POST insider buying – Post Holdings, Inc.
25 insider purchases since 2016 worth $96.2M by 7 different insiders. Last 12 months: 1 purchases, $176,274. Most recent filing: 2025-11-25.
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits. 13 older purchases (before the 5-year window) are listed in the table below.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| STIRITZ WILLIAM P Director | $92.0M 7× · 1,162,196 sh | 2016-02-08 2025-08-19 | 1× · $32.3M last 2026-09-01 | 4,504,036 shares as of 2026-09-03 | Sold part |
| ERB THOMAS C Director | $2.4M 9× · 27,000 sh | 2021-11-22 2024-08-13 | – | 38,675 shares as of 2026-02-05 | Holds - never sold |
| KEMPER DAVID W Director | $1.1M 3× · 12,300 sh | 2017-11-30 2025-11-24 | 1× · $989,994 last 2025-02-11 | 33,122 shares as of 2026-02-05 | Holds (sold earlier) |
| WESTPHAL MARK W Officer | $366,000 2× · 4,000 sh | 2019-08-29 2020-08-21 | – | 214,930 shares as of 2025-11-20 | Holds - never sold |
| VITALE ROBERT V CEO | $200,518 1× · 2,720 sh | 2018-02-06 2018-02-06 | 3× · $10.6M last 2025-02-24 | 1,191,047 shares as of 2025-11-20 | Sold part |
| Zadoks Jeff A CFO | $99,175 1× · 1,353 sh | 2018-02-06 2018-02-06 | 1× · $3.5M last 2024-11-27 | 199,586 shares as of 2026-08-27 | Sold part |
| CALLISON EDWIN H Director | $51,560 2× · 580 sh | 2017-05-10 2019-02-11 | – | 23,525 shares as of 2022-04-04 | Holds - never sold |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2026 | 0 | – | – | 3 | $33.7M |
| 2025 | 3 | $24.5M | 2 | 11 | $14.5M |
| 2024 | 2 | $330,120 | 1 | 12 | $8.6M |
| 2023 | 3 | $596,160 | 1 | 5 | $1.0M |
| 2022 | 3 | $1.3M | 1 | 8 | $2.7M |
| 2021 | 1 | $207,280 | 1 | 4 | $750,703 |
| 2020 | 2 | $880,660 | 2 | 5 | $961,572 |
| 2019 | 4 | $16.7M | 3 | 5 | $3.7M |
| 2018 | 3 | $7.5M | 3 | 3 | $453,268 |
| 2017 | 2 | $223,053 | 2 | – | – |
| 2016 | 2 | $44.0M | 1 | 1 | $1.9M |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2025-11-25 | KEMPER DAVID W | Director | 1,800 | $97.93 | $176,274 | +6.1% | SEC |
| 2025-08-21 | STIRITZ WILLIAM P | Director | 36,000 | $109.53 | $3.9M | +0.8% | SEC |
| 2025-06-09 | STIRITZ WILLIAM P | Director | 186,740 | $109.12 | $20.4M | +4.5% | SEC |
| 2024-08-13 | ERB THOMAS C | Director | 2,000 | $112.94 | $225,880 | +6.0% | SEC |
| 2024-02-08 | ERB THOMAS C | Director | 1,000 | $104.24 | $104,240 | +3.1% | SEC |
| 2023-11-21 | ERB THOMAS C | Director | 5,000 | $84.48 | $422,400 | +19.4% | SEC |
| 2023-06-07 | ERB THOMAS C | Director | 1,000 | $86.76 | $86,760 | +4.0% | SEC |
| 2023-05-19 | ERB THOMAS C | Director | 1,000 | $87.00 | $87,000 | +4.2% | SEC |
| 2022-05-10 | ERB THOMAS C | Director | 12,400 | $81.26 | $1.0M | +128.2% | SEC |
| 2022-03-02 | ERB THOMAS C | Director | 1,100 | $79.20 | $87,120 | +13.9% | SEC |
| 2022-02-08 | ERB THOMAS C | Director | 1,500 | $105.38 | $158,070 | +23.4% | SEC |
| 2021-11-23 | ERB THOMAS C | Director | 2,000 | $103.64 | $207,280 | +66.7% | SEC |
| 2020-08-25 | WESTPHAL MARK W | Officer | 2,000 | $84.87 | $169,740 | +4.0% | SEC |
| 2020-08-12 | KEMPER DAVID W | Director | 8,000 | $88.86 | $710,920 | +69.0% | SEC |
| 2019-08-30 | WESTPHAL MARK W | Officer | 2,000 | $98.13 | $196,260 | +5.2% | SEC |
| 2019-02-22 | CALLISON EDWIN H | Director | 280 | $100.56 | $28,157 | +1400.0% | SEC |
| 2019-02-12 | STIRITZ WILLIAM P | Director | 35,755 | $97.75 | $3.5M | +1.3% | SEC |
| 2019-02-08 | STIRITZ WILLIAM P | Director | 134,059 | $96.71 | $13.0M | +53.6% | SEC |
| 2018-02-14 | STIRITZ WILLIAM P | Director | 100,000 | $71.99 | $7.2M | +7.1% | SEC |
| 2018-02-07 | Zadoks Jeff A | CFO | 1,353 | $73.30 | $99,175 | +19.3% | SEC |
| 2018-02-07 | VITALE ROBERT V | CEO | 2,720 | $73.72 | $200,518 | +43.9% | SEC |
| 2017-12-04 | KEMPER DAVID W | Director | 2,500 | $79.86 | $199,650 | +59.5% | SEC |
| 2017-05-12 | CALLISON EDWIN H | Director | 300 | $78.01 | $23,403 | SEC | |
| 2016-11-23 | STIRITZ WILLIAM P | Director | 120,000 | $75.48 | $9.1M | +92.3% | SEC |
| 2016-02-09 | STIRITZ WILLIAM P | Director | 549,642 | $63.65 | $35.0M | +103.2% | SEC |
Insider sales
| Filed | Insider | Role | Shares | Avg price | Value | Type | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-03 | STIRITZ WILLIAM P | Other | 384,132 | $84.06 | $32.3M | Sale | SEC |
| 2026-05-14 | CURL GREGORY L | Director | 6,186 | $105.05 | $649,839 | Sale | SEC |
| 2026-02-10 | CURL GREGORY L | Director | 6,983 | $114.31 | $798,227 | Sale | SEC |
| 2025-12-08 | HARPER BRADLY A | Officer | 1,658 | $96.69 | $160,312 | Sale | SEC |
| 2025-11-26 | CATOGGIO NICOLAS | CEO | 10,000 | $100.21 | $1.0M | Sale | SEC |
| 2025-06-09 | CATOGGIO NICOLAS | CEO | 1,750 | $108.97 | $190,698 | Sale | SEC |
| 2025-03-10 | CATOGGIO NICOLAS | CEO | 5,000 | $117.00 | $585,000 | Sale | SEC |
| 2025-03-05 | HARPER BRADLY A | Officer | 2,000 | $114.59 | $229,180 | Sale | SEC |
| 2025-03-04 | CATOGGIO NICOLAS | CEO | 5,000 | $114.50 | $572,500 | Sale | SEC |
| 2025-02-26 | CATOGGIO NICOLAS | CEO | 5,000 | $116.50 | $582,500 | Sale | SEC |
| 2025-02-26 | VITALE ROBERT V | CEO | 63,243 | $115.84 | $7.3M | Sale | SEC |
| 2025-02-25 | GRAY DIEDRE J | Officer | 15,157 | $115.80 | $1.8M | Sale | SEC |
| 2025-02-13 | CATOGGIO NICOLAS | CEO | 10,000 | $111.73 | $1.1M | Sale | SEC |
| 2025-02-12 | KEMPER DAVID W | Director | 8,939 | $110.75 | $989,994 | Sale | SEC |
| 2024-12-06 | HARPER BRADLY A | Officer | 1,000 | $120.09 | $120,090 | Sale | SEC |
Showing the latest 15 of 57 sales of $50,000+ since 2016.
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
Get every new insider purchase the day it's filed
Daily report with all SEC insider buys, cluster buys, company events and the crypto money-flow radar.
Get started free