Comparable stake leader
BlackRock, Inc.
SEC ownership of COPT DEFENSE PROPERTIES
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000860546.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
26 May 2026
- Public ticker
- CDP on NYSE
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
26 May 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0000860546
- Issuer location
- Columbia, MD
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of COPT DEFENSE PROPERTIES (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
26 May 2026
13F
13D/G
3/4/5
Lead comparable stake: 15%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 15%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
15%
VANGUARD PORTFOLIO MANAGEMENT LLC
10%
ALLIANCEBERNSTEIN L.P.
7.5%
VANGUARD CAPITAL MANAGEMENT LLC
5.3%
Lisa G. Trimberger
0.02%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
15%
from 13D/G
|
$651,803,836
21,300,778 shares
|
— | 31 Mar 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
13D/G
Company · Vanguard Portfolio Management
|
10%
from 13D/G
|
$362,887,450
11,859,067 shares
|
— | 31 Mar 2026 |
| ALLIANCEBERNSTEIN L.P. |
13D/G
13F
Company
|
7.5%
|
$245,771,259
8,457,373 shares
|
+$64,208,622 | 30 Sep 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5.3%
|
$183,865,547
6,008,678 shares
|
$0 | 31 Mar 2026 |
| Lisa G. Trimberger |
3/4/5
Director
|
0.02%
|
$737,154
24,090 shares
|
-$241,965 | 14 May 2026 |
| Myers Matthew T. |
3/4/5
SVP-CAO & CONTROLLER
|
0.01%
|
$356,290
11,000 shares
|
— | 01 Mar 2026 |
| Robert L. Denton |
3/4/5
Director
|
0%
|
$123,141
3,803 shares
|
-$126,994 | 26 May 2026 |
| STATE STREET CORP |
13F
Company
|
6%
|
$211,303,520
6,836,577 shares
|
— | 31 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$1,575,641.
Buys
$0
Insiders: 0
Sells
$1,575,641
Insiders: 4
Net
-$1,575,641
Shares: -49,152
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 49,152
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 35,720 | $0 | $1,152,575 | -$1,152,575 |
| 3-6 | 0 | 5,536 | $0 | $181,100 | -$181,100 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 7,896 | $0 | $241,965 | -$241,965 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-16 of 16 reporting-owner rows connected to COPT DEFENSE PROPERTIES. Open a relationship link for the CIK-to-CIK filing trail.
Rows
16
Largest Forms 3/4/5 holder
Stephen E. Budorick
Net 12M change
-$1,575,640
Latest report
29 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Stephen E. Budorick | PRESIDENT/CEO, Director | $23,883,519 | Mixed | 01 Mar 2026 | ||
| Anthony Mifsud | Evp And Cfo | $8,899,985 | Mixed | 01 Mar 2026 | ||
| Britt A. Snider | Evp & Coo | $1,887,084 | Mixed | 01 Mar 2026 | ||
| C. Taylor Pickett | Director | $1,829,012 | -$1,025,581 | -36% | Mixed | 29 May 2026 |
| Philip L. Hawkins | Director | $1,071,002 | -$181,100 | -14% | Mixed | 14 May 2026 |
| Steven D. Kesler | Director | $1,052,585 | Mixed | 13 Dec 2023 | ||
| Lisa G. Trimberger | Director | $737,154 | -$241,965 | -25% | Median | 14 May 2026 |
| Greg J. Thor | Svp Cao & Controller | $461,055 | Mixed | 28 Mar 2022 | ||
| Todd W. Hartman | Evp & Coo | $403,817 | Mixed | 01 Mar 2023 | ||
| Letitia A. Long | Director | $394,416 | Mixed | 14 May 2026 | ||
| Raymond Lee Owens | Director | $394,416 | Mixed | 14 May 2026 | ||
| Myers Matthew T. | Svp Cao & Controller | $356,290 | Mixed | 01 Mar 2026 | ||
| David M. Jacobstein | Director | $243,751 | Mixed | 04 Jun 2021 | ||
| Robert L. Denton | Director | $123,141 | -$126,994 | -51% | Filing P/S | 26 May 2026 |
| Essye B. Miller | Director | Mixed | 14 May 2026 | |||
| Thomas F. Brady | Director | Mixed | 09 May 2024 |
Recent insider transactions for COPT DEFENSE PROPERTIES
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| C. Taylor Pickett | CDP | Common Shares | Sale | -67.7% | $1,025,581 | $32.25 | -31,798 | 15,188 | 29 May 2026 | Direct |
| Robert L. Denton | CDP | Common Shares | Sale | -50.8% | $126,994 | $32.38 | -3,922 | 3,803 | 26 May 2026 | Direct |
| Essye B. Miller | CDP | Profit Interest Units | Award | 3,803 | 3,803 | 14 May 2026 | Direct | |||
| Lisa G. Trimberger | CDP | Common Shares | Award | 18.8% | 3,803 | 24,090 | 14 May 2026 | Direct | ||
| Letitia A. Long | CDP | Profit Interest Units | Award | 18.8% | 3,803 | 24,003 | 14 May 2026 | Direct | ||
| Raymond Lee Owens | CDP | Profit Interest Units | Award | 18.8% | 3,803 | 24,003 | 14 May 2026 | Direct | ||
| C. Taylor Pickett | CDP | Profit Interest Units | Award | 23.8% | 7,511 | 39,126 | 14 May 2026 | Direct | ||
| Robert L. Denton | CDP | Common Shares | Award | 97% | 3,803 | 7,725 | 14 May 2026 | Direct | ||
| Philip L. Hawkins | CDP | Profit Interest Units | Award | 23.6% | 7,448 | 38,988 | 14 May 2026 | Direct | ||
| Robert L. Denton | CDP | Common Units-CDPLP | Conversion of derivative security | 0 | 142,764 | 13 May 2026 | Direct | |||
| Robert L. Denton | CDP | Common Units-CDPLP | Conversion of derivative security | 0 | 143,264 | 29 Apr 2026 | Direct | |||
| Robert L. Denton | CDP | Common Units-CDPLP | Conversion of derivative security | -1.37% | -2,000 | 144,264 | 03 Mar 2026 | Direct | ||
| Stephen E. Budorick | CDP | Profit Interest Units | Award | 5.75% | 61,114 | 1,124,411 | 01 Mar 2026 | Direct | ||
| Britt A. Snider | CDP | Common Shares | Award | 373.4% | 11,203 | 14,203 | 01 Mar 2026 | Direct | ||
| Britt A. Snider | CDP | Profit Interest Units | Award | 7.07% | 3,734 | 56,529 | 01 Mar 2026 | Direct | ||
| Anthony Mifsud | CDP | Common Shares | Award | 13.6% | 8,149 | 67,834 | 01 Mar 2026 | Direct | ||
| Anthony Mifsud | CDP | Profit Interest Units | Award | 2.59% | 8,149 | 322,600 | 01 Mar 2026 | Direct | ||
| Myers Matthew T. | CDP | Common Shares | Award | 27.8% | 2,390 | 11,000 | 01 Mar 2026 | Direct | ||
| Myers Matthew T. | CDP | Common Shares | Tax liability | -9.94% | -950 | 8,610 | 01 Mar 2026 | Direct | ||
| Philip L. Hawkins | CDP | Common Shares | Sale | -26.7% | $181,100 | $32.71 | -5,536 | 15,188 | 23 Feb 2026 | Direct |
| Robert L. Denton | CDP | Common Units-CDPLP | Conversion of derivative security | -1.35% | -2,000 | 146,264 | 10 Feb 2026 | Direct | ||
| Anthony Mifsud | CDP | Profit Interest Units | Award | 21.3% | 55,217 | 314,451 | 05 Feb 2026 | Direct | ||
| Stephen E. Budorick | CDP | Profit Interest Units | Award | 20.3% | 179,704 | 1,063,297 | 05 Feb 2026 | Direct | ||
| Robert L. Denton | CDP | Common Units-CDPLP | Conversion of derivative security | -0.34% | -500 | 148,264 | 23 Dec 2025 | Direct | ||
| Robert L. Denton | CDP | Common Units-CDPLP | Conversion of derivative security | -1% | -1,500 | 148,764 | 03 Dec 2025 | Direct | ||
| Myers Matthew T. | CDP | Common Shares | Tax liability | -2.55% | -250 | 9,560 | 01 Dec 2025 | Direct | ||
| Anthony Mifsud | CDP | Common Units-CDPLP | Gift | -7.24% | -17,400 | 223,008 | 12 Nov 2025 | Direct | ||
| Robert L. Denton | CDP | Common Units-CDPLP | Conversion of derivative security | -1.64% | -2,500 | 150,264 | 03 Nov 2025 | Direct | ||
| Robert L. Denton | CDP | Common Units-CDPLP | Conversion of derivative security | -0.65% | -1,000 | 152,764 | 25 Sep 2025 | Direct | ||
| Lisa G. Trimberger | CDP | Common Shares | Sale | -100% | $91,560 | $30.52 | -3,000 | 0 | 17 Sep 2025 | See footnote |
| Lisa G. Trimberger | CDP | Common Shares | Sale | -19.4% | $150,405 | $30.72 | -4,896 | 20,287 | 17 Sep 2025 | Direct |
| Robert L. Denton | CDP | Common Units-CDPLP | Conversion of derivative security | -0.97% | -1,500 | 153,764 | 05 Sep 2025 | Direct | ||
| Robert L. Denton | CDP | Common Units-CDPLP | Conversion of derivative security | -1.27% | -2,000 | 155,264 | 04 Aug 2025 | Direct |
* marks a reported price that did not pass the local price check.