Comparable stake leader
BANK OF MONTREAL /CAN/
SEC ownership of Cable One, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001632127.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
14 May 2026
- Public ticker
- CABO on NYSE
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BANK OF MONTREAL /CAN/
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BANK OF MONTREAL /CAN/
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
14 May 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001632127
- Issuer location
- Phoenix, AZ
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 Cable One, 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
BANK OF MONTREAL /CAN/
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
14 May 2026
13D/G
13F
3/4/5
Lead comparable stake: 8.4%
13D/G row: BANK OF MONTREAL /CAN/
Showing 1-8 of 50 holder rows.
Quick read
BANK OF MONTREAL /CAN/ leads the comparable SEC ownership view at 8.4%.
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 BANK OF MONTREAL /CAN/'s linked filing trail.
Comparable ownership
Top 5
BANK OF MONTREAL /CAN/
8.4%
Burgundy Asset Management Ltd.
8%
D. E. SHAW & CO, L.P.
6.9%
BlackRock, Inc.
6.2%
PRIVATE MANAGEMENT GROUP INC
5.5%
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 |
|---|---|---|---|---|---|
| BANK OF MONTREAL /CAN/ |
13D/G
13F
Bank of Montreal · Company
|
8.4%
|
$43,825,248
471,442 shares
|
$0 | 31 Dec 2025 |
| Burgundy Asset Management Ltd. |
13D/G
|
8%
|
$42,014,202
451,960 shares
|
$0 | 31 Dec 2025 |
| D. E. SHAW & CO, L.P. |
13D/G
|
6.9%
|
$36,029,592
392,351 shares
|
+$7,685,987 | 31 Mar 2026 |
| BlackRock, Inc. |
13F
13D/G
Company
|
6.2%
from 13D/G
|
$65,479,387
717,897 shares
|
— | 31 Mar 2026 |
| PRIVATE MANAGEMENT GROUP INC |
13D/G
13F
Company
|
5.5%
|
$42,254,973
311,133 shares
|
$0 | 30 Jun 2025 |
| Rothschild & Co Wealth Management UK Ltd |
13F
13D/G
Company · Rothschild and Co Wealth Management UK Limited
|
4.9%
from 13D/G
|
$25,546,462
280,084 shares
|
— | 31 Mar 2026 |
| AMERICAN CENTURY INVESTMENT MANAGEMENT INC |
13D/G
|
4.2%
|
$31,466,470
237,107 shares
|
-$15,735,823 | 30 Jun 2025 |
| CANADA PENSION PLAN INVESTMENT BOARD |
13F
13D/G
Company
|
0.04%
from 13D/G
|
$556,381
6,100 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 buying over the last 12 months. Net value: +$99,960.
Buys
$99,960
Insiders: 1
Sells
$0
Insiders: 0
Net
+$99,960
Shares: +998
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 998
Shares: 0
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 998 | 0 | $99,960 | $0 | +$99,960 |
| 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 24 reporting-owner rows connected to Cable One, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
24
Largest Forms 3/4/5 holder
Thomas Sinnickson Gayner
Net 12M change
+$99,960
Latest report
14 May 2026
Recent insider transactions for Cable One, 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Brad D. Brian | CABO | Common Stock, par value $0.01 | Award | 91.2% | 3,911 | 8,201 | 14 May 2026 | Direct | ||
| Katharine B. Weymouth | CABO | Common Stock, par value $0.01 | Award | 140.1% | 3,031 | 5,195 | 14 May 2026 | Direct | ||
| Wallace R. Weitz | CABO | Common Stock, par value $0.01 | Award | 29.1% | 4,986 | 22,126 | 14 May 2026 | Direct | ||
| P. Robert Bartolo | CABO | Common Stock, par value $0.01 | Award | 199.9% | 3,031 | 4,547 | 14 May 2026 | Direct | ||
| Deborah J. Kissire | CABO | Common Stock, par value $0.01 | Award | 91.4% | 3,031 | 6,349 | 14 May 2026 | Direct | ||
| Sherrese M. Smith | CABO | Common Stock, par value $0.01 | Award | 166.7% | 4,791 | 7,665 | 14 May 2026 | Direct | ||
| Mary E. Meduski | CABO | Common Stock, par value $0.01 | Award | 139.9% | 5,035 | 8,634 | 14 May 2026 | Direct | ||
| Todd M. Koetje | CABO | Common Stock, par value $0.01 | Purchase | 14.9% | $99,960 | $100.16 | 998 | 7,696 | 03 Mar 2026 | Direct |
| James A. Holanda | CABO | RSUs | Award | 44,004 | 44,004 | 26 Feb 2026 | Direct | |||
| Todd M. Koetje | CABO | Common Stock, par value $0.01 | Tax liability | -2.28% | -156 | 6,698 | 02 Feb 2026 | Direct | ||
| Todd M. Koetje | CABO | Common Stock, par value $0.01 | Award | 47.2% | 2,198 | 6,854 | 02 Feb 2026 | Direct | ||
| Margaret Masoner Detz | CABO | Common Stock, par value $0.01 | Award | 34.8% | 1,422 | 5,503 | 02 Feb 2026 | Direct | ||
| Kenneth E. Johnson | CABO | Common Stock, par value $0.01 | Tax liability | -0.93% | -70 | 7,464 | 02 Feb 2026 | Direct | ||
| Kenneth E. Johnson | CABO | Common Stock, par value $0.01 | Award | 22% | 1,357 | 7,534 | 02 Feb 2026 | Direct | ||
| Anthony John Mokry | CABO | Common Stock, par value $0.01 | Tax liability | -13.3% | -250 | 1,624 | 03 Jan 2026 | Direct | ||
| Anthony John Mokry | CABO | Phantom PSUs | Award | 7,488 | 7,488 | 03 Jan 2026 | Direct | |||
| Anthony John Mokry | CABO | Phantom RSUs | Award | 4,992 | 4,992 | 03 Jan 2026 | Direct | |||
| Christopher J. Arntzen | CABO | Common Stock, par value $0.01 | Tax liability | -7.88% | -161 | 1,883 | 03 Jan 2026 | Direct | ||
| Christopher J. Arntzen | CABO | Phantom PSUs | Award | 7,488 | 7,488 | 03 Jan 2026 | Direct | |||
| Christopher J. Arntzen | CABO | Phantom RSUs | Award | 4,992 | 4,992 | 03 Jan 2026 | Direct | |||
| Todd M. Koetje | CABO | Common Stock, par value $0.01 | Tax liability | -8.27% | -420 | 4,656 | 03 Jan 2026 | Direct | ||
| Todd M. Koetje | CABO | Phantom PSUs | Award | 11,520 | 11,520 | 03 Jan 2026 | Direct | |||
| Todd M. Koetje | CABO | Phantom RSUs | Award | 7,680 | 7,680 | 03 Jan 2026 | Direct | |||
| Kenneth E. Johnson | CABO | Common Stock, par value $0.01 | Tax liability | -6.32% | -417 | 6,177 | 03 Jan 2026 | Direct | ||
| Kenneth E. Johnson | CABO | Phantom PSUs | Award | 13,824 | 13,824 | 03 Jan 2026 | Direct | |||
| Kenneth E. Johnson | CABO | Phantom RSUs | Award | 9,216 | 9,216 | 03 Jan 2026 | Direct | |||
| Margaret Masoner Detz | CABO | Phantom PSUs | Award | 7,488 | 7,488 | 03 Jan 2026 | Direct | |||
| Margaret Masoner Detz | CABO | Phantom RSUs | Award | 4,992 | 4,992 | 03 Jan 2026 | Direct | |||
| Christopher J. Arntzen | CABO | Common Stock, par value $0.01 | Tax liability | -0.92% | -19 | 2,044 | 01 Oct 2025 | Direct | ||
| Christopher J. Arntzen | CABO | Common Stock, par value $0.01 | Tax liability | -4.31% | -93 | 2,063 | 01 Aug 2025 | Direct |
* marks a reported price that did not pass the local price check.