MOULDER LEON O JR

CIK 1228865 · View on SEC EDGAR ↗

Activist

First SEC filing: May 5, 2026 · Latest: May 5, 2026

On this page

Insider at

Insider transactions

10 buys (P) 0 sells (S) Net: $6,533,809 + 28 non-open-market transactions below Avg return of open purchases vs now: 80.1% 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

28 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
May 18, 2026 ZBIO P 60,000 $16.88 $1,012,800 96,928 Indirect +162.48% Acquired 89.0% (price as of 2026-08-21)
April 29, 2026 ZBIO P 35,000 $17.62 $616,700 1,786,039 Indirect +2.00% Acquired 81.0% (price as of 2026-08-21)
April 28, 2026 ZBIO P 25,000 $18.02 $450,500 1,751,039 Indirect +1.45% Acquired 77.0% (price as of 2026-08-21)
March 31, 2026 ZBIO P 34,000 $19.31 $656,540 1,726,039 Indirect +2.01% Acquired 65.2% (price as of 2026-08-21)
March 30, 2026 ZBIO P 20,000 $18.23 $364,600 1,692,039 Indirect +1.20% Acquired 75.0% (price as of 2026-08-21)
Feb. 2, 2026 ZBIO P 57,000 $17.96 $1,023,720 423,155 Direct +15.57% Acquired 77.6% (price as of 2026-08-21)
Jan. 9, 2026 ZBIO P 20,000 $16.55 $331,000 366,155 Direct +5.78% Acquired 92.7% (price as of 2026-08-21)
Jan. 8, 2026 ZBIO P 30,000 $16.30 $489,000 346,155 Direct +9.49% Acquired 95.7% (price as of 2026-08-21)
Jan. 7, 2026 ZBIO P 50,000 $16.38 $819,000 316,155 Direct +18.79% Acquired 94.7% (price as of 2026-08-21)
Oct. 7, 2025 ZBIO P 36,928 $20.85 $769,949 36,928 Indirect — Acquired 53.0% (price as of 2026-08-21)
Feb. 18, 2025 ZBIO P 25,000 $6.67 $166,750 266,155 Direct +10.37% Acquired 378.3% (price as of 2026-08-21)
Dec. 4, 2024 ZBIO P 45,000 $9.98 $449,100 241,155 Direct +22.94% Acquired 219.6% (price as of 2026-08-21)
Dec. 3, 2024 ZBIO P 25,000 $10.76 $269,000 196,155 Direct +14.61% Acquired 196.5% (price as of 2026-08-21)
Nov. 19, 2024 ZBIO P 2,500 $14.57 $36,425 171,155 Direct +1.48% Acquired 118.9% (price as of 2026-08-21)
Nov. 18, 2024 ZBIO P 7,500 $15.00 $112,500 168,655 Direct +4.65% Acquired 112.7% (price as of 2026-08-21)
Sept. 20, 2024 ZBIO P 2,633 $18.97 $49,948 1,672,039 Indirect +0.16% Acquired 68.2% (price as of 2026-08-21)
Sept. 20, 2024 ZBIO P 2,367 $17.88 $42,322 1,669,406 Indirect +0.14% Acquired 78.4% (price as of 2026-08-21)
Sept. 19, 2024 ZBIO P 5,000 $17.89 $89,450 1,667,039 Indirect +0.30% Acquired 78.3% (price as of 2026-08-21)
Sept. 18, 2024 ZBIO P 10,000 $17.91 $179,100 1,662,039 Indirect +0.61% Acquired 78.1% (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
June 15, 2026 ZBIO Stock Option (Right to Buy) Common Stock (500,000) $18.71 June 15, 2036 500,000 Acquired
June 10, 2025 ZBIO Stock Option (Right to Buy) Common Stock (400,000) $11.94 June 10, 2035 400,000 Acquired
Sept. 16, 2024 ZBIO Series B Convertible Preferred Stock Common Stock (48,254) — — 418,996 Disposed
Sept. 16, 2024 ZBIO Series B Convertible Preferred Stock Common Stock (372,017) — — 3,230,268 Disposed
Sept. 16, 2024 ZBIO Series A Convertible Preferred Stock Common Stock (108,381) — — 941,088 Disposed
Sept. 16, 2024 ZBIO Series Seed Convertible Preferred Stock Common Stock (164,523) — — 1,428,571 Disposed
Sept. 16, 2024 ZBIO Series B Convertible Preferred Stock Common Stock (48,254) — — 418,996 Disposed
Sept. 16, 2024 ZBIO Series B Convertible Preferred Stock Common Stock (372,017) — — 3,230,268 Disposed
Sept. 16, 2024 ZBIO Series A Convertible Preferred Stock Common Stock (108,381) — — 941,088 Disposed
Sept. 16, 2024 ZBIO Series Seed Convertible Preferred Stock Common Stock (164,523) — — 1,428,571 Disposed
Sept. 12, 2024 ZBIO Stock Option (Right to Buy) Common Stock (1,486,000) $17.00 Sept. 11, 2034 1,486,000 Acquired
Sept. 12, 2024 ZBIO Stock Option (Right to Buy) Common Stock (1,486,000) $17.00 Sept. 11, 2034 1,486,000 Acquired
May 23, 2024 DNTH Stock Option (Right to Buy) Common Stock (11,000) $21.77 May 22, 2034 11,000 Acquired
Sept. 11, 2023 DNTH Stock Option (Right to Buy) Common Stock (6,500) $11.20 Sept. 10, 2033 6,500 Acquired

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

Initial ownership (Form 3) 9 holdings

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

Date Ticker Security Shares Ownership
Sept. 12, 2024 ZBIO Common Stock 1,115,499 Indirect
Sept. 12, 2024 ZBIO Common Stock 4,520 Direct
Sept. 12, 2024 ZBIO Series Seed Convertible Preferred Stock→ Common Stock (164,523) 164,523 Indirect
Sept. 12, 2024 ZBIO Series A Convertible Preferred Stock→ Common Stock (108,381) 108,381 Direct
Sept. 12, 2024 ZBIO Series B Convertible Preferred Stock→ Common Stock (372,017) 372,017 Indirect
Sept. 12, 2024 ZBIO Series B Convertible Preferred Stock→ Common Stock (48,254) 48,254 Direct
Sept. 12, 2024 ZBIO Stock Option (Right to Buy)→ Common Stock (308,069) 308,069 Direct
Sept. 13, 2023 DNTH Common Stock 1,270,078 Indirect
Jan. 4, 2021 ZLAB Ordinary Shares 10,000 Direct