City Office REIT, Inc.
City Office REIT, Inc. (CIO) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · CIO · as of Sep 30, 2025
Ownership Breakdown
151
Institutional Holders
▲ 20 vs Q2
$207.98M
Total Inst. Value
▲ $75.11M vs Q2
40.36M
Shares Outstanding
freeFloat 80.44%
29.88M
13F Shares Held
▲ 5.00M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
CIO largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
NEWTYN MANAGEMENT, LLC real estate investment trusts | 3.94M | 9.76% | 9.76% | $27.41B | Nov 14, 2025 | — held |
BLACKROCK, INC. real estate investment trusts | 3.27M | 8.11% | 8.11% | $22.78B | Nov 12, 2025 | ▼ 605.3K |
GLAZER CAPITAL, LLC real estate investment trusts | 2.27M | 5.63% | 5.63% | $15.82B | Nov 13, 2025 | NEW |
VANGUARD GROUP INC real estate investment trusts | 2.14M | 5.30% | 5.30% | $14.88B | Nov 7, 2025 | ▼ 58.7K |
NOMURA HOLDINGS INC real estate investment trusts | 1.76M | 4.36% | 4.36% | $12.25B | Nov 14, 2025 | ▲ 155 |
FIL LTD real estate investment trusts | 1.61M | 4.00% | 4.00% | $11.24B | Nov 13, 2025 | NEW |
MORGAN STANLEY real estate investment trusts | 1.16M | 2.88% | 2.88% | $8.10B | May 27, 2026 | ▲ 443.9K |
CAPULA MANAGEMENT LTD real estate investment trusts | 1.01M | 2.51% | 2.51% | $7.05B | Nov 14, 2025 | NEW |
MAGNETAR FINANCIAL LLC real estate investment trusts | 989.7K | 2.45% | 2.45% | $6.89B | Nov 13, 2025 | NEW |
GEODE CAPITAL MANAGEMENT, LLC real estate investment trusts | 932.4K | 2.31% | 2.31% | $6.49B | Nov 12, 2025 | ▼ 6.3K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
17
Increased
+1.17M shares15
New Positions
first time holders15
Decreased
−3.50M shares0
Sold Out
fully exitedNet shares change (top 50)
2.33M
+1.17M / −3.50M
Net new holders
+17
15 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
CIO insider trading · insider activity
Source: SEC Form 4
0
Buy transactions
17
Sell transactions
0.00
Buy/Sell ratio
$2M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Murski Mark Wilhelm director | Jan 9, 2026 | D-Return | 38,337 | $0.01 | $383.37 | 0 | Form 4 ↗ |
Murski Mark Wilhelm director | Jan 9, 2026 | D-Return | 21,392 | — | — | 0 | Form 4 ↗ |
Mirza Sabah director | Jan 9, 2026 | D-Return | 18,813 | $0.01 | $188.13 | 0 | Form 4 ↗ |
Mirza Sabah director | Jan 9, 2026 | D-Return | 21,392 | — | — | 0 | Form 4 ↗ |
Mazan Michael director | Jan 9, 2026 | D-Return | 39,000 | $0.01 | $390 | 0 | Form 4 ↗ |
Mazan Michael director | Jan 9, 2026 | D-Return | 18,830 | — | — | 0 | Form 4 ↗ |
McLernon John R. director | Jan 9, 2026 | D-Return | 7,500 | $0.01 | $75 | 0 | Form 4 ↗ |
McLernon John R. director | Jan 9, 2026 | D-Return | 21,392 | — | — | 0 | Form 4 ↗ |
Farrar James Thomas Chief Executive Officer | Jan 9, 2026 | D-Return | 416,085 | — | — | 0 | Form 4 ↗ |
Farrar James Thomas Chief Executive Officer | Jan 9, 2026 | D-Return | 200,000 | $0.01 | $2.0K | 0 | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
City Office REIT, Inc. (CIO) is primarily owned by institutional investors, who hold approximately 74.0% of total shares outstanding. Company insiders own approximately 19.56%, while retail and public investors account for the remaining 6.41%.
The largest institutional shareholder of City Office REIT, Inc. is NEWTYN MANAGEMENT, LLC, holding approximately 3.94 million shares — equal to 9.76% of outstanding shares — as of September 30, 2025.
A total of 151 institutional investors currently hold CIO stock, with a combined institutional value of approximately $207,981,837 as of the most recent 13F filing period.
Frequently asked questions
CIO ownershipCity Office REIT, Inc. (CIO) is primarily owned by institutional investors, who hold approximately 74.0% of shares. The largest shareholder is NEWTYN MANAGEMENT, LLC with a 9.76% stake. Company insiders hold 19.56%. Data sourced from SEC Form 13F as of September 30, 2025.