William J Peters

CIK 1263136 · View on SEC EDGAR ↗

Insider

First SEC filing: June 24, 2014 · Latest: June 24, 2014

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Insider transactions

0 buys (P) 1 sells (S) Net: $-183,886 + 71 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

71 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
Aug. 7, 2026 AMPH S 10b5-1 8,180 $22.48 $183,886 172,846 Direct -4.52% Disposed -3.9% (price as of 2026-08-21)
March 4, 2025 AMPH S 10b5-1 4,231 $27.54 $116,522 97,363 Direct -4.16% Disposed -21.6% (price as of 2026-08-21)
Nov. 6, 2024 AMPH S 10b5-1 7,426 $52.05 $386,523 94,103 Direct -7.31% Disposed -58.5% (price as of 2026-08-21)
July 31, 2024 AMPH S 10b5-1 10,282 $44.23 $454,773 94,103 Direct -9.85% Disposed -51.2% (price as of 2026-08-21)
June 27, 2024 AMPH S 10b5-1 2,961 $40.85 $120,957 94,738 Direct -3.03% Disposed -47.1% (price as of 2026-08-21)
June 27, 2024 AMPH S 10b5-1 635 $41.29 $26,219 94,103 Direct -0.67% Disposed -47.7% (price as of 2026-08-21)
March 6, 2024 AMPH S 10b5-1 13,404 $46.30 $620,605 116,222 Direct -10.34% Disposed -53.3% (price as of 2026-08-21)
March 6, 2024 AMPH S 10b5-1 4,681 $46.98 $219,913 111,541 Direct -4.03% Disposed -54.0% (price as of 2026-08-21)
March 6, 2024 AMPH S 10b5-1 51 $48.00 $2,448 111,490 Direct -0.05% Disposed -55.0% (price as of 2026-08-21)
Nov. 14, 2023 AMPH S 10b5-1 14,868 $56.53 $840,488 101,360 Direct -12.79% Disposed -61.8% (price as of 2026-08-21)
Nov. 14, 2023 AMPH S 10b5-1 30,162 $55.67 $1,679,119 116,228 Direct -20.60% Disposed -61.2% (price as of 2026-08-21)
Nov. 14, 2023 AMPH S 10b5-1 14,220 $54.76 $778,687 146,390 Direct -8.85% Disposed -60.6% (price as of 2026-08-21)
Sept. 6, 2023 AMPH S 10b5-1 59 $52.26 $3,083 101,360 Direct -0.06% Disposed -58.7% (price as of 2026-08-21)
Sept. 6, 2023 AMPH S 10b5-1 60,684 $51.75 $3,140,397 101,419 Direct -37.44% Disposed -58.3% (price as of 2026-08-21)
June 15, 2023 AMPH S 10b5-1 13,000 $52.79 $686,270 105,603 Direct -10.96% Disposed -59.1% (price as of 2026-08-21)
June 15, 2023 AMPH S 10b5-1 12,000 $50.79 $609,480 118,603 Direct -9.19% Disposed -57.5% (price as of 2026-08-21)
June 15, 2023 AMPH S 10b5-1 11,868 $48.79 $579,040 130,603 Direct -8.33% Disposed -55.7% (price as of 2026-08-21)
June 2, 2023 AMPH S 10b5-1 11,000 $46.35 $509,850 105,603 Direct -9.43% Disposed -53.4% (price as of 2026-08-21)
May 18, 2023 AMPH S 10b5-1 10,500 $44.35 $465,675 105,148 Direct -9.08% Disposed -51.3% (price as of 2026-08-21)
April 17, 2023 AMPH S 10b5-1 5,632 $42.35 $238,515 105,148 Direct -5.08% Disposed -49.0% (price as of 2026-08-21)
April 13, 2023 AMPH S 10b5-1 4,868 $42.35 $206,160 105,148 Direct -4.42% Disposed -49.0% (price as of 2026-08-21)
April 10, 2023 AMPH S 10b5-1 10,032 $40.35 $404,791 105,148 Direct -8.71% Disposed -46.5% (price as of 2026-08-21)
March 15, 2023 AMPH S 10b5-1 12,776 $36.43 $465,430 118,451 Direct -9.74% Disposed -40.7% (price as of 2026-08-21)
March 1, 2023 AMPH S 10b5-1 10,974 $36.33 $398,685 100,614 Direct -9.83% Disposed -40.5% (price as of 2026-08-21)
Aug. 9, 2022 AMPH S 10b5-1 10,000 $38.35 $383,500 100,480 Direct -9.05% Disposed -43.7% (price as of 2026-08-21)
June 30, 2022 AMPH S 10b5-1 18,386 $34.95 $642,591 100,480 Direct -15.47% Disposed -38.2% (price as of 2026-08-21)
June 17, 2022 AMPH S 10b5-1 5,512 $32.05 $176,660 100,480 Direct -5.20% Disposed -32.6% (price as of 2026-08-21)
March 16, 2022 AMPH S 3,760 $34.36 $129,194 114,144 Direct -3.19% Disposed -37.1% (price as of 2026-08-21)
March 16, 2022 AMPH S 47,017 $33.93 $1,595,287 117,904 Direct -28.51% Disposed -36.3% (price as of 2026-08-21)

Showing latest 100 of 213 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
Aug. 7, 2026 AMPH Employee Stock Option (right to buy) Common Stock (5,053) $19.79 March 15, 2028 5,053 Disposed
March 9, 2026 AMPH Employee Stock Option (right to buy) Common Stock (121,071) $19.21 March 9, 2036 121,071 Acquired
March 10, 2025 AMPH Employee Stock Option (right to buy) Common Stock (78,039) $28.41 March 10, 2035 78,039 Acquired
March 4, 2025 AMPH Employee Stock Option (right to buy) Common Stock (7,490) $13.35 March 16, 2027 7,490 Disposed
Nov. 6, 2024 AMPH Employee Stock Option (right to buy) Common Stock (7,426) $13.03 March 16, 2030 7,426 Disposed
July 31, 2024 AMPH Employee Stock Option (right to buy) Common Stock (10,282) $20.23 March 15, 2029 10,282 Disposed
March 6, 2024 AMPH Employee Stock Option (right to buy) Common Stock (8,826) $11.33 March 17, 2026 8,826 Disposed
March 4, 2024 AMPH Employee Stock Option (right to buy) Common Stock (40,955) $46.68 March 4, 2034 40,955 Acquired
Nov. 14, 2023 AMPH Employee Stock Option (right to buy) Common Stock (38,000) $13.03 March 16, 2030 38,000 Disposed
Nov. 14, 2023 AMPH Employee Stock Option (right to buy) Common Stock (21,250) $20.23 March 15, 2029 21,250 Disposed
Sept. 6, 2023 AMPH Employee Stock Option (right to buy) Common Stock (25,250) $13.03 March 16, 2030 25,250 Disposed
Sept. 6, 2023 AMPH Employee Stock Option (right to buy) Common Stock (21,250) $20.23 March 15, 2029 21,250 Disposed
Sept. 6, 2023 AMPH Employee Stock Option (right to buy) Common Stock (10,000) $19.79 March 15, 2028 10,000 Disposed
June 15, 2023 AMPH Employee Stock Option (right to buy) Common Stock (36,868) $19.79 March 15, 2028 36,868 Disposed
June 2, 2023 AMPH Employee Stock Option (right to buy) Common Stock (11,000) $13.35 March 16, 2027 11,000 Disposed
May 18, 2023 AMPH Employee Stock Option (right to buy) Common Stock (10,500) $13.35 March 16, 2027 10,500 Disposed
April 17, 2023 AMPH Employee Stock Option (right to buy) Common Stock (5,632) $13.35 March 16, 2027 5,632 Disposed
April 13, 2023 AMPH Employee Stock Option (right to buy) Common Stock (4,868) $13.35 March 16, 2027 4,868 Disposed
April 10, 2023 AMPH Employee Stock Option (right to buy) Common Stock (10,032) $13.35 March 16, 2027 10,032 Disposed
March 15, 2023 AMPH Employee Stock Option (right to buy) Common Stock (6,688) $14.95 March 26, 2025 6,688 Disposed
March 6, 2023 AMPH Employee Stock Option (right to buy) Common Stock (50,416) $35.13 March 6, 2033 50,416 Acquired
March 1, 2023 AMPH Employee Stock Option (right to buy) Common Stock (10,974) $11.33 March 17, 2026 10,974 Disposed
Aug. 9, 2022 AMPH Employee Stock Option (right to buy) Common Stock (10,000) $13.35 March 16, 2027 10,000 Disposed
June 30, 2022 AMPH Employee Stock Option (right to buy) Common Stock (18,386) $14.95 March 26, 2025 18,386 Disposed
March 16, 2022 AMPH Employee Stock Option (right to buy) Common Stock (50,777) $14.40 April 21, 2024 50,777 Disposed
March 15, 2022 AMPH Employee Stock Option (right to buy) Common Stock (50,743) $34.74 March 15, 2032 50,743 Acquired
March 7, 2022 AMPH Employee Stock Option (right to buy) Common Stock (13,026) $13.35 March 16, 2027 13,026 Disposed
Feb. 25, 2022 AMPH Employee Stock Option (right to buy) Common Stock (23,000) $14.95 March 26, 2025 23,000 Disposed
Feb. 8, 2022 AMPH Employee Stock Option (right to buy) Common Stock (10,000) $14.95 March 26, 2025 10,000 Disposed
Jan. 10, 2022 AMPH Employee Stock Option (right to buy) Common Stock (16,000) $14.40 April 21, 2024 16,000 Disposed
Jan. 7, 2022 AMPH Employee Stock Option (right to buy) Common Stock (31,776) $14.40 April 21, 2024 31,776 Disposed
Dec. 30, 2021 AMPH Employee Stock Option (right to buy) Common Stock (10,000) $14.40 April 21, 2024 10,000 Disposed
Dec. 21, 2021 AMPH Employee Stock Option (right to buy) Common Stock (8,256) $14.40 April 21, 2024 8,256 Disposed
Dec. 16, 2021 AMPH Employee Stock Option (right to buy) Common Stock (1,744) $14.40 April 21, 2024 1,744 Disposed
Nov. 11, 2021 AMPH Employee Stock Option (right to buy) Common Stock (10,000) $11.33 March 17, 2026 10,000 Disposed
July 7, 2021 AMPH Employee Stock Option (right to buy) Common Stock (10,000) $11.33 March 17, 2026 10,000 Disposed
May 19, 2021 AMPH Employee Stock Option (right to buy) Common Stock (7,209) $19.82 May 19, 2031 7,209 Acquired
March 17, 2021 AMPH Employee Stock Option (right to buy) Common Stock (78,833) $17.99 March 17, 2031 78,833 Acquired
July 6, 2020 AMPH Employee Stock Option (right to buy) Common Stock (10,000) $11.33 March 17, 2026 10,000 Disposed
March 16, 2020 AMPH Employee Stock Option (right to buy) Common Stock (94,350) $13.03 March 16, 2030 94,350 Acquired
Sept. 16, 2019 AMPH Employee Stock Option (right to buy) Common Stock (9,800) $11.33 March 17, 2026 9,800 Disposed
March 15, 2019 AMPH Employee Stock Option (right to buy) Common Stock (57,725) $20.23 March 15, 2029 57,725 Acquired
March 4, 2019 AMPH Employee Stock Option (right to buy) Common Stock (1,500) $13.35 March 16, 2027 1,500 Disposed
Feb. 15, 2019 AMPH Employee Stock Option (right to buy) Common Stock (10,016) $13.35 March 16, 2027 10,016 Disposed
Dec. 3, 2018 AMPH Employee Stock Option (right to buy) Common Stock (10,000) $11.33 March 17, 2026 10,000 Disposed
Nov. 9, 2018 AMPH Employee Stock Option (right to buy) Common Stock (10,000) $11.33 March 17, 2026 10,000 Disposed
Nov. 8, 2018 AMPH Employee Stock Option (right to buy) Common Stock (19,800) $11.33 March 17, 2026 19,800 Disposed
March 15, 2018 AMPH Employee Stock Option (right to buy) Common Stock (51,921) $19.79 March 15, 2028 51,921 Acquired
March 13, 2018 AMPH Employee Stock Option (right to buy) Common Stock (19,801) $11.33 March 17, 2026 19,801 Disposed
March 16, 2017 AMPH Employee Stock Option (right to buy) Common Stock (84,064) $13.35 March 16, 2027 84,064 Acquired
March 17, 2016 AMPH Employee Stock Option (right to buy) Common Stock (119,201) $11.33 March 17, 2026 119,201 Acquired
March 26, 2015 AMPH Employee Stock Option (right to buy) Common Stock (58,074) $14.95 March 26, 2025 58,074 Acquired

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

Initial ownership (Form 3) 2 holdings

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

Date Ticker Security Shares Ownership
June 24, 2014 AMPH Common Stock — Direct
June 24, 2014 AMPH Stock Option (Right to Buy)→ Common Stock (118,553) 118,553 Direct

Compensation (DEF 14A)

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

AMPH

Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2025 $649,846 $370,308 — — $73,000 — $57,524 $3,238,682
2024 $625,527 $292,616 — — $121,000 — $56,713 $2,910,861
2023 $612,579 $283,232 — — $261,000 — $55,475 $2,893,300

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