Marianna Mancini

Insider

First SEC filing: Jan. 6, 2021 · Latest: Jan. 6, 2021

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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

VKTX selling July 29, 2026

Insider transactions

0 buys (P) 6 sells (S) Net: $-2,727,473 + 80 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

80 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
July 29, 2026	VKTX	S	18,217	$33.47	$609,723	422,760 Direct	-4.13%	Disposed	3.3% (price as of 2026-08-20)
July 28, 2026	VKTX	A	31,667	—	—	440,977 Direct	+7.74%	Acquired	(price as of 2026-08-20)
Jan. 5, 2026	VKTX	S	1,600	$35.07	$56,112	409,190 Direct	-0.39%	Disposed	-1.4% (price as of 2026-08-20)
Jan. 5, 2026	VKTX	S	10,500	$34.22	$359,310	410,790 Direct	-2.49%	Disposed	1.0% (price as of 2026-08-20)
Jan. 5, 2026	VKTX	S	13,600	$33.37	$453,832	421,290 Direct	-3.13%	Disposed	3.6% (price as of 2026-08-20)
Jan. 5, 2026	VKTX	S	31,961	$32.29	$1,032,021	434,890 Direct	-6.85%	Disposed	7.1% (price as of 2026-08-20)
Jan. 2, 2026	VKTX	A	91,000	—	—	91,000 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 2, 2026	VKTX	A	32,049	—	—	466,851 Direct	+7.37%	Acquired	(price as of 2026-08-20)
Jan. 2, 2026	VKTX	A	41,000	—	—	434,802 Direct	+10.41%	Acquired	(price as of 2026-08-20)
Oct. 28, 2025	VKTX	S	6,185	$35.00	$216,475	382,467 Direct	-1.59%	Disposed	-1.2% (price as of 2026-08-20)
Oct. 27, 2025	VKTX	A	11,117	—	—	388,652 Direct	+2.94%	Acquired	(price as of 2026-08-20)
July 3, 2025	VKTX	S	4,266	$27.77	$118,467	377,535 Direct	-1.12%	Disposed	24.5% (price as of 2026-08-20)
July 2, 2025	VKTX	A	7,667	—	—	381,801 Direct	+2.05%	Acquired	(price as of 2026-08-20)
Jan. 6, 2025	VKTX	S	5,100	$43.32	$220,932	374,134 Direct	-1.34%	Disposed	-20.2% (price as of 2026-08-20)
Jan. 6, 2025	VKTX	S	49,115	$42.69	$2,096,719	379,234 Direct	-11.47%	Disposed	-19.0% (price as of 2026-08-20)
Jan. 3, 2025	VKTX	A	37,200	—	—	37,200 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 3, 2025	VKTX	A	21,667	—	—	428,349 Direct	+5.33%	Acquired	(price as of 2026-08-20)
Jan. 3, 2025	VKTX	A	44,533	—	—	406,682 Direct	+12.30%	Acquired	(price as of 2026-08-20)
July 30, 2024	VKTX	S	3,322	$57.82	$192,078	362,149 Direct	-0.91%	Disposed	-40.2% (price as of 2026-08-20)
July 30, 2024	VKTX	S	14,704	$56.98	$837,834	365,471 Direct	-3.87%	Disposed	-39.3% (price as of 2026-08-20)
July 29, 2024	VKTX	A	21,667	—	—	380,175 Direct	+6.04%	Acquired	(price as of 2026-08-20)
July 29, 2024	VKTX	A	10,000	—	—	358,508 Direct	+2.87%	Acquired	(price as of 2026-08-20)
May 1, 2024	VKTX	M 10b5-1	51,000	—	—	153,000 Direct	-25.00%	Disposed	(price as of 2026-08-20)
May 1, 2024	VKTX	M 10b5-1	35,426	—	—	18,574 Direct	-65.60%	Disposed	(price as of 2026-08-20)
May 1, 2024	VKTX	M 10b5-1	90,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
May 1, 2024	VKTX	M 10b5-1	87,000	—	—	87,000 Direct	-50.00%	Disposed	(price as of 2026-08-20)
May 1, 2024	VKTX	M 10b5-1	17,999	—	—	1 Direct	-99.99%	Disposed	(price as of 2026-08-20)
May 1, 2024	VKTX	S 10b5-1	6,248	$80.08	$500,340	348,508 Direct	-1.76%	Disposed	-56.8% (price as of 2026-08-20)
May 1, 2024	VKTX	S 10b5-1	119,946	$79.29	$9,510,518	354,756 Direct	-25.27%	Disposed	-56.4% (price as of 2026-08-20)
May 1, 2024	VKTX	S 10b5-1	105,343	$78.65	$8,285,227	474,702 Direct	-18.16%	Disposed	-56.0% (price as of 2026-08-20)
May 1, 2024	VKTX	S 10b5-1	26,142	$77.49	$2,025,744	580,045 Direct	-4.31%	Disposed	-55.4% (price as of 2026-08-20)
May 1, 2024	VKTX	S 10b5-1	23,746	$76.40	$1,814,194	606,187 Direct	-3.77%	Disposed	-54.8% (price as of 2026-08-20)
May 1, 2024	VKTX	M 10b5-1	51,000	$8.52	$434,520	629,933 Direct	+8.81%	Acquired	305.7% (price as of 2026-08-20)
May 1, 2024	VKTX	M 10b5-1	35,426	$7.77	$275,260	578,933 Direct	+6.52%	Acquired	344.9% (price as of 2026-08-20)
May 1, 2024	VKTX	M 10b5-1	90,000	$5.80	$522,000	543,507 Direct	+19.85%	Acquired	496.0% (price as of 2026-08-20)
May 1, 2024	VKTX	M 10b5-1	87,000	$4.88	$424,560	453,507 Direct	+23.74%	Acquired	608.4% (price as of 2026-08-20)
May 1, 2024	VKTX	M 10b5-1	17,999	$4.68	$84,235	366,507 Direct	+5.16%	Acquired	638.6% (price as of 2026-08-20)
March 27, 2024	VKTX	F	16,610	$83.34	$1,384,277	363,565 Direct	-4.37%	Disposed	-58.5% (price as of 2026-08-20)
March 27, 2024	VKTX	A	31,667	—	—	380,175 Direct	+9.09%	Acquired	(price as of 2026-08-20)
March 1, 2024	VKTX	F	16,958	$85.22	$1,445,161	348,508 Direct	-4.64%	Disposed	-59.4% (price as of 2026-08-20)
March 1, 2024	VKTX	A	31,667	—	—	365,466 Direct	+9.49%	Acquired	(price as of 2026-08-20)
Jan. 4, 2024	VKTX	F	14,199	$18.58	$263,817	333,799 Direct	-4.08%	Disposed	86.0% (price as of 2026-08-20)
Jan. 3, 2024	VKTX	A	155,000	—	—	155,000 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 3, 2024	VKTX	F	32,677	$17.40	$568,580	347,998 Direct	-8.58%	Disposed	98.7% (price as of 2026-08-20)
Jan. 3, 2024	VKTX	A	70,000	—	—	380,675 Direct	+22.53%	Acquired	(price as of 2026-08-20)
Jan. 3, 2024	VKTX	F	16,533	$17.40	$287,674	310,675 Direct	-5.05%	Disposed	98.7% (price as of 2026-08-20)
Jan. 3, 2024	VKTX	A	28,334	—	—	327,208 Direct	+9.48%	Acquired	(price as of 2026-08-20)
April 17, 2023	VKTX	M 10b5-1	12,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
April 17, 2023	VKTX	S 10b5-1	12,500	$20.00	$250,000	287,763 Direct	-4.16%	Disposed	72.8% (price as of 2026-08-20)
April 17, 2023	VKTX	M 10b5-1	12,500	$13.07	$163,375	300,263 Direct	+4.34%	Acquired	164.5% (price as of 2026-08-20)
March 30, 2023	VKTX	M 10b5-1	3,000	—	—	1,000 Direct	-75.00%	Disposed	(price as of 2026-08-20)
March 30, 2023	VKTX	M 10b5-1	10,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 30, 2023	VKTX	M 10b5-1	23,100	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 30, 2023	VKTX	F	30,799	$17.57	$541,138	287,763 Direct	-9.67%	Disposed	96.7% (price as of 2026-08-20)
March 30, 2023	VKTX	A	56,667	—	—	318,562 Direct	+21.64%	Acquired	(price as of 2026-08-20)
March 30, 2023	VKTX	M 10b5-1	36,100	$17.01	$614,061	261,895 Direct	-12.11%	Disposed	103.2% (price as of 2026-08-20)
March 30, 2023	VKTX	M 10b5-1	3,000	$6.47	$19,410	297,995 Direct	+1.02%	Acquired	434.3% (price as of 2026-08-20)
March 30, 2023	VKTX	M 10b5-1	10,000	$7.69	$76,900	294,995 Direct	+3.51%	Acquired	349.5% (price as of 2026-08-20)
March 30, 2023	VKTX	M 10b5-1	23,100	$8.52	$196,812	284,995 Direct	+8.82%	Acquired	305.7% (price as of 2026-08-20)
March 29, 2023	VKTX	M 10b5-1	15,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 29, 2023	VKTX	S 10b5-1	41,242	$16.00	$659,872	261,895 Direct	-13.61%	Disposed	116.0% (price as of 2026-08-20)
March 29, 2023	VKTX	M 10b5-1	15,000	$9.13	$136,950	303,137 Direct	+5.21%	Acquired	278.6% (price as of 2026-08-20)
March 28, 2023	VKTX	M 10b5-1	30,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 28, 2023	VKTX	M 10b5-1	24,500	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 28, 2023	VKTX	M 10b5-1	10,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 28, 2023	VKTX	M 10b5-1	15,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 28, 2023	VKTX	M 10b5-1	53,054	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 28, 2023	VKTX	M 10b5-1	15,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 28, 2023	VKTX	M 10b5-1	4,873	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 28, 2023	VKTX	M 10b5-1	15,000	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
March 28, 2023	VKTX	S 10b5-1	196,563	$15.00	$2,948,445	288,137 Direct	-40.55%	Disposed	130.5% (price as of 2026-08-20)
March 28, 2023	VKTX	M 10b5-1	30,000	$4.37	$131,100	484,700 Direct	+6.60%	Acquired	691.0% (price as of 2026-08-20)
March 28, 2023	VKTX	M 10b5-1	24,500	$4.65	$113,925	454,700 Direct	+5.70%	Acquired	643.4% (price as of 2026-08-20)
March 28, 2023	VKTX	M 10b5-1	10,000	$1.04	$10,400	430,200 Direct	+2.38%	Acquired	3223.8% (price as of 2026-08-20)
March 28, 2023	VKTX	M 10b5-1	15,000	$1.08	$16,200	420,200 Direct	+3.70%	Acquired	3100.7% (price as of 2026-08-20)
March 28, 2023	VKTX	M 10b5-1	53,054	$1.23	$65,256	405,200 Direct	+15.07%	Acquired	2710.4% (price as of 2026-08-20)
March 28, 2023	VKTX	M 10b5-1	15,000	$1.26	$18,900	352,146 Direct	+4.45%	Acquired	2643.5% (price as of 2026-08-20)
March 28, 2023	VKTX	M 10b5-1	4,873	$1.88	$9,161	337,146 Direct	+1.47%	Acquired	1738.7% (price as of 2026-08-20)
March 28, 2023	VKTX	M 10b5-1	15,000	$2.15	$32,250	332,273 Direct	+4.73%	Acquired	1507.8% (price as of 2026-08-20)
Jan. 15, 2023	VKTX	F	1,079	$8.95	$9,657	317,273 Direct	-0.34%	Disposed	286.2% (price as of 2026-08-20)
Jan. 4, 2023	VKTX	F	13,994	$8.42	$117,829	318,352 Direct	-4.21%	Disposed	310.5% (price as of 2026-08-20)
Jan. 3, 2023	VKTX	A	204,000	—	—	204,000 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 3, 2023	VKTX	F	18,854	$8.52	$160,636	332,346 Direct	-5.37%	Disposed	305.7% (price as of 2026-08-20)
Jan. 3, 2023	VKTX	A	90,667	—	—	351,200 Direct	+34.80%	Acquired	(price as of 2026-08-20)
Dec. 30, 2022	VKTX	F	12,773	$9.40	$120,066	260,533 Direct	-4.67%	Disposed	267.7% (price as of 2026-08-20)
Dec. 30, 2022	VKTX	A	23,500	—	—	273,306 Direct	+9.41%	Acquired	(price as of 2026-08-20)
Jan. 15, 2022	VKTX	F	827	$4.24	$3,506	238,695 Direct	-0.35%	Disposed	715.3% (price as of 2026-08-20)
Jan. 4, 2022	VKTX	F	11,845	$4.62	$54,724	239,522 Direct	-4.71%	Disposed	648.2% (price as of 2026-08-20)
Jan. 3, 2022	VKTX	A	174,000	—	—	174,000 Direct	—	Acquired	(price as of 2026-08-20)
Jan. 3, 2022	VKTX	A	77,333	—	—	251,367 Direct	+44.44%	Acquired	(price as of 2026-08-20)
Jan. 3, 2022	VKTX	F	3,919	$4.88	$19,125	174,034 Direct	-2.20%	Disposed	608.4% (price as of 2026-08-20)
Sept. 28, 2021	VKTX	F	2,839	$6.50	$18,454	177,535 Direct	-1.57%	Disposed	431.8% (price as of 2026-08-20)
Sept. 28, 2021	VKTX	A	6,667	—	—	180,374 Direct	+3.84%	Acquired	(price as of 2026-08-20)
Jan. 19, 2021	VKTX	F	994	$6.68	$6,640	169,952 Direct	-0.58%	Disposed	417.5% (price as of 2026-08-20)
Jan. 15, 2021	VKTX	F	686	$6.48	$4,445	170,946 Direct	-0.40%	Disposed	433.5% (price as of 2026-08-20)
Jan. 4, 2021	VKTX	A	73,000	—	—	167,655 Direct	+77.12%	Acquired	(price as of 2026-08-20)
Jan. 4, 2021	VKTX	A	6,750	—	—	174,405 Direct	+4.03%	Acquired	(price as of 2026-08-20)
Jan. 4, 2021	VKTX	F	2,773	$5.80	$16,083	171,632 Direct	-1.59%	Disposed	496.0% (price as of 2026-08-20)
Jan. 4, 2021	VKTX	A	90,000	—	—	90,000 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
Jan. 2, 2026	VKTX	Stock Option (Right to Buy)	Common Stock (91,000)	$35.42	Jan. 2, 2036	91,000	Acquired
Jan. 3, 2025	VKTX	Stock Option (Right to Buy)	Common Stock (37,200)	$42.89	Jan. 3, 2035	37,200	Acquired
May 1, 2024	VKTX	Stock Option (Right to Buy)	Common Stock (51,000)	$8.52	Jan. 3, 2033	51,000	Disposed
May 1, 2024	VKTX	Stock Option (Right to Buy)	Common Stock (35,426)	$7.77	Jan. 3, 2030	35,426	Disposed
May 1, 2024	VKTX	Stock Option (Right to Buy)	Common Stock (90,000)	$5.80	Jan. 4, 2031	90,000	Disposed
May 1, 2024	VKTX	Stock Option (Right to Buy)	Common Stock (87,000)	$4.88	Jan. 3, 2032	87,000	Disposed
May 1, 2024	VKTX	Stock Option (Right to Buy)	Common Stock (17,999)	$4.68	March 31, 2030	17,999	Disposed
Jan. 3, 2024	VKTX	Stock Option (Right to Buy)	Common Stock (155,000)	$17.40	Jan. 3, 2034	155,000	Acquired
April 17, 2023	VKTX	Stock Option (Right to Buy)	Common Stock (12,500)	$13.07	Aug. 31, 2018	12,500	Disposed
March 30, 2023	VKTX	Stock Option (right to buy)	Common Stock (3,000)	$6.47	Oct. 31, 2029	3,000	Disposed
March 30, 2023	VKTX	Stock Option (right to buy)	Common Stock (10,000)	$7.69	July 31, 2029	10,000	Disposed
March 30, 2023	VKTX	Stock Option (right to buy)	Common Stock (23,100)	$8.52	Jan. 15, 2029	23,100	Disposed
March 29, 2023	VKTX	Stock Option (right to buy)	Common Stock (15,000)	$9.13	May 21, 2025	15,000	Disposed
March 28, 2023	VKTX	Stock Option (right to buy)	Common Stock (30,000)	$4.37	March 30, 2028	30,000	Disposed
March 28, 2023	VKTX	Stock Option (right to buy)	Common Stock (24,500)	$4.65	Jan. 19, 2028	24,500	Disposed
March 28, 2023	VKTX	Stock Option (right to buy)	Common Stock (10,000)	$1.04	Aug. 31, 2027	10,000	Disposed
March 28, 2023	VKTX	Stock Option (right to buy)	Common Stock (15,000)	$1.08	June 30, 2027	15,000	Disposed
March 28, 2023	VKTX	Stock Option (right to buy)	Common Stock (53,054)	$1.23	Jan. 5, 2027	53,054	Disposed
March 28, 2023	VKTX	Stock Option (right to buy)	Common Stock (15,000)	$1.26	June 30, 2026	15,000	Disposed
March 28, 2023	VKTX	Stock Option (right to buy)	Common Stock (4,873)	$1.88	March 14, 2026	4,873	Disposed
March 28, 2023	VKTX	Stock Option (right to buy)	Common Stock (15,000)	$2.15	March 4, 2026	15,000	Disposed
Jan. 3, 2023	VKTX	Stock Option (Right to Buy)	Common Stock (204,000)	$8.52	Jan. 3, 2033	204,000	Acquired
Jan. 3, 2022	VKTX	Stock Option (Right to Buy)	Common Stock (174,000)	$4.88	Jan. 3, 2032	174,000	Acquired
Jan. 4, 2021	VKTX	Stock Option (Right to Buy)	Common Stock (90,000)	$5.80	Jan. 4, 2031	90,000	Acquired

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

Initial ownership (Form 3) 17 holdings

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

Date	Ticker	Security	Shares	Ownership
Jan. 6, 2021	VKTX	Common Stock, par value $0.00001 per share	94,655	Direct
Jan. 6, 2021	VKTX	Stock Option (Right to Buy)→ Common Stock (18,000)	18,000	Direct
Jan. 6, 2021	VKTX	Stock Option (Right to Buy)→ Common Stock (54,000)	54,000	Direct
Jan. 6, 2021	VKTX	Stock Option (Right to Buy)→ Common Stock (4,000)	4,000	Direct
Jan. 6, 2021	VKTX	Stock Option (Right to Buy)→ Common Stock (10,000)	10,000	Direct
Jan. 6, 2021	VKTX	Stock Option (Right to Buy)→ Common Stock (23,100)	23,100	Direct
Jan. 6, 2021	VKTX	Stock Option (Right to Buy)→ Common Stock (12,500)	12,500	Direct
Jan. 6, 2021	VKTX	Stock Option (Right to Buy)→ Common Stock (30,000)	30,000	Direct
Jan. 6, 2021	VKTX	Stock Option (Right to Buy)→ Common Stock (24,500)	24,500	Direct
Jan. 6, 2021	VKTX	Stock Option (Right to Buy)→ Common Stock (10,000)	10,000	Direct
Jan. 6, 2021	VKTX	Stock Option (Right to Buy)→ Common Stock (15,000)	15,000	Direct
Jan. 6, 2021	VKTX	Stock Option (Right to Buy)→ Common Stock (23,054)	23,054	Direct
Jan. 6, 2021	VKTX	Stock Option (Right to Buy)→ Common Stock (30,000)	30,000	Direct
Jan. 6, 2021	VKTX	Stock Option (Right to Buy)→ Common Stock (15,000)	15,000	Direct
Jan. 6, 2021	VKTX	Stock Option (Right to Buy)→ Common Stock (4,873)	4,873	Direct
Jan. 6, 2021	VKTX	Stock Option (Right to Buy)→ Common Stock (15,000)	15,000	Direct
Jan. 6, 2021	VKTX	Stock Option (Right to Buy)→ Common Stock (15,000)	15,000	Direct