.8M 1.12% 22,461 SH
30 ELI LILLY & CO LLY 532457108 $7.6M 1.10% 6,352 SH
31 SPOTIFY TECHNOLOGY S A SPOT L8681T102 $7.6M 1.10% 16,587 SH
32 NATERA INC NTRA 632307104 $7.2M 1.04% 26,475 SH
33 QUANTA SVCS INC PWR 74762E102 $6.9M 1.00% 9,568 SH
34 STANDARDAERO INC SARO 85423L103 $6.8M 0.98% 225,832 SH
35 FERGUSON ENTERPRISES INC FERG 31488V107 $6.5M 0.94% 27,505 SH
36 RTX CORPORATION RTX 75513E101 $6.0M 0.87% 31,570 SH
37 NVIDIA CORPORATION NVDA 67066G104 $5.4M 0.78% 26,997 SH
38 TE CONNECTIVITY PLC TEL G87052109 $5.3M 0.76% 26,180 SH
39 STATE STR SPDR S&P 500 ETF T SPY 78462F103 $5.2M 0.75% 6,957 SH
40 ISHARES TR IVV 464287200 $5.2M 0.75% 6,931 SH
41 NETFLIX INC. NFLX 64110L106 $5.1M 0.74% 71,495 SH
42 WALMART INC WMT 931142103 $5.0M 0.73% 44,586 SH
43 GOLDMAN SACHS GROUP INC GS 38141G104 $5.0M 0.72% 4,929 SH
44 HOME DEPOT INC HD 437076102 $4.9M 0.71% 13,903 SH
45 ICON PUB LTD CO ICLR G4705A100 $4.7M 0.68% 26,986 SH
46 PROGRESSIVE CORP PGR 743315103 $4.4M 0.63% 20,046 SH
47 EQT CORP EQT 26884L109 $4.4M 0.63% 82,138 SH
48 BANK OF AMER CORP BAC 060505104 $4.3M 0.62% 75,119 SH
49 LOWES COS INC LOW 548661107 $4.2M 0.61% 19,155 SH
50 STRYKER CORPORATION SYK 863667101 $4.2M 0.61% 13,385 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-07-17 $691.6M 188 0001304229-26-000004
2026-03-31 2026-04-29 $591.1M 188 0001304229-26-000003
2025-12-31 2026-01-26 $605.7M 196 0001304229-26-000001
Filer Information
Address
450 SPRINGFIELD AVENUE, SUITE 301
SUMMIT, NJ 07901-2610
Phone
908-273-5085 X209
Filing Manager
SeaBridge Investment Advisors LLC
SUMMIT, NJ
Signatory
Alex Butters
Regulatory Consultant