Comparable stake leader
BC Partners Holdings Ltd
SEC ownership of Cyxtera Technologies, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001794905.
Disclosed value leader
BC Partners Holdings Ltd
Comparable rows
0/20
Latest evidence
06 Jun 2023
- Parsed ownership sources
-
3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BC Partners Holdings Ltd
Ranking: Comparable ownership first, then disclosed value
- Latest parsed ownership date
-
06 Jun 2023
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001794905
- Issuer location
- Coral Gables, FL
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
1 signal
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Cyxtera Technologies, Inc. (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
BC Partners Holdings Ltd
Disclosed value leader
BC Partners Holdings Ltd
Comparable rows
0/20
Latest evidence
06 Jun 2023
3/4/5
Highest disclosed value: $11,075,507
20 rows are not safely comparable across share classes.
Showing 1-8 of 20 holder rows.
Quick read
BC Partners Holdings Ltd has the largest disclosed position value at $11.08M.
0 of 20 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 BC Partners Holdings Ltd's linked filing trail.
Disclosed position value
Top 5
BC Partners Holdings Ltd
$11.08M
Manuel D. Medina
$1.46M
Medina Capital Fund II - SIS Hold...
$1.46M
Jeffrey C. Smith
$1.23M
Starboard Value & Opportunity Mas...
$1.23M
Value bars compare disclosed positions; verify each figure against the linked filing evidence.
Detailed SEC evidence table Showing 1-8 of 20 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BC Partners Holdings Ltd |
3/4/5
10%+ Owner
|
—
class O/S missing
|
$11,075,507
174,417,440 shares
|
— | 01 Oct 2022 |
| Manuel D. Medina |
3/4/5
Director, 10%+ Owner
|
—
class O/S missing
|
$1,455,963
22,928,560 shares
|
— | 01 Oct 2022 |
| Medina Capital Fund II - SIS Holdco, LP |
3/4/5
10%+ Owner
|
—
class O/S missing
|
$1,455,631
22,923,324 shares
|
— | 29 Jul 2022 |
| Jeffrey C. Smith |
3/4/5
10%+ Owner
|
—
class O/S missing
|
$1,229,272
19,358,610 shares
|
— | 06 Jun 2023 |
| Starboard Value & Opportunity Master Fund L LP |
3/4/5
10%+ Owner
|
—
class O/S missing
|
$1,229,064
19,355,337 shares
|
— | 06 Jun 2023 |
| Starboard Value LP |
3/4/5
10%+ Owner
|
—
class O/S missing
|
$1,229,064
19,355,337 shares
|
— | 06 Jun 2023 |
| Gregory L. Waters |
3/4/5
Director
|
—
class O/S missing
|
$132,295
2,083,376 shares
|
— | 18 May 2023 |
| Martin D. McNulty Jr. |
3/4/5
Chief Executive Officer, Director
|
—
class O/S missing
|
$32,077
505,150 shares
|
— | 29 Jul 2021 |
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
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 10 Jul 2025.
Buys
$0
Insiders: 0
Sells
$0
Insiders: 0
Net
$0
Shares: 0
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 28 reporting-owner rows connected to Cyxtera Technologies, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
28
Largest Forms 3/4/5 holder
BC Partners Holdings Ltd
Net 12M change
$0
Latest report
06 Jun 2023
Recent insider transactions for Cyxtera Technologies, Inc.
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| No insider transactions were found in the last 12 months for this issuer. | ||||||||||
* marks a reported price that did not pass the local price check.