David Charles Lubner

CIK 1572000 · View on SEC EDGAR ↗

Insider

First SEC filing: June 9, 2026 · Latest: June 9, 2026

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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.

Insider at

Insider transactions

1 buys (P) 0 sells (S) Net: $999,990 + 22 non-open-market transactions below Avg return of open purchases vs now: 56.9% 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

22 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
Aug. 7, 2026	BRVE	P	55,555	$18.00	$999,990	55,555 Direct	—	Acquired	56.9% (price as of 2026-08-20)
Aug. 5, 2026	BRVE	A	60,000	—	—	60,000 Direct	—	Acquired	(price as of 2026-08-20)
June 5, 2026	DYN	A	35,152	—	—	35,152 Direct	—	Acquired	(price as of 2026-08-20)
June 2, 2026	CBIO	A	11,050	—	—	11,050 Direct	—	Acquired	(price as of 2026-08-20)
April 24, 2026	DYN	G	53,625	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
June 23, 2025	CBIO	A	9,023	—	—	9,023 Direct	—	Acquired	(price as of 2026-08-20)
May 30, 2025	DYN	A	35,000	—	—	35,000 Direct	—	Acquired	(price as of 2026-08-20)
May 22, 2024	DYN	A	25,133	—	—	25,133 Direct	—	Acquired	(price as of 2026-08-20)
May 26, 2023	VOR	A	30,000	—	—	30,000 Direct	—	Acquired	(price as of 2026-08-20)
May 24, 2023	DYN	A	24,900	—	—	24,900 Direct	—	Acquired	(price as of 2026-08-20)
July 5, 2022	DYN	A	7,222	—	—	7,222 Direct	—	Acquired	(price as of 2026-08-20)
June 14, 2022	VOR	A	16,911	—	—	16,911 Direct	—	Acquired	(price as of 2026-08-20)
June 3, 2022	DYN	A	19,596	—	—	19,596 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 4, 2021	IRON	A	0	—	—	0 Direct	—	Acquired	(price as of 2026-08-20)
Oct. 4, 2021	IRON	A	17,245	—	—	17,245 Direct	—	Acquired	(price as of 2026-08-20)
May 26, 2021	DYN	A	19,596	—	—	19,596 Direct	—	Acquired	(price as of 2026-08-20)
March 12, 2021	IRON	A	17,529	—	—	17,529 Direct	—	Acquired	(price as of 2026-08-20)
March 12, 2021	IRON	A	25,000	—	—	25,000 Direct	—	Acquired	(price as of 2026-08-20)
Feb. 5, 2021	VOR	A	16,900	—	—	16,900 Direct	—	Acquired	(price as of 2026-08-20)
Sept. 21, 2020	DYN	C	177,872	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
Sept. 21, 2020	DYN	C	53,625	—	—	53,625 Direct	—	Acquired	(price as of 2026-08-20)
Aug. 7, 2020	DYN	P	177,872	$2.81	$499,820	177,872 Direct	—	Acquired	826.0% (price as of 2026-08-20)
July 31, 2020	DYN	A	14,444	—	—	14,444 Direct	—	Acquired	(price as of 2026-08-20)
July 31, 2020	DYN	A	11,156	—	—	11,156 Direct	—	Acquired	(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
Aug. 5, 2026	BRVE	Stock Option (Right to Buy)	Common Stock (60,000)	$18.00	Aug. 4, 2036	60,000	Acquired
June 5, 2026	DYN	Stock option (right to buy)	Common Stock (35,152)	$17.04	June 4, 2036	35,152	Acquired
June 2, 2026	CBIO	Stock Option (Right to Buy)	Ordinary Shares (11,050)	$17.01	June 2, 2036	11,050	Acquired
June 23, 2025	CBIO	Stock Option (Right to Buy)	Ordinary Shares (9,023)	$15.30	June 23, 2035	9,023	Acquired
May 30, 2025	DYN	Stock option (right to buy)	Common Stock (35,000)	$11.96	May 29, 2035	35,000	Acquired
May 22, 2024	DYN	Stock option (right to buy)	Common Stock (25,133)	$31.53	May 21, 2034	25,133	Acquired
May 26, 2023	VOR	Stock Option (right to buy)	Common Stock (30,000)	$4.79	May 25, 2033	30,000	Acquired
May 24, 2023	DYN	Stock Option (right to buy)	Common Stock (24,900)	$13.49	May 23, 2033	24,900	Acquired
July 5, 2022	DYN	Stock Option (right to buy)	Common Stock (7,222)	$5.54	July 30, 2030	7,222	Acquired
June 14, 2022	VOR	Stock Option (right to buy)	Common Stock (16,911)	$4.26	June 13, 2032	16,911	Acquired
June 3, 2022	DYN	Stock Option (right to buy)	Common Stock (19,596)	$4.58	June 2, 2032	19,596	Acquired
Oct. 4, 2021	IRON	Stock Option (Right to Buy)	Common Stock (0)	—	—	0	Acquired
Oct. 4, 2021	IRON	Stock Option (Right to Buy)	Common Stock (17,245)	$3.80	Oct. 3, 2031	17,245	Acquired
May 26, 2021	DYN	Stock Option (right to buy)	Common Stock (19,596)	$19.56	May 25, 2031	19,596	Acquired
March 12, 2021	IRON	Stock Option (Right to Buy)	Common Stock (17,529)	$17.00	March 11, 2031	17,529	Acquired
March 12, 2021	IRON	Stock Option (Right to Buy)	Common Stock (25,000)	$17.00	March 11, 2031	25,000	Acquired
Feb. 5, 2021	VOR	Stock Option (right to buy)	Common Stock (16,900)	$18.00	Feb. 4, 2031	16,900	Acquired
Sept. 21, 2020	DYN	Series B Preferred Stock	Common Stock (53,625)	—	—	177,872	Disposed
Aug. 7, 2020	DYN	Series B Preferred Stock	Common Stock (53,625)	—	—	177,872	Acquired
July 31, 2020	DYN	Stock Option (right to buy)	Common Stock (14,444)	$5.54	July 30, 2030	14,444	Acquired
July 31, 2020	DYN	Stock Option (right to buy)	Common Stock (11,156)	$5.54	July 30, 2030	11,156	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
June 23, 2025	CBIO	Stock Option (Right to Buy)→ Ordinary Shares (20,164)	20,164	Direct
Feb. 10, 2021	IRON	Stock Option (Right to Buy)→ Common Stock (50,338)	50,338	Direct
Feb. 4, 2021	VOR	Stock Option (right to buy)→ Common Stock (29,432)	29,432	Direct
Feb. 4, 2021	VOR	Stock Option (right to buy)→ Common Stock (11,764)	11,764	Direct
Sept. 16, 2020	DYN	Stock Option (right to buy)→ Common Stock (32,808)	32,808	Direct
Sept. 16, 2020	DYN	Stock Option (right to buy)→ Common Stock (11,156)	11,156	Direct
Sept. 16, 2020	DYN	Stock Option (right to buy)→ Common Stock (14,444)	14,444	Direct
Sept. 16, 2020	DYN	Series B Preferred Stock→ Common Stock (53,625)	53,625	Direct