Comparable stake leader
WELLINGTON MANAGEMENT GROUP LLP
SEC ownership of SK TELECOM CO LTD
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001015650.
Disclosed value leader
BlackRock, Inc.
Comparable rows
2/50
Latest evidence
30 Jun 2026
- Public ticker
- SKM on NYSE
- Parsed ownership sources
-
13F and 13D/G
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
WELLINGTON MANAGEMENT GROUP LLP
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
2 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
WELLINGTON MANAGEMENT GROUP LLP
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
30 Jun 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001015650
- Issuer location
- Seoul
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 SK TELECOM CO LTD (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
WELLINGTON MANAGEMENT GRO...
Disclosed value leader
BlackRock, Inc.
Comparable rows
2/50
Latest evidence
30 Jun 2026
13F
13D/G
Lead comparable stake: 1.5%
48 rows are not safely comparable across share classes.
13D/G row: WELLINGTON MANAGEMENT GROUP LLP
Showing 1-8 of 50 holder rows.
Quick read
WELLINGTON MANAGEMENT GROUP LLP leads the comparable SEC ownership view at 1.5%.
2 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 WELLINGTON MANAGEMENT GROUP LLP's linked filing trail.
Comparable ownership
Top 2
WELLINGTON MANAGEMENT GROUP LLP
1.5%
Stanley-Laman Group, Ltd.
0%
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 |
|---|---|---|---|---|---|
| WELLINGTON MANAGEMENT GROUP LLP |
13F
13D/G
Company
|
1.5%
from 13D/G
|
$1,080,093
33,585 shares
|
— | 30 Jun 2026 |
| Stanley-Laman Group, Ltd. |
13F
Company
|
0%
|
$570,580
10,000 shares
|
— | 30 Jun 2026 |
| BlackRock, Inc. |
13F
Company
|
—
class O/S missing
|
$161,836,415
5,032,227 shares
|
— | 30 Jun 2026 |
| MORGAN STANLEY |
13F
Company
|
—
class O/S missing
|
$128,457,513
3,994,323 shares
|
— | 30 Jun 2026 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. |
13F
Company
|
—
class O/S missing
|
$85,444,000
2,656,789 shares
|
— | 30 Jun 2026 |
| Robeco Institutional Asset Management B.V. |
13F
Company
|
—
class O/S missing
|
$82,221,578
2,556,641 shares
|
— | 30 Jun 2026 |
| Mawer Investment Management Ltd. |
13F
Company
|
—
class O/S missing
|
$54,933,975
1,708,146 shares
|
— | 30 Jun 2026 |
| TWO SIGMA INVESTMENTS, LP |
13F
Company
|
—
class O/S missing
|
$50,017,805
1,555,280 shares
|
— | 30 Jun 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
Insider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 22 Aug 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 1-1 of 1 reporting-owner rows connected to SK TELECOM CO LTD. Open a relationship link for the CIK-to-CIK filing trail.
Rows
1
Largest Forms 3/4/5 holder
Taehee Kim
Net 12M change
$0
Latest report
20 Feb 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Taehee Kim | Investor Relations Officer | Mixed | 20 Feb 2026 |
Recent insider transactions for SK TELECOM CO LTD
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Taehee Kim | SKM | Common Stock | 0 | 4,000 | 20 Feb 2026 | Direct | ||||
| Taehee Kim | SKM | Common Stock | 0 | 4,000 | 19 Feb 2026 | Direct |
* marks a reported price that did not pass the local price check.