Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 13 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

No open-market trades on record; showing all filings.

DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
April 20, 2026 ALMR C 320,511 · · 650,032 Direct +97.27% Acquired (price as of 2026-09-14)
April 20, 2026 ALMR C 72,853 · · 722,885 Direct +11.21% Acquired (price as of 2026-09-14)
April 20, 2026 ALMR J 722,885 · · 0 Direct -100.00% Disposed (price as of 2026-09-14)
April 20, 2026 ALMR J 722,885 · · 722,885 Direct · Acquired (price as of 2026-09-14)
April 20, 2026 ALMR A 37,220 · · 760,105 Direct +5.15% Acquired (price as of 2026-09-14)
April 20, 2026 ALMR C 247,311 · · 0 Direct -100.00% Disposed (price as of 2026-09-14)
April 20, 2026 ALMR C 73,200 · · 0 Direct -100.00% Disposed (price as of 2026-09-14)
April 20, 2026 ALMR C 176,160 · · 0 Direct -100.00% Disposed (price as of 2026-09-14)
April 20, 2026 ALMR J 300,883 · · 0 Direct -100.00% Disposed (price as of 2026-09-14)
April 20, 2026 ALMR J 300,883 · · 300,883 Direct · Acquired (price as of 2026-09-14)
April 20, 2026 ALMR J 12,190 · · 0 Direct -100.00% Disposed (price as of 2026-09-14)
April 20, 2026 ALMR J 12,190 · · 12,190 Direct · Acquired (price as of 2026-09-14)
April 16, 2026 ALMR A 163,358 · · 163,358 Direct · Acquired (price as of 2026-09-14)

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
April 20, 2026 ALMR Class A Common Stock Class B Common Stock (247,311) · · 247,311 Disposed
April 20, 2026 ALMR Founders Preferred Stock Class B Common Stock (73,200) · · 73,200 Disposed
April 20, 2026 ALMR Series A-1 Preferred Stock Class B Common Stock (72,853) · · 176,160 Disposed
April 20, 2026 ALMR Stock Option (Right to Buy) Class B Common Stock (300,883) $3.34 Jan. 15, 2035 300,883 Disposed
April 20, 2026 ALMR Stock Option (Right to Buy) Common Stock (300,883) $3.34 Jan. 15, 2035 300,883 Acquired
April 20, 2026 ALMR Stock Option (Right to Buy) Class B Common Stock (12,190) $7.60 Jan. 14, 2036 12,190 Disposed
April 20, 2026 ALMR Stock Option (Right to Buy) Common Stock (12,190) $7.60 Jan. 14, 2036 12,190 Acquired
April 16, 2026 ALMR Stock Option (Right to Buy) Common Stock (163,358) $17.00 April 15, 2036 163,358 Acquired

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

Initial ownership (Form 3) 6 holdings

07

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

DateTickerSecuritySharesOwnership
April 16, 2026 ALMR Class B Common Stock 329,521 Direct
April 16, 2026 ALMR Class A Common Stock→ Class B Common Stock (247,311) 247,311 Direct
April 16, 2026 ALMR Founders Preferred Stock→ Class B Common Stock (73,200) 73,200 Direct
April 16, 2026 ALMR Series A-1 Preferred Stock→ Class B Common Stock (72,853) 72,853 Direct
April 16, 2026 ALMR Stock Option (Right to Buy)→ Class B Common Stock (300,883) 300,883 Direct
April 16, 2026 ALMR Stock Option (Right to Buy)→ Class B Common Stock (12,190) 12,190 Direct