Gosse B Bruinsma
CIK 1250856 · View on SEC EDGAR ↗
First SEC filing: April 26, 2004 · Latest: April 26, 2004
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
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.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Oct. 12, 2004 | GTBP | A | 100,000 | $0.59 | $59,000 | 135,000 Direct | +285.71% | Acquired | -99.9% (price as of 2026-08-21) |
| April 26, 2004 | GTBP | A | 30,000 | $0.69 | $20,700 | 30,000 Direct | -50.00% | Disposed | -99.9% (price as of 2026-08-21) |
| April 26, 2004 | GTBP | A | 30,000 | $0.69 | $20,700 | 30,000 Direct | — | Acquired | -99.9% (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 |
|---|---|---|---|---|---|---|---|
| Oct. 12, 2004 | GTBP | stock option (right to buy) | common stock (100,000) | $0.59 | Oct. 12, 2014 | 100,000 | Acquired |
| April 26, 2004 | GTBP | Common Stock | Common Stock (30,000) | $0.69 | April 25, 2014 | 30,000 | Disposed |
| April 26, 2004 | GTBP | Common Stock | Common Stock (30,000) | $0.69 | April 25, 2014 | 30,000 | 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 |
|---|---|---|---|---|
| April 26, 2004 | GTBP | Common Stock | 13,982,567 | Indirect |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
GTBP
CEO| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2004 | $2,004 | — | — | — | — | — | — | — |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.