Insider at

04

Insider transactions

05
0 buys (P) 13 sells (S) Net: $-3,555,885 + 12 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

12 other filings hidden
DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
July 17, 2026 MPLT S 10b5-1 900 $38.17 $34,353 144,240 Direct -0.62% Disposed -75.7% (price as of 2026-10-05)
July 17, 2026 MPLT S 10b5-1 16,969 $37.61 $638,204 145,140 Direct -10.47% Disposed -75.3% (price as of 2026-10-05)
July 17, 2026 MPLT S 10b5-1 600 $36.51 $21,906 162,109 Direct -0.37% Disposed -74.6% (price as of 2026-10-05)
July 16, 2026 MPLT S 1,476 $37.44 $55,261 162,709 Direct -0.90% Disposed -75.2% (price as of 2026-10-05)
July 16, 2026 MPLT S 6,979 $36.66 $255,850 164,185 Direct -4.08% Disposed -74.7% (price as of 2026-10-05)
July 15, 2026 MPLT S 4,699 $36.94 $173,581 171,164 Direct -2.67% Disposed -74.9% (price as of 2026-10-05)
July 15, 2026 MPLT S 5,356 $36.13 $193,512 175,863 Direct -2.96% Disposed -74.3% (price as of 2026-10-05)
April 28, 2026 MPLT S 10b5-1 17,235 $30.33 $522,738 181,919 Direct -8.65% Disposed -69.4% (price as of 2026-10-05)
April 28, 2026 MPLT S 10b5-1 700 $30.83 $21,581 181,219 Direct -0.38% Disposed -69.9% (price as of 2026-10-05)
April 27, 2026 MPLT S 10b5-1 7,914 $28.94 $229,031 243,140 Direct -3.15% Disposed -68.0% (price as of 2026-10-05)
April 27, 2026 MPLT S 10b5-1 29,623 $29.60 $876,841 213,517 Direct -12.18% Disposed -68.7% (price as of 2026-10-05)
April 27, 2026 MPLT S 10b5-1 14,363 $30.46 $437,497 199,154 Direct -6.73% Disposed -69.6% (price as of 2026-10-05)
April 15, 2026 MPLT S 3,590 $26.61 $95,530 251,054 Direct -1.41% Disposed -65.1% (price as of 2026-10-05)

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.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
Aug. 17, 2026 MPLT Employee Stock Option (right to buy) Voting Common Stock (24,455) $11.24 Aug. 16, 2036 24,455 Acquired
Aug. 17, 2026 MPLT Employee Stock Option (Right to Buy) Voting Common Stock (2,813) $11.24 Aug. 16, 2036 2,813 Acquired
Feb. 5, 2026 MPLT Employee Stock Option (right to buy) Voting Common Stock (24,455) $15.70 Feb. 4, 2036 24,455 Acquired
Oct. 27, 2025 MPLT Employee Stock Option (right to buy) Voting Common Stock (124,022) $17.00 Oct. 26, 2035 124,022 Acquired
May 10, 2018 TPST Employee Stock Option (right to buy) Common Stock · May 10, 2028 5,000 Acquired
Feb. 8, 2018 TPST Stock Option (right to buy) Common Stock (128,645) $0.93 Feb. 8, 2028 128,645 Acquired
June 21, 2017 TPST Stock Option (right to buy) Common Stock (30,000) $1.46 June 21, 2017 30,000 Acquired

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

Initial ownership (Form 3) 10 holdings

07

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

DateTickerSecuritySharesOwnership
Oct. 27, 2025 MPLT Voting Common Stock 239,988 Direct
Oct. 27, 2025 MPLT Stock Option (Right to Buy)→ Voting Common Stock (16,440) 16,440 Direct
Oct. 27, 2025 MPLT Stock Option (Right to Buy)→ Voting Common Stock (10,960) 10,960 Direct
Oct. 27, 2025 MPLT Stock Option (Right to Buy)→ Voting Common Stock (7,440) 7,440 Direct
June 23, 2017 TPST Stock Option (right to buy)→ Common Stock (10,000) 10,000 Direct
June 23, 2017 TPST Stock Option (right to buy)→ Common Stock (10,000) 10,000 Direct
June 23, 2017 TPST Stock Option (right to buy)→ Common Stock (7,500) 7,500 Direct
June 23, 2017 TPST Stock Option (right to buy)→ Common Stock (4,000) 4,000 Direct
June 23, 2017 TPST Stock Option (right to buy)→ Common Stock (1,000) 1,000 Direct
June 23, 2017 TPST Stock Option (right to buy)→ Common Stock (15,000) 15,000 Direct

Compensation (DEF 14A)

08

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

Fiscal yearSalaryBonusStock awards Option awardsNon-equity incentivePension changeOtherTotal
2018 $252,247 $94,500 · $104,253 · · $203,783 $654,783
2017 $229,008 $187,500 · $51,493 · · $8,977 $476,978

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