Tiedemann Michael

CIK 1958484 · View on SEC EDGAR ↗

Insider Activist

First SEC filing: Jan. 13, 2023 · Latest: March 31, 2026

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Insider at

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 18 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

18 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
May 23, 2024 ALTI P 20,000 $4.52 $90,400 472,514 Direct +4.42% Acquired -11.7% (price as of 2026-08-21)
May 21, 2024 ALTI P 21,072 $4.41 $92,928 452,514 Direct +4.88% Acquired -9.5% (price as of 2026-08-21)
May 21, 2024 ALTI P 22,296 $4.39 $97,879 431,442 Direct +5.45% Acquired -9.1% (price as of 2026-08-21)
May 20, 2024 ALTI P 20,000 $4.53 $90,600 409,146 Direct +5.14% Acquired -11.9% (price as of 2026-08-21)
May 20, 2024 ALTI P 20,000 $4.55 $91,000 389,146 Direct +5.42% Acquired -12.3% (price as of 2026-08-21)
May 16, 2024 ALTI P 60,000 $4.66 $279,600 369,146 Direct +19.41% Acquired -14.4% (price as of 2026-08-21)

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
Feb. 15, 2025 ALTI Restricted Stock Units Class A Common Stock (57,910) — — 57,910 Disposed
Feb. 15, 2025 ALTI Restricted Stock Units Class A Common Stock (25,546) — — 25,546 Disposed
March 11, 2024 ALTI Class B Common Stock Class A Common Stock (150,000) — — 150,000 Disposed
Feb. 15, 2024 ALTI Restricted Stock Units Class A Common Stock (25,546) — — 25,546 Disposed
June 7, 2023 ALTI Warrant Class A Common Stock (171,672) — — 171,672 Disposed
June 7, 2023 ALTI Warrant Class A Common Stock (67,917) — — 67,917 Disposed
June 7, 2023 ALTI Warrant Class A Common Stock (253,307) — — 253,307 Disposed
June 7, 2023 ALTI Warrant Class A Common Stock (585,198) — — 585,198 Disposed
May 31, 2023 ALTI Restricted Stock Units Class A Common Stock (76,639) — — 76,639 Acquired

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

Initial ownership (Form 3) 8 holdings

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

Date Ticker Security Shares Ownership
Jan. 13, 2023 ALTI Class B Common Stock→ Class B Common Stock (5,065,196) 5,065,196 Direct
Jan. 13, 2023 ALTI Class B Common Stock→ Class B Common Stock (2,500,103) 2,500,103 Indirect
Jan. 13, 2023 ALTI Class B Common Stock→ Class B Common Stock (670,334) 670,334 Indirect
Jan. 13, 2023 ALTI Class B Common Stock→ Class B Common Stock (1,694,408) 1,694,408 Indirect
Jan. 13, 2023 ALTI Warrants to purchase Class A Common Stock→ Class A Common Stock (585,198) 585,198 Direct
Jan. 13, 2023 ALTI Warrants to purchase Class A Common Stock→ Class A Common Stock (253,307) 253,307 Indirect
Jan. 13, 2023 ALTI Warrants to purchase Class A Common Stock→ Class A Common Stock (67,917) 67,917 Indirect
Jan. 13, 2023 ALTI Warrants to purchase Class A Common Stock→ Class A Common Stock (171,672) 171,672 Indirect