Summit Materials, Inc.
Total Trades
1
Buys
0
Sells
1
Largest Trade
$100K–$500K
Insiders
1
Institutional Funds
1
Inst. Value
<$1K
Activist Filings
21
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Gaskill Christopher Burke | See Remarks | SELL | $100K–$500K | 8K | $27.63 | May 26, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 1 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| HUNTINGTON NATIONAL BANK | 2 | <$1K | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
T. Rowe Price Associates, Inc.
SC 13G/A · Feb 14, 2025
3.0%
5.4M shares
SC 13D/A · Feb 11, 2025
0.0%
0 shares
SC 13D/A · Nov 25, 2024
31.2%
5.5B shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Nov 14, 2024
5.2%
9.2M shares
SC 13G/A · Nov 12, 2024
7.0%
12.3M shares
Massachusetts Financial Services Company ("MFS") 04-2747644
SC 13G/A · Nov 12, 2024
4.4%
7.6M shares
SC 13G · Nov 8, 2024
5.7%
10.0M shares
SC 13G/A · Nov 4, 2024
7.0%
12.3M shares
SC 13G · Oct 24, 2024
5.7%
10.0M shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Feb 14, 2024
7.4%
8.8M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
10.0%
12.0M shares
Capital International Investors 95-1411037
SC 13G/A · Feb 9, 2024
0.4%
492K shares
SC 13G · Jan 24, 2024
9.5%
11.4M shares
SC 13D · Jan 22, 2024
31.4%
54.7M shares
The Vanguard Group - 23-1945930
SC 13G/A · Apr 10, 2023
10.0%
11.9M shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Feb 14, 2023
7.6%
9.0M shares
Capital International Investors 95-1411037
SC 13G/A · Feb 13, 2023
6.3%
7.4M shares
Dimensional Fund Advisors LP 30-0447847
SC 13G · Feb 10, 2023
5.1%
6.0M shares
SC 13G/A · Feb 3, 2023
7.9%
9.2M shares
T. ROWE PRICE ASSOCIATES, INC. 52-0556948
SC 13G/A · Feb 14, 2022
7.4%
8.9M shares
Capital International Investors 95-1411037
SC 13G · Feb 11, 2022
5.4%
6.4M shares