Gregory L Weaver

CIK 1251779 · View on SEC EDGAR ↗

Insider

First SEC filing: March 21, 2013 · Latest: March 21, 2013

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Insider transactions

2 buys (P) 0 sells (S) Net: $49,200 + 47 non-open-market transactions below Avg return of open purchases vs now: -9.4% 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

47 other filings hidden
Date Ticker Code Shares Price Value Owned after Δ own A/D vs now
April 1, 2026 ALT P 10,000 $3.15 $31,500 38,078 Direct +35.62% Acquired -4.1% (price as of 2026-08-20)
March 6, 2026 ALT P 5,000 $3.54 $17,700 28,078 Direct +21.67% Acquired -14.7% (price as of 2026-08-20)
March 13, 2025 ALT P 10,000 $5.20 $52,000 10,000 Direct — Acquired -41.9% (price as of 2026-08-20)
June 22, 2021 ATAI P 4,666 $15.00 $69,990 4,666 Direct — Acquired
March 23, 2018 ELOX P 4,500 $8.56 $38,520 4,500 Direct — Acquired 120.8% (price as of 2026-08-20)
Nov. 21, 2013 ATOS P 10,000 $2.58 $25,800 34,510 Direct +40.80% Acquired -100.0% (price as of 2026-08-20)
March 19, 2013 IMNN S 37,272 $1.06 $39,508 0 Direct -100.00% Disposed -100.0% (price as of 2026-08-20)
Dec. 6, 2011 IMNN P 5,000 $2.15 $10,750 28,636 Direct +21.15% Acquired -100.0% (price as of 2026-08-20)
May 26, 2011 IMNN P 8,636 $0.12 $1,036 8,636 Direct — Acquired -99.9% (price as of 2026-08-20)
May 26, 2011 IMNN P 8,636 $2.77 $23,922 23,636 Direct +57.57% Acquired -100.0% (price as of 2026-08-20)
Sept. 16, 2010 IMNN P 5,000 $3.10 $15,500 15,000 Direct +50.00% Acquired -100.0% (price as of 2026-08-20)
Feb. 23, 2007 IMNN P 10,000 $3.50 $35,000 10,000 Direct — Acquired -100.0% (price as of 2026-08-20)

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. 26, 2026 ALT Stock Options (option to buy) Common Stock, par value $0.0001 (259,000) $4.46 Feb. 26, 2036 259,000 Acquired
Feb. 26, 2026 ALT Restricted Stock Units Common Stock, par value $0.0001 (111,000) — — 111,000 Acquired
Nov. 11, 2025 ALT Restricted Stock Units Common Stock, par value $0.0001 (18,750) — — 18,750 Disposed
Oct. 1, 2025 ALT Restricted Stock Units Common Stock, par value $0.0001 (57,900) — — 57,900 Acquired
Oct. 1, 2025 ALT Stock Options (option to buy) Common Stock, par value $0.0001 (166,800) $3.87 Oct. 1, 2035 166,800 Acquired
Nov. 11, 2024 ALT Restricted Stock Units Common Stock, par value $0.0001 (75,000) — — 75,000 Acquired
Nov. 11, 2024 ALT Stock Options (option to buy) Common Stock, par value $0.0001 (225,000) $7.35 Nov. 11, 2034 225,000 Acquired
March 2, 2022 ATAI Stock Option Common Shares (228,000) $5.65 March 1, 2032 228,000 Acquired
June 17, 2021 ATAI Stock Option Common Shares (67,726) $15.00 June 17, 2031 67,726 Acquired
March 15, 2020 ELOX Restricted Stock Units Common Stock (3,750) — — 3,750 Disposed
Jan. 30, 2020 ELOX Restricted Stock Units Common Stock (5,000) — — 5,000 Disposed
Jan. 30, 2020 ELOX Restricted Stock Units Common Stock (5,000) — — 5,000 Acquired
Jan. 30, 2019 ELOX Restricted Stock Units Common Stock (20,000) — — 20,000 Acquired
Jan. 30, 2019 ELOX Stock Options Common Stock (60,000) $11.53 Jan. 30, 2029 60,000 Acquired
Dec. 20, 2017 ELOX Employee Stock Option (Right to Buy) Common Stock (399,266) — Dec. 19, 2027 399,266 Acquired
Dec. 20, 2017 ELOX Stock Option (Right to Buy) Common Stock (399,266) $7.00 Dec. 20, 2027 399,266 Acquired
May 18, 2016 ATOS Stock Option (right to buy) Common Stock (112,190) $0.26 May 18, 2026 112,190 Acquired
May 12, 2015 ATOS Stock Option (right to buy) Common Stock (40,000) $1.37 May 12, 2025 40,000 Acquired
May 6, 2014 ATOS Stock Option (right to buy) Common Stock (15,000) $1.22 May 6, 2024 15,000 Acquired
Oct. 10, 2013 ATOS Stock Option (right to buy) Common Stock (57,190) $2.04 Oct. 10, 2023 57,190 Acquired
Dec. 18, 2012 IMNN Warrants to purchase Celsion Corporation Common Stock Celsion Corporation Common Stock — Nov. 25, 2017 8,636 Disposed
June 15, 2012 IMNN Option to purchase Celsion Corporation Common Stock Celsion Corporation Common Stock (36,250) $2.15 June 15, 2022 36,250 Acquired
Feb. 27, 2012 IMNN Option to purchase Celsion Corporation Common Stock Celsion Corporation Common Stock (13,750) $2.09 Feb. 27, 2022 13,750 Acquired
July 8, 2011 IMNN Options to Purchase Celsion Corporation Common Stock Celsion Corporation Common Stock (75,000) $3.46 July 8, 2021 75,000 Acquired
May 26, 2011 IMNN Warrants to purchase Common Stock [F1] Celsion Corporation Common Stock (8,636) $2.77 May 26, 2017 8,636 Acquired
Feb. 25, 2011 IMNN Option to purchase common stock Celsion Corporation Common Stock (50,000) $2.49 Feb. 25, 2021 50,000 Acquired
Feb. 19, 2010 IMNN Common Stock Option Celsion Common Stock (25,000) $2.94 Feb. 19, 2020 25,000 Acquired
Jan. 19, 2009 IMNN Common Stock Options Common Stock Options (8,334) $2.72 Jan. 19, 2019 8,334 Acquired
Jan. 19, 2009 IMNN Common Stock Options Common Stock Options (8,333) $2.72 Oct. 19, 2019 8,333 Acquired
Jan. 19, 2009 IMNN Common Stock Options Common Stock Options (8,333) $2.72 Jan. 19, 2019 8,333 Acquired
March 15, 2008 IMNN Common Stock Options Common Stock (8,334) $5.47 March 15, 2018 8,334 Acquired
March 15, 2008 IMNN Common Stock Options Common Stock (8,333) $5.47 March 15, 2018 8,333 Acquired
March 15, 2008 IMNN Common Stock Options Common Stock (8,333) $5.47 March 15, 2018 8,333 Acquired
March 22, 2007 IMNN Stock Options Common Stock (25,000) $4.16 March 22, 2017 25,000 Acquired
March 15, 2006 IMNN Stock Options Common Stock (3,676) $4.08 March 15, 2016 3,676 Acquired
Aug. 12, 2005 IMNN Stock Option Common Stock (50,000) $0.38 June 23, 2017 50,000 Acquired

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

Initial ownership (Form 3) 1 holding

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

Date Ticker Security Shares Ownership
June 17, 2021 ATAI Stock Option→ Common Shares (880,000) 880,000 Direct

Compensation (DEF 14A)

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

IMNN

Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2013 $150,578 — — — — — $50,193 $200,771
2012 $289,233 — — $74,313 $71,485 — $8,700 $443,731
2011 $138,115 — — $269,750 $47,000 — $126,428 $581,293

ELOX

CFO
Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2017 $2,836 — — $1,569,084 — — $19 $1,571,939

ATOS

Fiscal year Salary Bonus Stock awards Option awards Non-equity incentive Pension change Other Total
2023 $197,756 $43,493 — — — — $21,783 $2,379,426

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