William P Stiritz

CIK 1052058 · View on SEC EDGAR ↗

Insider Activist

First SEC filing: April 3, 2007 · Latest: March 5, 2026

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Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 61 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

61 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Aug. 19, 2025 POST P 36,000 $109.53 $3,943,080 4,334,667 Direct +0.84% Acquired -27.8% (price as of 2026-08-20)
March 31, 2006 M P 7,500 $73.31 $549,825 203,628 Direct +3.82% Acquired -37.1% (price as of 2026-08-20)
March 31, 2006 M P 3,000 $73.33 $219,990 80,000 Indirect +3.90% Acquired -37.1% (price as of 2026-08-20)
March 31, 2006 M P 5,400 $73.41 $396,414 77,000 Indirect +7.54% Acquired -37.2% (price as of 2026-08-20)
March 31, 2006 M P 6,600 $73.40 $484,440 71,600 Indirect +10.15% Acquired -37.2% (price as of 2026-08-20)
March 31, 2006 M P 1,100 $73.36 $80,696 65,000 Indirect +1.72% Acquired -37.2% (price as of 2026-08-20)
March 31, 2006 M P 4,300 $73.38 $315,534 63,900 Indirect +7.21% Acquired -37.2% (price as of 2026-08-20)
March 31, 2006 M P 9,600 $73.41 $704,736 59,600 Indirect +19.20% Acquired -37.2% (price as of 2026-08-20)
March 31, 2006 M P 36,500 $73.45 $2,680,925 50,000 Indirect +270.37% Acquired -37.2% (price as of 2026-08-20)
March 31, 2006 M P 4,500 $73.44 $330,480 13,500 Indirect +50.00% Acquired -37.2% (price as of 2026-08-20)
March 31, 2006 M P 4,000 $73.43 $293,720 9,000 Indirect +80.00% Acquired -37.2% (price as of 2026-08-20)
March 31, 2006 M P 5,000 $73.42 $367,100 5,000 Indirect — Acquired -37.2% (price as of 2026-08-20)
March 31, 2006 M P 25,800 $73.80 $1,904,040 196,128 Direct +15.15% Acquired -37.5% (price as of 2026-08-20)
March 31, 2006 M P 6,000 $73.79 $442,740 170,328 Direct +3.65% Acquired -37.5% (price as of 2026-08-20)
March 31, 2006 M P 9,700 $73.71 $714,987 164,328 Direct +6.27% Acquired -37.5% (price as of 2026-08-20)
March 31, 2006 M P 3,000 $73.50 $220,500 154,628 Direct +1.98% Acquired -37.3% (price as of 2026-08-20)
March 31, 2006 M P 1,000 $73.47 $73,470 151,628 Direct +0.66% Acquired -37.3% (price as of 2026-08-20)
March 31, 2006 M P 4,500 $43.46 $195,570 150,628 Direct +3.08% Acquired 6.1% (price as of 2026-08-20)
March 31, 2006 M P 20,400 $73.42 $1,497,768 146,128 Direct +16.23% Acquired -37.2% (price as of 2026-08-20)
March 31, 2006 M P 17,000 $73.41 $1,247,970 125,728 Direct +15.64% Acquired -37.2% (price as of 2026-08-20)
March 31, 2006 M P 11,200 $73.40 $822,080 108,728 Direct +11.48% Acquired -37.2% (price as of 2026-08-20)
March 31, 2006 M P 1,200 $73.37 $88,044 97,528 Direct +1.25% Acquired -37.2% (price as of 2026-08-20)
March 31, 2006 M P 42,500 $73.33 $3,116,525 96,328 Direct +78.96% Acquired -37.1% (price as of 2026-08-20)
March 31, 2006 M P 8,100 $73.17 $592,677 53,828 Direct +17.71% Acquired -37.0% (price as of 2026-08-20)
March 31, 2006 M P 6,900 $73.16 $504,804 45,728 Direct +17.77% Acquired -37.0% (price as of 2026-08-20)
March 31, 2006 M P 20,400 $73.15 $1,492,260 38,828 Direct +110.70% Acquired -37.0% (price as of 2026-08-20)
March 31, 2006 M P 300 $73.14 $21,942 18,428 Direct +1.65% Acquired -37.0% (price as of 2026-08-20)
March 31, 2006 M P 500 $73.12 $36,560 18,128 Direct +2.84% Acquired -37.0% (price as of 2026-08-20)
March 31, 2006 M P 6,000 $73.11 $438,660 17,628 Direct +51.60% Acquired -37.0% (price as of 2026-08-20)
March 31, 2006 M P 8,000 $73.10 $584,800 11,628 Direct +220.51% Acquired -36.9% (price as of 2026-08-20)
May 31, 2000 EPC P 70,500 $16.98 $1,197,090 978,900 Direct +7.76% Acquired 125.2% (price as of 2026-08-20)
May 30, 2000 EPC P 200,000 $16.58 $3,316,000 708,400 Direct +39.34% Acquired 130.6% (price as of 2026-08-20)
May 30, 2000 EPC P 197,700 $16.44 $3,250,188 906,100 Direct +27.91% Acquired 132.5% (price as of 2026-08-20)
May 30, 2000 EPC P 2,300 $16.38 $37,674 908,400 Direct +0.25% Acquired 133.4% (price as of 2026-08-20)
May 30, 2000 EPC P 40,000 $16.38 $655,200 44,576 Indirect +874.13% Acquired 133.4% (price as of 2026-08-20)
May 26, 2000 EPC P 100,000 $16.31 $1,631,000 284,157 Indirect +54.30% Acquired 134.4% (price as of 2026-08-20)
May 25, 2000 EPC P 100,000 $16.88 $1,688,000 184,157 Indirect +118.83% Acquired 126.5% (price as of 2026-08-20)
May 9, 2000 EPC P 50,000 $16.97 $848,500 84,157 Indirect +146.38% Acquired 125.3% (price as of 2026-08-20)
May 8, 2000 EPC P 130,000 $16.94 $2,202,200 508,400 Direct +34.36% Acquired 125.7% (price as of 2026-08-20)

Showing latest 100 of 145 transactions

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II)

Options, RSUs and convertible securities reported on Form 4 Table II.

Date Ticker Security Underlying Exercise price Expiration Shares A/D
Dec. 18, 2025 POST Post Holdings, Inc. Stock Equivalents Common Stock (170,001) — — 170,001 Disposed
Dec. 17, 2025 POST Post Holdings, Inc. Stock Equivalents Common Stock (10,703) — — 10,703 Disposed
Dec. 16, 2025 POST Post Holdings, Inc. Stock Equivalents Common Stock (58) — — 58 Acquired
Nov. 28, 2025 POST Post Holdings, Inc. Stock Equivalents Common Stock (107) — — 107 Acquired
Oct. 31, 2025 POST Post Holdings, Inc. Stock Equivalents Common Stock (107) — — 107 Acquired
Sept. 30, 2025 POST Post Holdings, Inc. Stock Equivalents Common Stock (103) — — 103 Acquired
Aug. 29, 2025 POST Post Holdings, Inc. Stock Equivalents Common Stock (98) — — 98 Acquired
Sept. 23, 2009 MTN Restricted Share Unit Common Stock (2,968) — Sept. 23, 2009 2,968 Disposed
March 10, 2009 MTN Share Appreciation Rights Common Stock (296) — March 10, 2019 296 Acquired
Oct. 15, 2008 MTN Restricted Share Units Common Stock (1,811) — Oct. 15, 2008 1,811 Disposed
Sept. 23, 2008 MTN Restricted Share Units Common Stock (2,968) — Sept. 23, 2009 2,968 Acquired
March 31, 2008 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (188) $0.00 — 188 Acquired
Dec. 31, 2007 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (508) $0.00 — 508 Acquired
Dec. 31, 2007 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (231) $0.00 — 231 Acquired
Dec. 31, 2007 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (178) $0.00 — 178 Acquired
Oct. 15, 2007 MTN Restricted Share Units Common Stock (1,811) — Oct. 15, 2008 1,811 Acquired
Oct. 4, 2007 MTN Restricted Share Units Common Stock (2,809) — Oct. 4, 2007 2,809 Disposed
Sept. 28, 2007 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (167) $0.00 — 167 Acquired
June 29, 2007 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (166) $0.00 — 166 Acquired
March 31, 2007 M Phantom Stock Units Common Stock (383) — — 383 Acquired
March 31, 2007 M Phantom Stock Units Common Stock (385) — — 385 Acquired
March 30, 2007 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (181) $0.00 — 181 Acquired
Dec. 31, 2006 M Phantom Stock Units Common Stock (381) — — 381 Acquired
Dec. 31, 2006 M Phantom Stock Units Common Stock (383) — — 383 Acquired
Dec. 29, 2006 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (824) $0.00 — 824 Acquired
Dec. 29, 2006 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (337) $0.00 — 337 Acquired
Dec. 29, 2006 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (239) $0.00 — 239 Acquired
Oct. 4, 2006 MTN Restricted Share Units Common Stock (2,809) — Oct. 4, 2009 2,809 Acquired
Sept. 30, 2006 MTN Restricted Share Units Common Stock (3,750) — Sept. 30, 2006 3,750 Disposed
Sept. 30, 2006 M Phantom Stock Units Common Stock (306) — — 306 Acquired
Sept. 30, 2006 M Phantom Stock Units Common Stock (307) — — 307 Acquired
Sept. 29, 2006 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (207) $0.00 — 207 Acquired
June 30, 2006 M Phantom Stock Units Common Stock (363) — — 363 Acquired
June 30, 2006 M Phantom Stock Units Common Stock (367) — — 367 Acquired
June 30, 2006 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (298) $0.00 — 298 Acquired
May 19, 2006 M Options to Purchase Common Stock Common Stock (5,000) $72.47 May 19, 2016 5,000 Acquired
March 31, 2006 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (266) $0.00 — 266 Acquired
March 31, 2006 M Phantom Stock Units Common Stock (161) — — 161 Acquired
March 31, 2006 M Phantom Stock Units Common Stock (163) — — 163 Acquired
Dec. 31, 2005 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (1,133) $0.00 — 1,133 Acquired
Dec. 31, 2005 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (353) $0.00 — 353 Acquired
Dec. 31, 2005 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (328) $0.00 — 328 Acquired
Dec. 31, 2005 M Phantom Stock Units Common Stock (103) — — 103 Acquired
Dec. 31, 2005 M Phantom Stock Units Common Stock (159) — — 159 Acquired
Dec. 1, 2005 M Option to Purchase Common Stock Common Stock (833) $64.43 Dec. 1, 2015 833 Acquired
Dec. 1, 2005 M Option to Purchase Common Stock [F1] Common Stock (833) $64.43 Dec. 1, 2015 833 Acquired
Sept. 30, 2005 MTN Option to Purchase [F1] Common Stock (3,750) $0.00 — 3,750 Acquired
Sept. 30, 2005 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (251) $0.00 — 251 Acquired
Aug. 24, 2005 EPC Variable Forward Contract [F1] Energizer Holdings, Inc. Common Stock (1,000,000) — Feb. 24, 2010 1,000,000 Acquired
June 30, 2005 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (249) $0.00 — 249 Acquired
March 31, 2005 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (231) $0.00 — 231 Acquired
Feb. 2, 2005 EPC Variable Forward Contract Energizer Holdings, Inc. Common Stock (250,000) — Aug. 31, 2012 250,000 Acquired
Feb. 2, 2005 EPC Variable Forward Contract Energizer Holdings, Inc. Common Stock (500,000) — Aug. 31, 2012 500,000 Acquired
Jan. 28, 2005 EPC Variable Forward Contract Energizer Holdings, Inc. Common Stock (250,000) — Aug. 27, 2012 250,000 Acquired
Jan. 28, 2005 EPC Variable Forward Contract Energizer Holdings, Inc. Common Stock (500,000) — Aug. 27, 2012 500,000 Acquired
Dec. 31, 2004 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (298) $0.00 — 298 Acquired
Dec. 31, 2004 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (202) $0.00 — 202 Acquired
Nov. 12, 2004 BALL Variable Forward Contract Common Stock (200,000) — June 12, 2012 200,000 Acquired
Nov. 4, 2004 BALL Variable Forward Contract Common Stock (800,000) — June 4, 2012 800,000 Acquired
Sept. 30, 2004 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (226) $0.00 — 226 Acquired
Sept. 28, 2004 MTN Option to Purchase Common (15,000) $18.73 Sept. 28, 2014 15,000 Acquired
Sept. 9, 2004 BALL Stock Option (right to buy) Common Stock (2,000) $23.74 April 23, 2012 2,000 Disposed
Sept. 2, 2004 BALL Stock Option (right to buy) Common Stock (2,000) $23.74 April 23, 2012 2,000 Disposed
June 30, 2004 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (222) $0.00 — 222 Acquired
March 31, 2004 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (244) $0.00 — 244 Acquired
March 31, 2004 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (244) $0.00 — 244 Acquired
Dec. 31, 2003 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (417) $0.00 — 417 Acquired
Dec. 31, 2003 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (240) $0.00 — 240 Acquired
Nov. 20, 2003 MTN Option to Purchase Common Stock (2,500) $14.73 Nov. 20, 2013 2,500 Acquired
Sept. 30, 2003 EPC Phantom Stock Units in Deferred Compensation Plan Energizer Holdings, Inc. Common Stock (268) $0.00 Jan. 1, 2025 268 Acquired
May 8, 2000 EPC Non-Qualified Stock Option 05/08/00 Energizer Holdings, Inc. Common Stock (500,000) $17.00 May 7, 2010 500,000 Acquired
May 8, 2000 EPC Restricted Stock Equivalents Energizer Holdings, Inc. Comon Stock (130,000) — — 130,000 Acquired
May 1, 2000 EPC Phantom Stock Units in Deffered Compensation Plan Energizer Holdings, Inc. Common Stock (894) — — 894 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 1 holding

Securities held when first becoming an insider, per SEC Form 3.

Date Ticker Security Shares Ownership
Nov. 3, 2005 M Common Stock 3,628 Direct

Compensation (DEF 14A)

Matched by name from proxy statements (DEF 14A) — verify against the filing.

POST

Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2016 — — — — — — $120,132 $120,132
2015 $1 — — — — — $99,026 $3,315,721
2014 $1 — — — — — $183,229 $5,683,605

Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.