Summit Materials, Inc. (SUM) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2024-12-26

Summit Materials, Inc. (SUM) — no SEC Form 4 insider filings recorded in the last 90 days. InsiderAlpha tracks every SUM SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About Summit Materials, Inc. (SUM)

SEC CIK	0001621563

Recent SUM Insider Transactions (Form 4)

Date	Insider	Role	Transaction	Shares	Price	Value	Filing
2024-12-20	Anderson Karli S.	See Remarks	M — Option exercise	2.4K	—	—	SEC
2024-12-20	Anderson Karli S.	See Remarks	M — Option exercise	6.1K	—	—	SEC
2024-12-20	Anderson Karli S.	See Remarks	M — Option exercise	13.6K	—	—	SEC
2024-12-20	Anderson Karli S.	See Remarks	F — Tax withholding / forfeiture	9.7K	$50.50	$489K	SEC
2024-12-20	Noonan Anne P	President & CEO	M — Option exercise	36.2K	—	—	SEC
2024-12-20	Noonan Anne P	President & CEO	M — Option exercise	71.5K	—	—	SEC
2024-12-20	Noonan Anne P	President & CEO	M — Option exercise	16.6K	—	—	SEC
2024-12-20	Noonan Anne P	President & CEO	F — Tax withholding / forfeiture	54.4K	$50.50	$2.75M	SEC
2024-12-20	DePriest Charles	See remarks	M — Option exercise	4.2K	—	—	SEC
2024-12-20	DePriest Charles	See remarks	M — Option exercise	11.1K	—	—	SEC
2024-12-20	DePriest Charles	See remarks	F — Tax withholding / forfeiture	7.4K	$50.50	$373K	SEC
2024-12-20	Anderson Craig Scott	EVP & Chief Financial Officer	M — Option exercise	2.5K	—	—	SEC
2024-12-20	Anderson Craig Scott	EVP & Chief Financial Officer	M — Option exercise	7.5K	—	—	SEC
2024-12-20	Anderson Craig Scott	EVP & Chief Financial Officer	M — Option exercise	17.1K	—	—	SEC
2024-12-20	Anderson Craig Scott	EVP & Chief Financial Officer	F — Tax withholding / forfeiture	11.8K	$50.50	$598K	SEC

All transactions sourced from SEC EDGAR Form 4 filings for Summit Materials, Inc. (SUM). Updated in real time as new filings are submitted to the SEC.

Recent Insider Filings

2024-12-26 — Anderson Karli S. (See Remarks)
2024-12-26 — Noonan Anne P (President & CEO)
2024-12-26 — Loomes David (See Remarks)
2024-12-26 — DePriest Charles (See remarks)
2024-12-26 — Anderson Craig Scott (EVP & Chief Financial Officer)

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in SUM insider filings:

P	Open-market purchase by the insider
S	Open-market sale by the insider
A	Grant, award, or other acquisition from the issuer
M	Exercise or conversion of derivative security (e.g. options)
F	Payment of exercise price or tax liability via share withholding
G	Bona-fide gift of securities
D	Disposition to the issuer (e.g. share buyback participation)
J	Other acquisition or disposition
X	Exercise of in-the-money or at-the-money derivative security
C	Conversion of derivative security
V	Transaction voluntarily reported earlier than required

SUM Insider Trading — FAQ

What is the latest insider trade for SUM?: Summit Materials, Inc. (SUM) had 0 insider filings in the last 90 days, with the most recent on 2024-12-26. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying SUM stock?: 0 insider purchases of SUM were filed in the last 90 days.
How many insiders are selling SUM stock?: 0 insider sales of SUM were filed in the last 90 days.
Where can I see SUM SEC filings (Form 4, 10-K, 10-Q, 8-K)?: InsiderAlpha aggregates every SUM SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Learn More

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