Post Holdings, Inc.
Post Holdings, Inc. (POST) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · POST · as of Sep 30, 2025
Ownership Breakdown
431
Institutional Holders
▼ 13 vs Q2
$5.21B
Total Inst. Value
▼ $381.15M vs Q2
45.32M
Shares Outstanding
freeFloat 85.15%
48.49M
13F Shares Held
▼ 2.80M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
POST largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
VANGUARD GROUP INC grain mill products | 5.27M | 9.46% | 9.46% | $566.46B | Nov 7, 2025 | ▼ 125.7K |
BLACKROCK, INC. grain mill products | 4.28M | 7.69% | 7.69% | $460.41B | Nov 12, 2025 | ▼ 150.9K |
ROUTE ONE INVESTMENT COMPANY, L.P. grain mill products | 3.43M | 6.16% | 6.16% | $368.97B | Nov 14, 2025 | ▲ 19.0K |
CLARKSTON CAPITAL PARTNERS, LLC grain mill products | 2.90M | 5.21% | 5.21% | $312.11B | Nov 13, 2025 | ▼ 139.9K |
JPMORGAN CHASE & CO grain mill products | 2.84M | 5.09% | 5.09% | $304.96B | Nov 26, 2025 | ▲ 132.7K |
DIMENSIONAL FUND ADVISORS LP grain mill products | 2.81M | 5.05% | 5.05% | $302.27B | Nov 12, 2025 | ▲ 110.9K |
LONDON CO OF VIRGINIA grain mill products | 1.77M | 3.17% | 3.17% | $189.78B | Nov 14, 2025 | ▼ 77.5K |
STATE STREET CORP grain mill products | 1.49M | 2.67% | 2.67% | $159.66B | Nov 14, 2025 | ▲ 8.2K |
MANUFACTURERS LIFE INSURANCE COMPANY, THE grain mill products | 1.44M | 2.59% | 2.59% | $154.80B | Nov 14, 2025 | ▲ 126.5K |
T. ROWE PRICE INVESTMENT MANAGEMENT, INC. grain mill products | 1.26M | 2.26% | 2.26% | $135.28B | Nov 14, 2025 | ▼ 9.5K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
25
Increased
+2.30M shares2
New Positions
first time holders23
Decreased
−2.37M shares0
Sold Out
fully exitedNet shares change (top 50)
70.0K
+2.30M / −2.37M
Net new holders
+4
2 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
POST insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
10
Buy transactions
1
Sell transactions
10.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Zadoks Jeff A director | May 29, 2026 | Award | 120.98 | — | — | 288.736 | Form 4 ↗ |
SKARIE DAVID P director | May 29, 2026 | Award | 145.176 | — | — | 33.4K | Form 4 ↗ |
JOHNSON JENNIFER KUPERMAN director | May 29, 2026 | Award | 120.98 | — | — | 7.0K | Form 4 ↗ |
KEMPER DAVID W director | May 29, 2026 | Award | 187.52 | — | — | 20.7K | Form 4 ↗ |
ERB THOMAS C director | May 29, 2026 | Award | 120.98 | — | — | 7.0K | Form 4 ↗ |
CURL GREGORY L director | May 29, 2026 | Award | 120.98 | — | — | 7.7K | Form 4 ↗ |
BURWELL DOROTHY M director | May 29, 2026 | Award | 120.98 | — | — | 8.5K | Form 4 ↗ |
Atkinson Michelle Marie director | May 29, 2026 | Award | 120.98 | — | — | 288.736 | Form 4 ↗ |
CURL GREGORY L director | May 13, 2026 | Sale | 6,186 | $105.05 | $649.8K | 15.1K | Form 4 ↗ |
Zadoks Jeff A director | Apr 30, 2026 | Award | 106.07 | — | — | 167.671 | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Post Holdings, Inc. (POST) is primarily owned by institutional investors, who hold approximately 100.0% of total shares outstanding. Company insiders own approximately 14.85%, while retail and public investors account for the remaining 0.00%.
The largest institutional shareholder of Post Holdings, Inc. is VANGUARD GROUP INC, holding approximately 5.27 million shares — equal to 9.46% of outstanding shares — as of September 30, 2025.
A total of 431 institutional investors currently hold POST stock, with a combined institutional value of approximately $5.21 billion as of the most recent 13F filing period.
Frequently asked questions
POST ownershipPost Holdings, Inc. (POST) is primarily owned by institutional investors, who hold approximately 100.0% of shares. The largest shareholder is VANGUARD GROUP INC with a 9.46% stake. Company insiders hold 14.85%. Data sourced from SEC Form 13F as of September 30, 2025.