Security Snapshot

City Office Reit, Inc. - Common Stock, $0.01 Par Value (CIO) Institutional Ownership

CUSIP: 178587101

13F Institutional Holders and Ownership History from Q2 2014 to Q1 2026

Latest Period

Q4 2025

Institutions Reporting

150

Shares (Excl. Options)

31,109,507

Price

$6.99

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Type / Class
Equity / Common Stock, $0.01 Par Value
Symbol
CIO
Shares outstanding
40,579,710
Price per share
$6.99
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
31,109,507
Total reported value
$217,415,887
% of total 13F portfolios
0%
Share change
+1,525,940
Value change
+$10,757,505
Number of holders
150
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Quick Takeaways

  • CIO - City Office Reit, Inc. - Common Stock, $0.01 Par Value is tracked under CUSIP 178587101.
  • 150 institutions reported positions in Q4 2025.
  • 4 significant owners is listed from Schedule 13D/13G reporting.

What Changed

  • Holder count moved from 150 to 1 between Q4 2025 and Q1 2026.
  • Reported value moved from $217,415,887 to $741.

Why This Matters

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Source Evidence

Source: SEC Form 13F

Latest holder context comes from 150 institutions filings for Q4 2025.

Open SEC Evidence

Investment Quick Answers

What is CUSIP 178587101?
CUSIP 178587101 identifies CIO - City Office Reit, Inc. - Common Stock, $0.01 Par Value in SEC 13F datasets.

Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.

Significant Owners of City Office Reit, Inc. - Common Stock, $0.01 Par Value (CIO) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
BlackRock, Inc. 8.9% $18,066,570 3,584,637 BlackRock, Inc. 31 Dec 2024
Newtyn Management, LLC 6.9% $19,572,000 2,800,000 Newtyn Management, LLC 31 Dec 2025
GLAZER CAPITAL, LLC 6% $16,794,448 2,412,926 Glazer Capital, LLC 25 Sep 2025
VANGUARD GROUP INC 5.1% $10,399,521 2,063,397 The Vanguard Group 31 Dec 2024

As of 31 Dec 2025, 150 institutional investors reported holding 31,109,507 shares of City Office Reit, Inc. - Common Stock, $0.01 Par Value (CIO). This represents 77% of the company’s total 40,579,710 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of City Office Reit, Inc. - Common Stock, $0.01 Par Value (CIO) together control 65% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BlackRock, Inc. 8.3% 3,352,706 +2.4% 0% $23,435,417
Newtyn Management, LLC 6.9% 2,800,000 -29% 2.1% $19,572,000
Glazer Capital, LLC 6.8% 2,775,000 +22% 0.51% $19,397,000
VANGUARD GROUP INC 5.3% 2,170,563 +1.5% 0% $15,172,235
Trium Capital LLP 5% 2,027,163 11% $14,169,869
FIL Ltd 4% 1,614,545 0% 0.01% $11,285,670
NOMURA HOLDINGS INC 3.5% 1,410,430 -20% 0.07% $9,858,906
GABELLI FUNDS LLC 2.6% 1,041,665 +166% 0.05% $7,281,238
Magnetar Financial LLC 2.5% 1,012,143 +2.3% 0.07% $7,074,879
GEODE CAPITAL MANAGEMENT, LLC 2.2% 876,753 -6% 0% $6,129,883
STATE STREET CORP 2.1% 867,444 -0.42% 0% $6,063,434
GARDNER LEWIS ASSET MANAGEMENT L P 1.9% 764,158 1.4% $5,341,464
MORGAN STANLEY 1.9% 759,313 -35% 0% $5,307,607
GABELLI & Co INVESTMENT ADVISERS, INC. 1.7% 693,050 +184% 0.73% $4,844,420
TORONTO DOMINION BANK 1.5% 612,093 +538% 0.01% $4,278,530
PRELUDE CAPITAL MANAGEMENT, LLC 1% 415,998 +732% 0.21% $2,907,826
Groupe la Francaise 1% 412,718 +104% 0.04% $2,884,899
GOLDMAN SACHS GROUP INC 0.93% 377,708 +21% 0% $2,640,179
Carmignac Gestion 0.92% 375,233 0% 0.04% $2,622,879
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.82% 332,766 -1.4% 0% $2,326,034
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.8% 326,091 -4.1% 0% $2,279,376
NORTHERN TRUST CORP 0.8% 325,778 -5.2% 0% $2,277,189
MILLENNIUM MANAGEMENT LLC 0.72% 291,630 -36% 0% $2,038,494
DIMENSIONAL FUND ADVISORS LP 0.71% 289,834 -31% 0% $2,025,940
CREDIT INDUSTRIEL ET COMMERCIAL 0.68% 275,144 +104% 0.28% $1,923,257

Institutional Holders of City Office Reit, Inc. - Common Stock, $0.01 Par Value (CIO) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q1 106 $741 -$22,393,324 $6.99 1
2025 Q4 31,109,507 $217,415,887 +$10,757,505 $6.99 150
2025 Q3 29,881,793 $207,976,471 +$37,420,920 $6.96 145
2025 Q2 24,861,703 $132,783,318 -$836,817 $5.34 126
2025 Q1 25,072,738 $130,121,259 -$2,977,580 $5.19 136
2024 Q4 25,622,561 $141,410,593 -$3,391,018 $5.52 142
2024 Q3 26,128,235 $152,575,926 -$326,519 $5.84 133
2024 Q2 26,168,692 $130,310,855 -$2,349,492 $4.98 124
2024 Q1 26,587,799 $138,512,825 -$2,942,225 $5.21 125
2023 Q4 27,027,975 $165,139,977 +$2,362,406 $6.11 124
2023 Q3 26,766,795 $113,766,493 -$6,673,434 $4.25 130
2023 Q2 28,055,296 $156,266,026 -$5,006,940 $5.57 140
2023 Q1 28,640,637 $197,603,160 -$10,337,674 $6.90 145
2022 Q4 29,942,155 $250,980,473 -$5,943,193 $8.38 153
2022 Q3 30,513,974 $304,232,215 -$36,794,538 $9.97 143
2022 Q2 33,682,910 $436,292,093 -$13,752,297 $12.95 156
2022 Q1 34,420,823 $608,163,644 +$18,228,886 $17.66 163
2021 Q4 33,453,167 $659,208,991 +$11,043,415 $19.72 149
2021 Q3 32,797,255 $585,920,659 +$29,572,116 $17.86 142
2021 Q2 31,297,184 $389,023,103 -$2,390,650 $12.43 132
2021 Q1 31,525,774 $334,817,317 -$17,184,226 $10.62 132
2020 Q4 33,157,113 $324,075,251 -$10,849,968 $9.77 123
2020 Q3 34,550,084 $259,893,456 -$19,227,096 $7.52 134
2020 Q2 36,859,601 $370,617,033 -$50,072,645 $10.06 131
2020 Q1 42,493,747 $307,174,091 -$17,460,098 $7.23 159
2019 Q4 44,293,084 $598,805,974 +$98,537,803 $13.52 157
2019 Q3 36,931,709 $531,413,063 +$110,420,514 $14.39 141
2019 Q2 29,360,994 $352,036,199 +$880,569 $11.99 128
2019 Q1 29,739,882 $336,331,582 -$275,431 $11.31 138
2018 Q4 29,785,907 $305,291,815 +$7,042,652 $10.25 135
2018 Q3 28,937,677 $365,127,593 +$48,709,546 $12.62 135
2018 Q2 25,072,474 $321,670,180 +$23,535,183 $12.83 124
2018 Q1 23,284,927 $269,162,610 +$683,103 $11.56 118
2017 Q4 23,118,421 $300,780,053 +$68,401,501 $13.01 126
2017 Q3 17,452,287 $240,283,014 +$18,401,787 $13.77 106
2017 Q2 16,099,042 $204,452,157 +$6,962,421 $12.70 103
2017 Q1 15,500,251 $188,318,204 +$56,173,128 $12.15 112
2016 Q4 12,070,687 $158,899,672 +$5,679,575 $13.17 99
2016 Q3 11,756,627 $149,647,885 +$19,549,800 $12.73 97
2016 Q2 10,214,077 $132,572,101 +$27,475,962 $12.98 91
2016 Q1 8,203,653 $93,523,125 +$42,879,650 $11.40 83
2015 Q4 4,438,231 $53,848,000 +$1,365,036 $12.18 59
2015 Q3 4,294,760 $48,780,000 -$3,645,323 $11.36 60
2015 Q2 4,568,827 $56,652,251 -$1,218,928 $12.40 50
2015 Q1 4,665,597 $59,409,000 +$3,314,380 $12.73 49
2014 Q4 4,404,733 $56,416,898 +$30,834,922 $12.80 42
2014 Q3 1,989,332 $27,013,000 +$4,935,805 $13.58 25
2014 Q2 1,629,886 $20,666,000 +$20,650,000 $12.68 22
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