Ivan Tchakarov

Insider

First SEC filing: July 29, 2026 · Latest: July 31, 2026

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Insider at

0 buys (P) 0 sells (S) Net: $0 + 5 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

No open-market trades on record; showing all filings.

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
July 31, 2026	REF	D	11,765	$13.95	$164,122	0 Direct	-100.00%	Disposed	8.3% (price as of 2026-08-19)
July 31, 2026	REF	D	37,396	$13.95	$521,674	515,590 Direct	-6.76%	Disposed	8.3% (price as of 2026-08-19)
July 29, 2026	REF	A	58,831	—	—	58,831 Direct	—	Acquired	(price as of 2026-08-19)
July 29, 2026	REF	A	33,333	—	—	186,835 Direct	+21.72%	Acquired	(price as of 2026-08-19)
July 29, 2026	REF	A	133,333	—	—	153,502 Direct	+661.08%	Acquired	(price as of 2026-08-19)

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.

Options, RSUs and convertible securities reported on Form 4 Table II.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
July 31, 2026	REF	Stock Option (right to buy)	Common Stock (11,765)	$6.41	June 21, 2036	11,765	Disposed
July 31, 2026	REF	Stock Option (right to buy)	Common Stock (37,396)	$8.04	May 1, 2034	37,396	Disposed
July 29, 2026	REF	Stock Option (right to buy)	Common Stock (58,831)	$15.00	July 29, 2036	58,831	Acquired

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

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

Date	Ticker	Security	Shares	Ownership
July 29, 2026	REF	Common Stock	20,169	Direct
July 29, 2026	REF	Stock Option (right to buy)→ Common Stock (552,986)	552,986	Direct
July 29, 2026	REF	Stock Option (right to buy)→ Common Stock (11,765)	11,765	Direct